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Schwarzschild radius

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4087: 4917: 4927: 1781:, supermassive black holes have comparatively low average densities. (Note that a (non-rotating) black hole is a spherical region in space that surrounds the singularity at its center; it is not the singularity itself.) With that in mind, the average density of a supermassive black hole can be less than the density of water. 2524: 3493:
Peterson, Bradley M.; Bentz, Misty C.; Desroches, Louis-Benoit; Filippenko, Alexei V.; Ho, Luis C.; Kaspi, Shai; Laor, Ari; Maoz, Dan; Moran, Edward C.; Pogge, Richard W.; Quillen, Alice C. (20 October 2005). "Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. I. A Reverberation-Based
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Black holes can be classified based on their Schwarzschild radius, or equivalently, by their density, where density is defined as mass of a black hole divided by the volume of its Schwarzschild sphere. As the Schwarzschild radius is linearly related to mass, while the enclosed volume corresponds to
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The Schwarzschild radius of a body is proportional to its mass and therefore to its volume, assuming that the body has a constant mass-density. In contrast, the physical radius of the body is proportional to the cube root of its volume. Therefore, as the body accumulates matter at a given fixed
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It is thought that supermassive black holes like these do not form immediately from the singular collapse of a cluster of stars. Instead they may begin life as smaller, stellar-sized black holes and grow larger by the accretion of matter, or even of other black holes.
1766:(SMBH) is the largest type of black hole, though there are few official criteria on how such an object is considered so, on the order of hundreds of thousands to billions of solar masses. (Supermassive black holes up to 21 billion (2.1 × 10)  2340: 1881:. Its average density at that size would be so high that no known mechanism could form such extremely compact objects. Such black holes might possibly be formed in an early stage of the evolution of the universe, just after the 1748:
the third power of the radius, small black holes are therefore much more dense than large ones. The volume enclosed in the event horizon of the most massive black holes has an average density lower than main sequence stars.
2108: 2726: 1789:, the density of water), its Schwarzschild radius will increase more quickly than its physical radius. When a body of this density has grown to around 136 million solar masses (1.36 × 10  2651:
The Schwarzschild radius equation can be manipulated to yield an expression that gives the largest possible radius from an input density that doesn't form a black hole. Taking the input density as
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Bender, Ralf; Kormendy, John; Bower, Gary; et al. (2005). "HST STIS Spectroscopy of the Triple Nucleus of M31: Two Nested Disks in Keplerian Rotation around a Supermassive Black Hole".
636: 276: 693: 2575: 2327: 2022: 2281: 224: 548: 2897: 2236: 407: 339: 366: 2519:{\displaystyle r_{s}={\frac {2GM}{c^{2}}}={\frac {2G}{c^{3}}}Mc={\frac {2G}{c^{3}}}P_{0}\Rightarrow {\frac {2G}{c^{3}}}{\frac {\hbar }{2r}}={\frac {\ell _{P}^{2}}{r}}.} 2195: 3642:
Abbott, R.; Abbott, T. D.; Abraham, S.; Acernese, F.; Ackley, K.; Adams, C.; Adhikari, R. X.; Adya, V. B.; Affeldt, C.; Agathos, M.; Agatsuma, K. (2 September 2020).
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Ghez, A. M.; et al. (December 2008). "Measuring Distance and Properties of the Milky Way's Central Supermassive Black Hole with Stellar Orbits".
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obtained the exact solution to Einstein's field equations for the gravitational field outside a non-rotating, spherically symmetric body with mass
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operates slightly differently). Neither light nor particles can escape through this surface from the region inside, hence the name "black hole".
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If Mount Everest is assumed* to be a cone of height 8850 m and radius 5000 m, then its volume can be calculated using the following equation:
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This expression had previously been calculated, using Newtonian mechanics, as the radius of a spherically symmetric body at which the
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is a coordinate singularity, meaning that it is an artifact of the particular system of coordinates that was used; while the one at
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McConnell, Nicholas J. (8 December 2011). "Two ten-billion-solar-mass black holes at the centres of giant elliptical galaxies".
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near a large, slowly rotating, nearly spherical body, such as the Earth or Sun can be reasonably approximated as follows:
4345: 1796:), its physical radius would be overtaken by its Schwarzschild radius, and thus it would form a supermassive black hole. 439:
and cannot be removed. The Schwarzschild radius is nonetheless a physically relevant quantity, as noted above and below.
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is the elapsed time for an observer distant from the massive object (and therefore outside of the gravitational field);
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is the radial coordinate of the observer (which is analogous to the classical distance from the center of the object);
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Stellar black holes have much greater average densities than supermassive black holes. If one accumulates matter at
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also reach this density), such an accumulation would fall within its own Schwarzschild radius at about 3 
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A.P. Klimets. (2023). Quantum Gravity. Current Research in Statistics & Mathematics, 2(1), 141-155.
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A small mass has an extremely small Schwarzschild radius. A black hole of mass similar to that of
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Calculating the maximum volume and radius possible given a density before a black hole forms
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Klimets A.P., Philosophy Documentation Center, Western University-Canada, 2017, pp.25-30
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Takekawa, Shunya; Oka, Tomoharu; Iwata, Yuhei; Tsujimoto, Shiho; Nomura, Mariko (2019).
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The Schwarzschild radius of an object is proportional to its mass. Accordingly, the
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Principles of astrophysics: using gravity and stellar physics to explore the cosmos
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Sitzungsberichte der Königlich Preussischen Akademie der Wissenschaften zu Berlin
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is approximately 12 million kilometres. Its mass is about 4.1 million 
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has a Schwarzschild radius of approximately 3.0 km (1.9 mi), whereas
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was equal to the speed of light. It had been identified in the 18th century by
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Any object whose radius is smaller than its Schwarzschild radius is called a
4897: 4544: 4447: 4235: 4230: 3961: 2103:{\displaystyle {\frac {t_{r}}{t}}={\sqrt {1-{\frac {r_{\mathrm {s} }}{r}}}}} 1878: 1812: 699: 3941:. Undergraduate Lecture Notes in Physics. New York: Springer. p. 208. 3755: 3593:"Indication of Another Intermediate-mass Black Hole in the Galactic Center" 3021:
Modern general relativity: black holes, gravitational waves, and cosmology
4807: 4766: 4664: 3876:. School of Science and Technology, Singapore. March 2003. Archived from 3568: 3508: 3376: 3023:. Cambridge ; New York, NY: Cambridge University Press. p. 92. 2816:, which could also either be a static black hole or a rotating black hole 1882: 1774: 1115: 1013: 849: 3747: 2238:) corresponding to a given mass are similar when the mass is around one 4847: 3050:
Sitzungsberichte der Königlich Preussischen Akademie der Wissenschaften
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Revealing the Heart of the Galaxy: The Milky Way and its Black Hole
3667: 3609: 3525: 3471: 3393: 3305: 2721:{\displaystyle r_{\text{s}}={\sqrt {\frac {3c^{2}}{8\pi G\rho }}}.} 3730: 3454: 2781:
Charged black hole or Newman black hole and Kerr–Newman black hole
1532: 1392: 1357: 467: 3905:/3 Mount Everest is composed of granite, which has a density of 1960:, it is convenient to write the gravitational radius in the form 1720: 1497: 1427: 471: 3972: 3251:
Encyclopedia of Physical Science and Technology (Third Edition)
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Montgomery, Colin; Orchiston, Wayne; Whittingham, Ian (2009).
