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at a rate of up to several per minute. At its estimated distance of 30,000 light years (~10 kpc), the most intense flares equal the total energy emission of the Sun in ~20 years.
34:, it was noticed to have become active on 23 October 2008, and then after a relatively quiescent interval, became much more active on 22 January 2009. It has been observed by the
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165:(An online catalog of AXP properties maintained by the pulsar group at McGill University)
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127:"ESA News