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Gravitational radius and the Heisenberg Uncertainty Principle
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are both taken to be unity, which reduces this equation to
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Using these values, one can calculate a mass estimate of
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is the elapsed time for an observer at radial coordinate
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Radius of the event horizon of a Schwarzschild black hole
62:, who calculated this exact solution for the theory of 2624:{\displaystyle \Delta r_{s}\Delta r\geq \ell _{P}^{2}} 2293: 2248: 1877:
would have a Schwarzschild radius much smaller than a
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was debated for decades. It was found that the one at
2869: 2666: 2583: 2535: 2343: 2207: 2162: 2050: 1966: 1951:{\displaystyle \ell _{P}={\sqrt {(G/c^{3})\,\hbar }}} 1902: 1736:. The surface at the Schwarzschild radius acts as an 470:'s is approximately 9 mm (0.35 in) and the 415: 382: 347: 314: 288: 232: 189: 165: 75: 4785: 4637: 4599: 4578: 4517: 4476: 4425: 4291: 4184: 4094: 4019: 3099: 2891: 2720: 2623: 2569: 2518: 2321: 2275: 2230: 2189: 2102: 2016: 1950: 687: 630: 564: 542: 498: 474:'s is approximately 0.1 mm (0.0039 in). 427: 401: 360: 333: 300: 270: 218: 171: 120:{\displaystyle r_{\text{s}}={\frac {2GM}{c^{2}}},} 119: 2994:(2nd ed.). Cambridge, U.K. ; New York: 1840:(the density of the nucleus of an atom, about 10 1615:Black hole classification by Schwarzschild radius 2925:One can calculate the Schwarzschild radius: 2 × 2757:, a second requirement for black hole formation 631:{\textstyle {\frac {3c^{6}}{32\pi G^{3}M^{2}}}} 271:{\displaystyle {\frac {1}{1-{r_{\text{s}}}/r}}} 3285:Event Horizon Telescope Collaboration (2019). 3984: 3808:Pacucci, Fabio; Loeb, Abraham (1 June 2020). 8: 3194:Journal of Astronomical History and Heritage 3106:. The University of Chicago Press. pp.  183:). The solution contained terms of the form 3919: 3917: 4550:Magnetospheric eternally collapsing object 3991: 3977: 3969: 3240: 3238: 2283:), when both are of the same order as the 688:{\textstyle {\frac {3c^{2}}{8\pi Gr^{2}}}} 476: 3843: 3825: 3729: 3684: 3666: 3626: 3608: 3507: 3453: 3435: 3433: 3375: 3322: 3304: 2874: 2868: 2804:, a hypothetical leftover of the Big Bang 2786:A classification of black holes by mass: 2691: 2680: 2671: 2665: 2615: 2610: 2591: 2582: 2561: 2556: 2540: 2534: 2502: 2497: 2491: 2473: 2465: 2451: 2442: 2430: 2416: 2399: 2385: 2374: 2357: 2348: 2342: 2311: 2302: 2294: 2292: 2263: 2255: 2247: 2217: 2206: 2181: 2172: 2161: 2086: 2085: 2079: 2071: 2057: 2051: 2049: 1999: 1990: 1983: 1971: 1965: 1942: 1933: 1924: 1916: 1907: 1901: 676: 655: 645: 643: 619: 609: 591: 581: 579: 557: 532: 515: 513: 491: 414: 393: 381: 352: 346: 325: 313: 287: 257: 250: 245: 233: 231: 208: 201: 196: 188: 164: 106: 89: 80: 74: 2570:{\displaystyle r_{s}r\sim \ell _{P}^{2}} 1618: 1610:Derivation of the Schwarzschild solution 2980: 2844: 2766:Classification of black holes by type: 2475: 2296: 2257: 2214: 1943: 3865: 3863: 3783:. Cambridge University Press. p.  3494:Measurement of the Black Hole Mass". 2731:For example, the density of water is 372:. The physical significance of these 69:The Schwarzschild radius is given as 7: 4926: 3137:Journal for the History of Astronomy 2322:{\textstyle {\sqrt {\hbar G/c^{3}}}} 2017:{\displaystyle r_{s}=2\,(G/c^{3})Mc} 3651:Binary Black Hole Merger GW190521" 2771:Static or Schwarzschild black hole 2597: 2584: 2276:{\textstyle M={\sqrt {\hbar c/G}}} 2087: 969:Sagittarius A* (SMBH in Milky Way) 219:{\displaystyle 1-{r_{\text{s}}}/r} 25: 3214:10.3724/SP.J.1440-2807.2009.02.01 2991:Astronomy: a physical perspective 543:{\textstyle {\frac {2GM}{c^{2}}}} 4925: 4916: 4915: 4214:Tolman–Oppenheimer–Volkoff limit 4085: 2793:and extra-dimensional black hole 2633:Heisenberg uncertainty principle 1803:The Schwarzschild radius of the 4331:Innermost stable circular orbit 2892:{\displaystyle r_{\text{s}}=2M} 2631:, which is another form of the 2152:Compton wavelength intersection 2124:within the gravitational field; 38:is a physical parameter in the 4757:Timeline of black hole physics 3133:"John Michell and Black Holes" 2448: 2231:{\displaystyle 2\pi \hbar /Mc} 2037:In gravitational time dilation 2005: 1984: 1939: 1918: 1785:density (in this example, 997 478:Object's Schwarzschild radius 402:{\displaystyle r=r_{\text{s}}} 334:{\displaystyle r=r_{\text{s}}} 1: 4525:Nonsingular black hole models 3292:Astrophysical Journal Letters 3249:. In Meyer, Robert A. (ed.). 3253:. Cambridge, Massachusetts: 3071:Schwarzschild, Karl (1916). 3044:Schwarzschild, Karl (1916). 2988:Kutner, Marc Leslie (2003). 2147:is the Schwarzschild radius. 1773:have been detected, such as 1665:Intermediate-mass black hole 368:has come to be known as the 361:{\displaystyle r_{\text{s}}} 4747:Rossi X-ray Timing Explorer 4712:Hypercompact stellar system 4702:Gamma-ray burst progenitors 3245:Anderson, James L. (2001). 2776:Rotating or Kerr black hole 2042:Gravitational time dilation 1620:Black hole classifications 4978: 4433:Black hole complementarity 4400:Bousso's holographic bound 4385:Quasi-periodic oscillation 4083: 4077:Malament–Hogarth spacetime 3777:Robert H. Sanders (2013). 3157:10.1177/002182867901000104 2996:Cambridge University Press 2156:The Schwarzschild radius ( 1866: 1829: 1755: 1740:in a non-rotating body (a 1607: 44:Einstein's field equations 4911: 4304:Gravitational singularity 4006: 3814:The Astrophysical Journal 3655:The Astrophysical Journal 3597:The Astrophysical Journal 3564:"Hiding black hole found" 3496:The Astrophysical Journal 2190:{\displaystyle 2GM/c^{2}} 4888:PSO J030947.49+271757.31 4813:SDSS J150243.09+111557.3 4346:Blandford–Znajek process 3935:Keeton, Charles (2014). 3845:10.3847/1538-4357/ab886e 3686:10.3847/2041-8213/aba493 3628:10.3847/2041-8213/aafb07 3324:10.3847/2041-8213/AB0EC7 3131:Schaffer, Simon (1979). 2853:geometrized unit systems 2822:, if its density is the 1779:stellar mass black holes 139:is the object mass, and 46:that corresponds to the 4144:Active galactic nucleus 2828:hypothetical black hole 2814:Supermassive black hole 1805:supermassive black hole 1764:supermassive black hole 1758:Supermassive black hole 1752:Supermassive black hole 1641:Supermassive black hole 1112:intermediate black hole 1061:intermediate black hole 4772:Tidal disruption event 4742:Supermassive dark star 4660:Black holes in fiction 4645:Outline of black holes 4278:Supermassive dark star 4197:Gravitational collapse 3019:Guidry, M. W. (2019). 2893: 2722: 2625: 2571: 2520: 2323: 2277: 2232: 2191: 2104: 2018: 1952: 1887:primordial black holes 689: 632: 574:Schwarzschild density 566: 544: 500: 429: 403: 362: 335: 302: 272: 220: 173: 133:gravitational constant 121: 40:Schwarzschild solution 4650:Black Hole Initiative 4463:Holographic principle 3442:Astrophysical Journal 3363:Astrophysical Journal 3098:Wald, Robert (1984). 2894: 2802:Primordial black hole 2723: 2626: 2572: 2521: 2324: 2278: 2233: 2192: 2105: 2019: 1953: 690: 633: 567: 545: 508:Schwarzschild radius 501: 437:spacetime singularity 430: 404: 363: 336: 303: 273: 221: 174: 122: 4453:Final parsec problem 4412:Schwarzschild radius 3907:2750 kg⋅m 2867: 2664: 2581: 2533: 2341: 2291: 2246: 2205: 2160: 2048: 1964: 1900: 1855:and thus would be a 769:(one of the largest 642: 578: 556: 512: 490: 452:Pierre-Simon Laplace 413: 380: 370:Schwarzschild radius 345: 312: 286: 230: 187: 181:Schwarzschild metric 163: 73: 36:gravitational radius 32:Schwarzschild radius 4752:Superluminal motion 4727:Population III star 4697:Gravitational waves 4655:Black hole starship 4438:Information paradox 3883:on 10 December 2014 3836:2020ApJ...895...95P 3748:10.1038/nature10636 3740:2011Natur.480..215M 3677:2020ApJ...900L..13A 3619:2019ApJ...871L...1T 3518:2005ApJ...632..799P 3464:2008ApJ...689.1044G 3386:2005ApJ...631..280B 3315:2019ApJ...875L...1E 3206:2009JAHH...12...90M 3149:1979JHA....10...42S 3085:1916skpa.conf..424S 3058:1916SPAW.......189S 2755:Chandrasekhar limit 2620: 2566: 2507: 1892:When moving to the 1742:rotating black hole 1621: 479: 428:{\displaystyle r=0} 301:{\displaystyle r=0} 54:of a Schwarzschild 18:Schwarzchild radius 4586:Optical black hole 4499:Reissner–Nordström 4458:Firewall (physics) 4363:Gravitational lens 3102:General Relativity 2889: 2833:Virtual black hole 2808:Stellar black hole 2751:, a general survey 2718: 2641:Virtual black hole 2621: 2606: 2567: 2552: 2516: 2493: 2319: 2273: 2228: 2199:Compton wavelength 2187: 2100: 2026:virtual black hole 2014: 1948: 1857:stellar black hole 1832:Stellar black hole 1826:Stellar black hole 1726:up to 0.1 mm 1692:Stellar black hole 1619: 685: 628: 562: 540: 496: 477: 425: 399: 358: 341:respectively. The 331: 298: 268: 216: 169: 157:Karl Schwarzschild 117: 64:general relativity 60:Karl Schwarzschild 4939: 4938: 4732:Supermassive star 4722:Naked singularity 4717:Membrane paradigm 4443:Cosmic censorship 4417:Spaghettification 4405:Immirzi parameter 4358:Hawking radiation 4299:Astrophysical jet 4268:Supermassive star 4258:Binary black hole 4192:Stellar evolution 4134:Intermediate-mass 3948:978-1-4614-9236-8 3794:978-1-107-51274-0 3724:(7376): 215–218. 3264:978-0-12-227410-7 3117:978-0-226-87033-5 3030:978-1-107-19789-3 3005:978-0-521-82196-4 2877: 2713: 2712: 2674: 2511: 2486: 2471: 2436: 2405: 2380: 2317: 2271: 2098: 2096: 2066: 1946: 1730: 1729: 1601: 1600: 771:known black holes 683: 626: 538: 396: 355: 328: 266: 253: 204: 172:{\displaystyle M} 112: 83: 16:(Redirected from 4969: 4929: 4928: 4919: 4918: 4591:Sonic black hole 4540:Dark-energy star 4395:Bekenstein bound 4380:M–sigma relation 4309:Ring singularity 4089: 3993: 3986: 3979: 3970: 3964: 3959: 3953: 3952: 3932: 3926: 3921: 3912: 3911: 3908: 3898: 3890: 3888: 3882: 3875: 3867: 3858: 3857: 3847: 3829: 3805: 3799: 3798: 3774: 3768: 3767: 3733: 3713: 3707: 3706: 3688: 3670: 3639: 3633: 3632: 3630: 3612: 3588: 3582: 3581: 3579: 3577: 3560: 3554: 3553: 3511: 3509:astro-ph/0506665 3490: 3484: 3483: 3457: 3448:(2): 1044–1062. 3437: 3428: 3426: 3424: 3418: 3410: 3405: 3379: 3377:astro-ph/0509839 3357: 3351: 3349: 3347: 3341: 3333: 3328: 3326: 3308: 3282: 3276: 3275: 3273: 3271: 3242: 3233: 3232: 3230: 3224:. Archived from 3191: 3182: 3176: 3175: 3173: 3171: 3128: 3122: 3121: 3105: 3095: 3089: 3088: 3068: 3062: 3061: 3041: 3035: 3034: 3016: 3010: 3009: 2985: 2969: 2967: 2965: 2959: 2957: 2951: 2949: 2946: 2940: 2938: 2932: 2930: 2923: 2917: 2915: 2913: 2906: 2900: 2898: 2896: 2895: 2890: 2879: 2878: 2875: 2849: 2824:critical density 2820:Visible universe 2791:Micro black hole 2734: 2727: 2725: 2724: 2719: 2714: 2711: 2697: 2696: 2695: 2682: 2681: 2676: 2675: 2672: 2656: 2630: 2628: 2627: 2622: 2619: 2614: 2596: 2595: 2576: 2574: 2573: 2568: 2565: 2560: 2545: 2544: 2525: 2523: 2522: 2517: 2512: 2506: 2501: 2492: 2487: 2485: 2474: 2472: 2470: 2469: 2460: 2452: 2447: 2446: 2437: 2435: 2434: 2425: 2417: 2406: 2404: 2403: 2394: 2386: 2381: 2379: 2378: 2369: 2358: 2353: 2352: 2328: 2326: 2325: 2320: 2318: 2316: 2315: 2306: 2295: 2282: 2280: 2279: 2274: 2272: 2267: 2256: 2237: 2235: 2234: 2229: 2221: 2196: 2194: 2193: 2188: 2186: 2185: 2176: 2146: 2109: 2107: 2106: 2101: 2099: 2097: 2092: 2091: 2090: 2080: 2072: 2067: 2062: 2061: 2052: 2023: 2021: 2020: 2015: 2004: 2003: 1994: 1976: 1975: 1959: 1957: 1955: 1954: 1949: 1947: 1938: 1937: 1928: 1917: 1912: 1911: 1869:Micro black hole 1863:Micro black hole 1711:Micro black hole 1622: 1596: 1578: 1571: 1557: 1550: 1543: 1526: 1519: 1512: 1505: 1491: 1484: 1477: 1470: 1456: 1449: 1442: 1435: 1421: 1414: 1407: 1400: 1386: 1379: 1372: 1365: 1351: 1344: 1337: 1330: 1316: 1309: 1302: 1295: 1282: 1280: 1273: 1271: 1264: 1262: 1255: 1253: 1239: 1237: 1230: 1228: 1221: 1216: 1214: 1200: 1198: 1191: 1189: 1182: 1180: 1173: 1171: 1157: 1155: 1136: 1134: 1127: 1125: 1105: 1103: 1084: 1082: 1075: 1073: 1054: 1052: 1033: 1031: 1024: 1022: 1004: 1002: 988: 986: 979: 977: 963: 951: 949: 942: 940: 932:Andromeda Galaxy 922: 910: 908: 901: 899: 881: 869: 867: 860: 858: 840: 839:0.0045 kg/m 828: 826: 819: 817: 803: 802:0.0018 kg/m 791: 789: 782: 780: 757: 755: 747: 742: 736: 734: 726: 719: 717: 710: 708: 694: 692: 691: 686: 684: 682: 681: 680: 661: 660: 659: 646: 637: 635: 634: 629: 627: 625: 624: 623: 614: 613: 597: 596: 595: 582: 571: 569: 568: 563: 549: 547: 546: 541: 539: 537: 536: 527: 516: 505: 503: 502: 497: 480: 434: 432: 431: 426: 408: 406: 405: 400: 398: 397: 394: 367: 365: 364: 359: 357: 356: 353: 340: 338: 337: 332: 330: 329: 326: 307: 305: 304: 299: 278:, which becomes 277: 275: 274: 269: 267: 265: 261: 256: 255: 254: 251: 234: 225: 223: 222: 217: 212: 207: 206: 205: 202: 178: 176: 175: 170: 126: 124: 123: 118: 113: 111: 110: 101: 90: 85: 84: 81: 21: 4977: 4976: 4972: 4971: 4970: 4968: 4967: 4966: 4957:1916 in science 4942: 4941: 4940: 4935: 4907: 4883:ULAS J1342+0928 4843:SDSS J0849+1114 4828:Phoenix Cluster 4781: 4633: 4595: 4574: 4513: 4472: 4468:No-hair theorem 4421: 4375:Bondi accretion 4341:Penrose process 4287: 4253:Gamma-ray burst 4180: 4090: 4081: 4067:Direct collapse 4015: 4002: 3997: 3967: 3960: 3956: 3949: 3934: 3933: 3929: 3922: 3915: 3906: 3896: 3894: 3886: 3884: 3880: 3873: 3869: 3868: 3861: 3807: 3806: 3802: 3795: 3776: 3775: 3771: 3715: 3714: 3710: 3650: 3641: 3640: 3636: 3590: 3589: 3585: 3575: 3573: 3562: 3561: 3557: 3492: 3491: 3487: 3439: 3438: 3431: 3422: 3420: 3417: 3414: 3408: 3406: 3359: 3358: 3354: 3345: 3343: 3340: 3337: 3331: 3329: 3284: 3283: 3279: 3269: 3267: 3265: 3244: 3243: 3236: 3228: 3189: 3184: 3183: 3179: 3169: 3167: 3130: 3129: 3125: 3118: 3097: 3096: 3092: 3070: 3069: 3065: 3043: 3042: 3038: 3031: 3018: 3017: 3013: 3006: 2998:. p. 148. 2987: 2986: 2982: 2978: 2973: 2972: 2963: 2961: 2955: 2953: 2950: m⋅s 2947: 2944: 2942: 2936: 2934: 2928: 2926: 2924: 2920: 2911: 2909: 2907: 2903: 2870: 2865: 2864: 2850: 2846: 2841: 2745: 2732: 2698: 2687: 2683: 2667: 2662: 2661: 2652: 2649: 2587: 2579: 2578: 2536: 2531: 2530: 2478: 2461: 2453: 2438: 2426: 2418: 2395: 2387: 2370: 2359: 2344: 2339: 2338: 2335: 2307: 2289: 2288: 2244: 2243: 2203: 2202: 2177: 2158: 2157: 2154: 2145: 2139: 2135: 2129: 2119: 2118: 2081: 2053: 2046: 2045: 2039: 2034: 1995: 1967: 1962: 1961: 1929: 1903: 1898: 1897: 1896: 1871: 1865: 1854: 1851: 1838:nuclear density 1834: 1828: 1821: 1818: 1809:Galactic Center 1795: 1792: 1772: 1769: 1760: 1754: 1723: 1702: 1685: 1675: 1652: 1634: 1629: 1617: 1612: 1606: 1594: 1586: 1576: 1569: 1555: 1548: 1541: 1524: 1517: 1510: 1503: 1489: 1482: 1475: 1468: 1454: 1447: 1440: 1433: 1419: 1412: 1405: 1398: 1384: 1377: 1370: 1363: 1349: 1342: 1335: 1328: 1314: 1307: 1300: 1293: 1278: 1276: 1269: 1267: 1260: 1258: 1251: 1249: 1235: 1233: 1226: 1224: 1219: 1212: 1210: 1196: 1194: 1187: 1185: 1178: 1176: 1169: 1167: 1153: 1151: 1144: 1132: 1130: 1123: 1121: 1101: 1099: 1092: 1080: 1078: 1071: 1069: 1065:HCN-0.009-0.044 1050: 1048: 1041: 1029: 1027: 1020: 1018: 1000: 998: 984: 982: 975: 973: 961: 947: 945: 938: 936: 920: 906: 904: 897: 895: 880:0.042 kg/m 879: 865: 863: 856: 854: 838: 824: 822: 815: 813: 801: 787: 785: 778: 776: 753: 751: 740: 738: 732: 730: 721: 715: 713: 706: 704: 672: 662: 651: 647: 640: 639: 615: 605: 598: 587: 583: 576: 575: 554: 553: 528: 517: 510: 509: 488: 487: 460: 444:escape velocity 411: 410: 389: 378: 377: 348: 343: 342: 321: 310: 309: 284: 283: 246: 238: 228: 227: 197: 185: 184: 161: 160: 153: 102: 91: 76: 71: 70: 28: 23: 22: 15: 12: 11: 5: 4975: 4973: 4965: 4964: 4959: 4954: 4944: 4943: 4937: 4936: 4934: 4933: 4923: 4912: 4909: 4908: 4906: 4905: 4903:Swift J1644+57 4900: 4895: 4890: 4885: 4880: 4875: 4870: 4865: 4860: 4855: 4853:MS 0735.6+7421 4850: 4845: 4840: 4835: 4830: 4825: 4820: 4818:Sagittarius A* 4815: 4810: 4805: 4800: 4795: 4789: 4787: 4783: 4782: 4780: 4779: 4774: 4769: 4764: 4759: 4754: 4749: 4744: 4739: 4734: 4729: 4724: 4719: 4714: 4709: 4704: 4699: 4694: 4693: 4692: 4687: 4677: 4672: 4667: 4662: 4657: 4652: 4647: 4641: 4639: 4635: 4634: 4632: 4631: 4626: 4621: 4616: 4611: 4605: 4603: 4597: 4596: 4594: 4593: 4588: 4582: 4580: 4576: 4575: 4573: 4572: 4567: 4562: 4557: 4552: 4547: 4542: 4537: 4532: 4527: 4521: 4519: 4515: 4514: 4512: 4511: 4506: 4501: 4496: 4491: 4480: 4478: 4474: 4473: 4471: 4470: 4465: 4460: 4455: 4450: 4445: 4440: 4435: 4429: 4427: 4423: 4422: 4420: 4419: 4414: 4409: 4408: 4407: 4397: 4392: 4390:Thermodynamics 4387: 4382: 4377: 4372: 4371: 4370: 4360: 4355: 4353:Accretion disk 4350: 4349: 4348: 4343: 4333: 4328: 4323: 4318: 4317: 4316: 4311: 4301: 4295: 4293: 4289: 4288: 4286: 4285: 4280: 4275: 4270: 4265: 4260: 4255: 4250: 4249: 4248: 4243: 4238: 4228: 4227: 4226: 4216: 4211: 4210: 4209: 4199: 4194: 4188: 4186: 4182: 4181: 4179: 4178: 4177: 4176: 4171: 4166: 4161: 4156: 4151: 4146: 4136: 4131: 4130: 4129: 4119: 4118: 4117: 4114: 4109: 4098: 4096: 4092: 4091: 4084: 4082: 4080: 4079: 4074: 4069: 4064: 4059: 4054: 4049: 4044: 4039: 4034: 4029: 4027:BTZ black hole 4023: 4021: 4017: 4016: 4014: 4013: 4007: 4004: 4003: 3998: 3996: 3995: 3988: 3981: 3973: 3966: 3965: 3954: 3947: 3927: 3913: 3859: 3800: 3793: 3769: 3708: 3648: 3634: 3583: 3572:. 1 March 2019 3555: 3526:10.1086/444494 3502:(2): 799–808. 3485: 3472:10.1086/592738 3429: 3415: 3412: 3394:10.1086/432434 3370:(1): 280–300. 3352: 3338: 3335: 3277: 3263: 3255:Academic Press 3234: 3231:on 2 May 2014. 3177: 3123: 3116: 3090: 3063: 3036: 3029: 3011: 3004: 2979: 2977: 2974: 2971: 2970: 2931:10 m⋅kg⋅s 2918: 2901: 2888: 2885: 2882: 2873: 2843: 2842: 2840: 2837: 2836: 2835: 2830: 2817: 2811: 2805: 2799: 2794: 2784: 2783: 2778: 2773: 2764: 2763: 2758: 2752: 2744: 2741: 2733:1000 kg/m 2729: 2728: 2717: 2710: 2707: 2704: 2701: 2694: 2690: 2686: 2679: 2670: 2648: 2645: 2618: 2613: 2609: 2605: 2602: 2599: 2594: 2590: 2586: 2564: 2559: 2555: 2551: 2548: 2543: 2539: 2527: 2526: 2515: 2510: 2505: 2500: 2496: 2490: 2484: 2481: 2477: 2468: 2464: 2459: 2456: 2450: 2445: 2441: 2433: 2429: 2424: 2421: 2415: 2412: 2409: 2402: 2398: 2393: 2390: 2384: 2377: 2373: 2368: 2365: 2362: 2356: 2351: 2347: 2334: 2331: 2314: 2310: 2305: 2301: 2298: 2270: 2266: 2262: 2259: 2254: 2251: 2227: 2224: 2220: 2216: 2213: 2210: 2184: 2180: 2175: 2171: 2168: 2165: 2153: 2150: 2149: 2148: 2143: 2137: 2133: 2131: 2127: 2125: 2116: 2114: 2095: 2089: 2084: 2078: 2075: 2070: 2065: 2060: 2056: 2038: 2035: 2033: 2030: 2013: 2010: 2007: 2002: 1998: 1993: 1989: 1986: 1982: 1979: 1974: 1970: 1945: 1941: 1936: 1932: 1927: 1923: 1920: 1915: 1910: 1906: 1867:Main article: 1864: 1861: 1852: 1849: 1830:Main article: 1827: 1824: 1819: 1816: 1793: 1790: 1770: 1767: 1756:Main article: 1753: 1750: 1728: 1727: 1724: 1719: 1713: 1707: 1706: 1703: 1700: 1694: 1688: 1687: 1683: 1676: 1673: 1667: 1661: 1660: 1654: 1650: 1643: 1637: 1636: 1631: 1626: 1616: 1613: 1608:Main article: 1605: 1602: 1599: 1598: 1591: 1589: 1584: 1573: 1566: 1560: 1559: 1552: 1545: 1538: 1535: 1529: 1528: 1521: 1514: 1507: 1500: 1494: 1493: 1486: 1479: 1472: 1465: 1459: 1458: 1451: 1444: 1437: 1430: 1424: 1423: 1416: 1409: 1402: 1395: 1389: 1388: 1381: 1374: 1367: 1360: 1354: 1353: 1346: 1339: 1332: 1325: 1319: 1318: 1311: 1304: 1297: 1290: 1284: 1283: 1274: 1265: 1256: 1247: 1241: 1240: 1231: 1222: 1217: 1208: 1202: 1201: 1192: 1183: 1174: 1165: 1159: 1158: 1149: 1147: 1142: 1128: 1119: 1107: 1106: 1097: 1095: 1090: 1076: 1067: 1056: 1055: 1046: 1044: 1039: 1025: 1016: 1006: 1005: 996: 994: 980: 971: 965: 964: 959: 957: 943: 934: 924: 923: 921:0.44 kg/m 918: 916: 902: 893: 883: 882: 877: 875: 861: 852: 842: 841: 836: 834: 820: 811: 805: 804: 799: 797: 783: 774: 759: 758: 749: 728: 711: 702: 696: 695: 679: 675: 671: 668: 665: 658: 654: 650: 622: 618: 612: 608: 604: 601: 594: 590: 586: 572: 565:{\textstyle r} 561: 552:Actual radius 550: 535: 531: 526: 523: 520: 506: 499:{\textstyle M} 495: 484: 459: 456: 424: 421: 418: 392: 388: 385: 351: 324: 320: 317: 297: 294: 291: 264: 260: 249: 244: 241: 237: 215: 211: 200: 195: 192: 168: 152: 149: 145:speed of light 116: 109: 105: 100: 97: 94: 88: 79: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4974: 4963: 4960: 4958: 4955: 4953: 4950: 4949: 4947: 4932: 4924: 4922: 4914: 4913: 4910: 4904: 4901: 4899: 4896: 4894: 4891: 4889: 4886: 4884: 4881: 4879: 4878:Markarian 501 4876: 4874: 4871: 4869: 4866: 4864: 4861: 4859: 4856: 4854: 4851: 4849: 4846: 4844: 4841: 4839: 4836: 4834: 4831: 4829: 4826: 4824: 4821: 4819: 4816: 4814: 4811: 4809: 4806: 4804: 4803:XTE J1118+480 4801: 4799: 4798:XTE J1650-500 4796: 4794: 4791: 4790: 4788: 4784: 4778: 4775: 4773: 4770: 4768: 4765: 4763: 4760: 4758: 4755: 4753: 4750: 4748: 4745: 4743: 4740: 4738: 4735: 4733: 4730: 4728: 4725: 4723: 4720: 4718: 4715: 4713: 4710: 4708: 4705: 4703: 4700: 4698: 4695: 4691: 4688: 4686: 4683: 4682: 4681: 4678: 4676: 4673: 4671: 4668: 4666: 4663: 4661: 4658: 4656: 4653: 4651: 4648: 4646: 4643: 4642: 4640: 4636: 4630: 4627: 4625: 4622: 4620: 4617: 4615: 4612: 4610: 4607: 4606: 4604: 4602: 4598: 4592: 4589: 4587: 4584: 4583: 4581: 4577: 4571: 4568: 4566: 4563: 4561: 4558: 4556: 4553: 4551: 4548: 4546: 4543: 4541: 4538: 4536: 4533: 4531: 4528: 4526: 4523: 4522: 4520: 4516: 4510: 4507: 4505: 4502: 4500: 4497: 4495: 4492: 4489: 4485: 4484:Schwarzschild 4482: 4481: 4479: 4475: 4469: 4466: 4464: 4461: 4459: 4456: 4454: 4451: 4449: 4446: 4444: 4441: 4439: 4436: 4434: 4431: 4430: 4428: 4424: 4418: 4415: 4413: 4410: 4406: 4403: 4402: 4401: 4398: 4396: 4393: 4391: 4388: 4386: 4383: 4381: 4378: 4376: 4373: 4369: 4366: 4365: 4364: 4361: 4359: 4356: 4354: 4351: 4347: 4344: 4342: 4339: 4338: 4337: 4334: 4332: 4329: 4327: 4326:Photon sphere 4324: 4322: 4321:Event horizon 4319: 4315: 4312: 4310: 4307: 4306: 4305: 4302: 4300: 4297: 4296: 4294: 4290: 4284: 4281: 4279: 4276: 4274: 4271: 4269: 4266: 4264: 4261: 4259: 4256: 4254: 4251: 4247: 4246:Related links 4244: 4242: 4239: 4237: 4234: 4233: 4232: 4229: 4225: 4224:Related links 4222: 4221: 4220: 4217: 4215: 4212: 4208: 4207:Related links 4205: 4204: 4203: 4200: 4198: 4195: 4193: 4190: 4189: 4187: 4183: 4175: 4172: 4170: 4167: 4165: 4162: 4160: 4157: 4155: 4152: 4150: 4147: 4145: 4142: 4141: 4140: 4137: 4135: 4132: 4128: 4125: 4124: 4123: 4120: 4115: 4113: 4110: 4108: 4105: 4104: 4103: 4100: 4099: 4097: 4093: 4088: 4078: 4075: 4073: 4070: 4068: 4065: 4063: 4060: 4058: 4055: 4053: 4050: 4048: 4045: 4043: 4040: 4038: 4035: 4033: 4032:Schwarzschild 4030: 4028: 4025: 4024: 4022: 4018: 4012: 4009: 4008: 4005: 4001: 3994: 3989: 3987: 3982: 3980: 3975: 3974: 3971: 3963: 3958: 3955: 3950: 3944: 3940: 3939: 3931: 3928: 3925: 3920: 3918: 3914: 3910: 3904: 3901: 3879: 3872: 3866: 3864: 3860: 3855: 3851: 3846: 3841: 3837: 3833: 3828: 3823: 3819: 3815: 3811: 3804: 3801: 3796: 3790: 3786: 3782: 3781: 3773: 3770: 3765: 3761: 3757: 3753: 3749: 3745: 3741: 3737: 3732: 3727: 3723: 3719: 3712: 3709: 3704: 3700: 3696: 3692: 3687: 3682: 3678: 3674: 3669: 3664: 3660: 3656: 3652: 3647: 3638: 3635: 3629: 3624: 3620: 3616: 3611: 3606: 3602: 3598: 3594: 3587: 3584: 3571: 3570: 3565: 3559: 3556: 3551: 3547: 3543: 3539: 3535: 3531: 3527: 3523: 3519: 3515: 3510: 3505: 3501: 3497: 3489: 3486: 3481: 3477: 3473: 3469: 3465: 3461: 3456: 3451: 3447: 3443: 3436: 3434: 3430: 3403: 3399: 3395: 3391: 3387: 3383: 3378: 3373: 3369: 3365: 3364: 3356: 3353: 3325: 3320: 3316: 3312: 3307: 3302: 3298: 3294: 3293: 3288: 3281: 3278: 3266: 3260: 3256: 3252: 3248: 3241: 3239: 3235: 3227: 3223: 3219: 3215: 3211: 3207: 3203: 3199: 3195: 3188: 3181: 3178: 3166: 3162: 3158: 3154: 3150: 3146: 3142: 3138: 3134: 3127: 3124: 3119: 3113: 3109: 3104: 3103: 3094: 3091: 3086: 3082: 3078: 3074: 3067: 3064: 3059: 3055: 3051: 3047: 3040: 3037: 3032: 3026: 3022: 3015: 3012: 3007: 3001: 2997: 2993: 2992: 2984: 2981: 2975: 2922: 2919: 2905: 2902: 2886: 2883: 2880: 2871: 2862: 2858: 2854: 2848: 2845: 2838: 2834: 2831: 2829: 2825: 2821: 2818: 2815: 2812: 2809: 2806: 2803: 2800: 2798: 2797:Planck length 2795: 2792: 2789: 2788: 2787: 2782: 2779: 2777: 2774: 2772: 2769: 2768: 2767: 2762: 2759: 2756: 2753: 2750: 2747: 2746: 2742: 2740: 2738: 2715: 2708: 2705: 2702: 2699: 2692: 2688: 2684: 2677: 2668: 2660: 2659: 2658: 2655: 2646: 2644: 2642: 2638: 2634: 2616: 2611: 2607: 2603: 2600: 2592: 2588: 2562: 2557: 2553: 2549: 2546: 2541: 2537: 2513: 2508: 2503: 2498: 2494: 2488: 2482: 2479: 2466: 2462: 2457: 2454: 2443: 2439: 2431: 2427: 2422: 2419: 2413: 2410: 2407: 2400: 2396: 2391: 2388: 2382: 2375: 2371: 2366: 2363: 2360: 2354: 2349: 2345: 2337: 2336: 2332: 2330: 2312: 2308: 2303: 2299: 2286: 2285:Planck length 2268: 2264: 2260: 2252: 2249: 2241: 2225: 2222: 2218: 2211: 2208: 2200: 2182: 2178: 2173: 2169: 2166: 2163: 2151: 2142: 2138: 2132: 2126: 2123: 2113: 2112: 2111: 2093: 2082: 2076: 2073: 2068: 2063: 2058: 2054: 2043: 2036: 2031: 2029: 2027: 2011: 2008: 2000: 1996: 1991: 1987: 1980: 1977: 1972: 1968: 1934: 1930: 1925: 1921: 1913: 1908: 1904: 1895: 1890: 1888: 1884: 1880: 1876: 1875:Mount Everest 1870: 1862: 1860: 1858: 1847: 1846:neutron stars 1843: 1839: 1833: 1825: 1823: 1814: 1810: 1806: 1801: 1797: 1788: 1782: 1780: 1776: 1765: 1759: 1751: 1749: 1745: 1743: 1739: 1738:event horizon 1735: 1725: 1722: 1718: 1714: 1712: 1709: 1708: 1704: 1699: 1695: 1693: 1690: 1689: 1686: 1682: 1677: 1672: 1668: 1666: 1663: 1662: 1659: 1655: 1653: 1649: 1644: 1642: 1639: 1638: 1632: 1627: 1624: 1623: 1614: 1611: 1603: 1592: 1590: 1587: 1583: 1579:10 m (2  1574: 1567: 1565: 1562: 1561: 1553: 1546: 1539: 1536: 1534: 1531: 1530: 1522: 1515: 1508: 1501: 1499: 1496: 1495: 1487: 1480: 1473: 1466: 1464: 1461: 1460: 1452: 1445: 1438: 1431: 1429: 1426: 1425: 1417: 1410: 1403: 1396: 1394: 1391: 1390: 1382: 1375: 1368: 1361: 1359: 1356: 1355: 1347: 1340: 1333: 1326: 1324: 1321: 1320: 1312: 1305: 1298: 1291: 1289: 1286: 1285: 1275: 1266: 1257: 1248: 1246: 1243: 1242: 1232: 1223: 1218: 1209: 1207: 1204: 1203: 1193: 1184: 1175: 1166: 1164: 1161: 1160: 1150: 1148: 1145: 1141: 1129: 1120: 1117: 1113: 1109: 1108: 1098: 1096: 1093: 1089: 1077: 1068: 1066: 1062: 1058: 1057: 1047: 1045: 1042: 1038: 1026: 1017: 1015: 1011: 1008: 1007: 997: 995: 992: 981: 972: 970: 967: 966: 962:640 kg/m 960: 958: 955: 944: 935: 933: 929: 926: 925: 919: 917: 914: 903: 894: 892: 888: 885: 884: 878: 876: 873: 862: 853: 851: 850:NGC 4889 847: 844: 843: 837: 835: 832: 821: 812: 810: 807: 806: 800: 798: 795: 784: 775: 772: 768: 764: 761: 760: 750: 746: 729: 725: 712: 703: 701: 698: 697: 677: 673: 669: 666: 663: 656: 652: 648: 620: 616: 610: 606: 602: 599: 592: 588: 584: 573: 559: 551: 533: 529: 524: 521: 518: 507: 493: 485: 482: 481: 475: 473: 469: 465: 457: 455: 453: 449: 445: 440: 438: 422: 419: 416: 390: 386: 383: 375: 374:singularities 371: 349: 322: 318: 315: 295: 292: 289: 281: 262: 258: 247: 242: 239: 235: 213: 209: 198: 193: 190: 182: 166: 158: 150: 148: 146: 142: 138: 134: 130: 114: 107: 103: 98: 95: 92: 86: 77: 67: 65: 61: 57: 53: 52:event horizon 50:defining the 49: 45: 41: 37: 33: 19: 4833:PKS 1302-102 4707:Gravity well 4675:Compact star 4629:Microquasars 4614:Most massive 4518:Alternatives 4411: 4283:X-ray binary 4202:Neutron star 4139:Supermassive 4116:Hawking star 4057:Supermassive 3957: 3937: 3930: 3902: 3899: 3892: 3885:. Retrieved 3878:the original 3817: 3813: 3803: 3779: 3772: 3721: 3717: 3711: 3658: 3654: 3645: 3637: 3600: 3596: 3586: 3574:. Retrieved 3567: 3558: 3499: 3495: 3488: 3445: 3441: 3367: 3361: 3355: 3296: 3290: 3280: 3268:. Retrieved 3250: 3226:the original 3197: 3193: 3180: 3168:. Retrieved 3140: 3136: 3126: 3101: 3093: 3076: 3066: 3049: 3039: 3020: 3014: 2990: 2983: 2921: 2904: 2860: 2856: 2847: 2785: 2765: 2761:John Michell 2730: 2653: 2650: 2639:. (See also 2637:Planck scale 2528: 2155: 2140: 2121: 2040: 2024:, (see also 1894:Planck scale 1891: 1872: 1835: 1802: 1798: 1783: 1761: 1746: 1731: 1716: 1697: 1680: 1670: 1647: 1581: 1281:10 kg/m 1238:10 kg/m 1199:10 kg/m 1156:10 kg/m 1139: 1137:(0.066  1104:10 kg/m 1087: 1053:10 kg/m 1036: 1003:10 kg/m 829:(~1300  792:(~2000  461: 448:John Michell 441: 369: 154: 140: 136: 128: 68: 35: 31: 29: 4952:Black holes 4823:Centaurus A 4777:Planet Nine 4680:Exotic star 4609:Black holes 4555:Planck star 4504:Kerr–Newman 4219:White dwarf 4169:Radio-Quiet 4127:Microquasar 4000:Black holes 2240:Planck mass 1705:30 km 1564:Planck mass 1537:70 kg 1220:2.82 m 1085:(14.8  1034:(1.53  989:(0.08  911:(~130  870:(~410  4946:Categories 4873:Q0906+6930 4863:Hercules A 4793:Cygnus X-1 4762:White hole 4737:Quasi-star 4690:Preon star 4685:Quark star 4670:Big Bounce 4530:Black star 4488:Derivation 4336:Ergosphere 4292:Properties 4273:Quasi-star 4263:Quark star 4174:Radio-Loud 4062:Primordial 4052:Kugelblitz 3887:8 December 3827:2004.07246 3668:2009.01190 3661:(1): L13. 3610:1812.10733 3534:1811/48314 3425:10 kg 3348:10 kg 3306:1906.11238 3270:23 October 2976:References 2966:10 nm 2939:10 kg 2914:10 kg 2749:Black hole 2197:) and the 2032:Other uses 1777:.) Unlike 1734:black hole 1656:0.001–400 1604:Derivation 1254:10 kg 1215:10 kg 1172:10 kg 1126:10 kg 1110:Resulting 1074:10 kg 1059:Potential 1023:10 kg 978:10 kg 952:(3.3  941:10 kg 900:10 kg 891:Messier 87 859:10 kg 818:10 kg 781:10 kg 756: kg/m 722:0.25  709:10 kg 458:Parameters 56:black hole 4898:AT2018hyz 4545:Gravastar 4535:Dark star 4368:Microlens 4241:Hypernova 4236:Micronova 4231:Supernova 4185:Formation 3895:volume = 3854:215786268 3820:(2): 95. 3731:1112.1078 3703:221447444 3695:2041-8213 3603:(1): L1. 3542:0004-637X 3455:0808.2870 3299:(1): L1. 3200:(2): 90. 3165:123958527 3143:: 42–43. 2958:10 m 2709:ρ 2703:π 2608:ℓ 2604:≥ 2598:Δ 2585:Δ 2554:ℓ 2550:∼ 2495:ℓ 2476:ℏ 2449:⇒ 2297:ℏ 2258:ℏ 2215:ℏ 2212:π 2077:− 1944:ℏ 1905:ℓ 1879:nanometre 1813:Milky Way 1272:10 m 1263:10 m 1229:10 m 1190:10 m 1181:10 m 1135:10 m 1083:10 m 1032:10 m 987:10 m 950:10 m 909:10 m 868:10 m 827:10 m 790:10 m 767:Phoenix A 735:10 m 718:10 m 700:Milky Way 667:π 603:π 243:− 194:− 155:In 1916, 66:in 1916. 4921:Category 4808:A0620-00 4767:Wormhole 4665:Big Bang 4565:Fuzzball 4448:ER = EPR 4314:Theorems 4112:Electron 4107:Extremal 4037:Rotating 3756:22158244 3569:phys.org 3550:13886279 3480:18335611 3421:0.34(12) 3416:☉ 3411:10  3402:53415285 3344:1.29(14) 3339:☉ 3334:10  3222:55890996 2743:See also 1883:Big Bang 1853:☉ 1820:☉ 1794:☉ 1775:NGC 4889 1771:☉ 1678:10 km ≈ 1597:10 kg/m 1558:10 kg/m 1527:10 kg/m 1492:10 kg/m 1457:10 kg/m 1422:10 kg/m 1387:10 kg/m 1352:10 kg/m 1317:10 kg/m 1116:GW190521 1014:NGC 4395 280:singular 4931:Commons 4893:P172+18 4848:TON 618 4786:Notable 4638:Related 4624:Quasars 4619:Nearest 4579:Analogs 4509:Hayward 4477:Metrics 4122:Stellar 4047:Virtual 4042:Charged 4011:Outline 3832:Bibcode 3764:4408896 3736:Bibcode 3673:Bibcode 3615:Bibcode 3576:15 June 3514:Bibcode 3460:Bibcode 3382:Bibcode 3311:Bibcode 3202:Bibcode 3145:Bibcode 3108:152–153 3081:Bibcode 3079:: 424. 3054:Bibcode 3052:: 189. 2826:, as a 2635:on the 2110:where: 1811:of the 1807:at the 1635:radius 1633:Approx. 1628:Approx. 1463:Mercury 1288:Neptune 1206:Jupiter 1118:merger 809:Ton 618 483:Object 151:History 143:is the 131:is the 34:or the 4868:3C 273 4858:NeVe 1 4838:OJ 287 4560:Q star 4426:Issues 4159:Blazar 4149:Quasar 3945:  3852:  3791:  3762:  3754:  3718:Nature 3701:  3693:  3548:  3540:  3478:  3407:1.7(6) 3400:  3330:6.5(7) 3261:  3220:  3170:4 June 3163:  3114:  3027:  3002:  2935:6.3715 2927:6.6738 2910:6.3715 2654:ρ 2529:Thus, 1958:≈ 10 m 1715:up to 1645:10–10 1572:10 kg 1506:10 kg 1471:10 kg 1436:10 kg 1401:10 kg 1366:10 kg 1331:10 kg 1323:Uranus 1296:10 kg 1245:Saturn 1100:1.8011 1070:6.3616 1049:1.4230 1019:7.1568 743:  127:where 48:radius 4962:Radii 4601:Lists 4102:Micro 4072:Rogue 4020:Types 3881:(PDF) 3874:(PDF) 3850:S2CID 3822:arXiv 3760:S2CID 3726:arXiv 3699:S2CID 3663:arXiv 3605:arXiv 3546:S2CID 3504:arXiv 3476:S2CID 3450:arXiv 3398:S2CID 3372:arXiv 3301:arXiv 3229:(PDF) 3218:S2CID 3190:(PDF) 3161:S2CID 2839:Notes 1684:Earth 1625:Class 1551:10 m 1544:10 m 1533:Human 1520:10 m 1513:10 m 1485:10 m 1478:10 m 1467:3.285 1450:10 m 1443:10 m 1415:10 m 1408:10 m 1397:4.867 1393:Venus 1380:10 m 1373:10 m 1358:Earth 1345:10 m 1338:10 m 1327:8.681 1310:10 m 1303:10 m 1292:1.024 1250:5.683 1152:9.125 1131:4.189 1122:2.823 1114:from 1028:1.062 999:1.068 752:0.000 486:Mass 468:Earth 435:is a 179:(see 4570:Geon 4494:Kerr 4095:Size 3943:ISBN 3889:2014 3789:ISBN 3752:PMID 3691:ISSN 3578:2022 3538:ISSN 3272:2023 3259:ISBN 3172:2018 3112:ISBN 3025:ISBN 3000:ISBN 2962:9.46 2954:9.46 2952:) = 2859:and 1842:kg/m 1787:kg/m 1721:Moon 1630:mass 1593:1.54 1575:3.23 1568:2.18 1554:1.49 1540:1.04 1523:1.35 1516:1.74 1509:1.09 1502:7.35 1498:Moon 1488:6.79 1481:2.44 1474:4.87 1453:1.80 1446:3.39 1439:9.47 1432:6.39 1428:Mars 1418:3.10 1411:6.05 1404:7.21 1383:2.04 1376:6.37 1369:8.87 1362:5.97 1348:9.68 1341:2.56 1334:1.29 1313:6.97 1306:2.47 1299:1.52 1277:2.27 1268:6.03 1259:8.42 1234:2.02 1211:1.90 1195:1.84 1177:2.95 1168:1.99 1079:9.44 1010:SMBH 983:1.23 974:8.26 928:SMBH 887:SMBH 846:SMBH 763:SMBH 472:Moon 450:and 308:and 226:and 30:The 4164:OVV 4154:LQG 3840:doi 3818:895 3744:doi 3722:480 3681:doi 3659:900 3623:doi 3601:871 3530:hdl 3522:doi 3500:632 3468:doi 3446:689 3390:doi 3368:631 3319:doi 3297:875 3210:doi 3153:doi 2948:458 2945:792 2943:299 2941:/ ( 2851:In 2739:). 2643:). 2577:or 2329:). 2028:). 1701:Sun 1696:10 1674:Sun 1669:10 1651:Sun 1225:7.0 1186:7.0 1163:Sun 1063:in 1012:in 946:5.0 937:3.4 930:in 905:1.9 896:1.3 889:in 864:6.2 855:4.2 848:in 823:1.9 814:1.3 765:in 754:029 741:900 714:2.4 705:1.6 638:or 464:Sun 282:at 42:to 4948:: 3916:^ 3891:. 3862:^ 3848:. 3838:. 3830:. 3816:. 3812:. 3787:. 3785:36 3758:. 3750:. 3742:. 3734:. 3720:. 3697:. 3689:. 3679:. 3671:. 3657:. 3653:. 3621:. 3613:. 3599:. 3595:. 3566:. 3544:. 3536:. 3528:. 3520:. 3512:. 3498:. 3474:. 3466:. 3458:. 3444:. 3432:^ 3419:= 3396:. 3388:. 3380:. 3366:. 3342:= 3317:. 3309:. 3295:. 3289:. 3257:. 3237:^ 3216:. 3208:. 3198:12 3196:. 3192:. 3159:. 3151:. 3141:10 3139:. 3135:. 3110:. 3075:. 3048:. 2960:= 2933:× 2855:, 2737:AU 2657:, 1889:. 1859:. 1844:; 1822:. 1762:A 1658:AU 1588:) 1547:~5 1146:) 1143:🜨 1094:) 1091:🜨 1043:) 993:) 991:AU 956:) 954:AU 915:) 913:AU 874:) 872:AU 833:) 831:AU 796:) 794:AU 773:) 748:) 745:ly 739:52 727:) 724:ly 600:32 454:. 147:. 135:, 4490:) 4486:( 3992:e 3985:t 3978:v 3951:. 3909:. 3903:h 3900:r 3897:π 3856:. 3842:: 3834:: 3824:: 3797:. 3766:. 3746:: 3738:: 3728:: 3705:. 3683:: 3675:: 3665:: 3649:⊙ 3646:M 3631:. 3625:: 3617:: 3607:: 3580:. 3552:. 3532:: 3524:: 3516:: 3506:: 3482:. 3470:: 3462:: 3452:: 3427:. 3423:× 3413:M 3409:× 3404:. 3392:: 3384:: 3374:: 3350:. 3346:× 3336:M 3332:× 3327:. 3321:: 3313:: 3303:: 3274:. 3212:: 3204:: 3174:. 3155:: 3147:: 3120:. 3087:. 3083:: 3060:. 3056:: 3033:. 3008:. 2968:. 2964:× 2956:× 2937:× 2929:× 2916:. 2912:× 2899:. 2887:M 2884:2 2881:= 2876:s 2872:r 2861:c 2857:G 2716:. 2706:G 2700:8 2693:2 2689:c 2685:3 2678:= 2673:s 2669:r 2617:2 2612:P 2601:r 2593:s 2589:r 2563:2 2558:P 2547:r 2542:s 2538:r 2514:. 2509:r 2504:2 2499:P 2489:= 2483:r 2480:2 2467:3 2463:c 2458:G 2455:2 2444:0 2440:P 2432:3 2428:c 2423:G 2420:2 2414:= 2411:c 2408:M 2401:3 2397:c 2392:G 2389:2 2383:= 2376:2 2372:c 2367:M 2364:G 2361:2 2355:= 2350:s 2346:r 2313:3 2309:c 2304:/ 2300:G 2287:( 2269:G 2265:/ 2261:c 2253:= 2250:M 2242:( 2226:c 2223:M 2219:/ 2209:2 2201:( 2183:2 2179:c 2174:/ 2170:M 2167:G 2164:2 2144:s 2141:r 2134:r 2128:t 2122:r 2117:r 2115:t 2094:r 2088:s 2083:r 2074:1 2069:= 2064:t 2059:r 2055:t 2012:c 2009:M 2006:) 2001:3 1997:c 1992:/ 1988:G 1985:( 1981:2 1978:= 1973:s 1969:r 1940:) 1935:3 1931:c 1926:/ 1922:G 1919:( 1914:= 1909:P 1850:M 1817:M 1791:M 1768:M 1717:M 1698:M 1681:R 1671:M 1648:M 1595:× 1585:P 1582:l 1577:× 1570:× 1556:× 1549:× 1542:× 1525:× 1518:× 1511:× 1504:× 1490:× 1483:× 1476:× 1469:× 1455:× 1448:× 1441:× 1434:× 1420:× 1413:× 1406:× 1399:× 1385:× 1378:× 1371:× 1364:× 1350:× 1343:× 1336:× 1329:× 1315:× 1308:× 1301:× 1294:× 1279:× 1270:× 1261:× 1252:× 1236:× 1227:× 1213:× 1197:× 1188:× 1179:× 1170:× 1154:× 1140:R 1133:× 1124:× 1102:× 1088:R 1081:× 1072:× 1051:× 1040:⊙ 1037:R 1030:× 1021:× 1001:× 985:× 976:× 948:× 939:× 907:× 898:× 866:× 857:× 825:× 816:× 788:× 786:3 779:× 777:2 737:( 733:× 731:5 720:( 716:× 707:× 678:2 674:r 670:G 664:8 657:2 653:c 649:3 621:2 617:M 611:3 607:G 593:6 589:c 585:3 560:r 534:2 530:c 525:M 522:G 519:2 494:M 423:0 420:= 417:r 395:s 391:r 387:= 384:r 354:s 350:r 327:s 323:r 319:= 316:r 296:0 293:= 290:r 263:r 259:/ 252:s 248:r 240:1 236:1 214:r 210:/ 203:s 199:r 191:1 167:M 141:c 137:M 129:G 115:, 108:2 104:c 99:M 96:G 93:2 87:= 82:s 78:r 20:)

Index

Schwarzchild radius
Schwarzschild solution
Einstein's field equations
radius
event horizon
black hole
Karl Schwarzschild
general relativity
gravitational constant
speed of light
Karl Schwarzschild
Schwarzschild metric
singular
singularities
spacetime singularity
escape velocity
John Michell
Pierre-Simon Laplace
Sun
Earth
Moon
Milky Way
ly
ly
SMBH
Phoenix A
known black holes
AU
Ton 618
AU

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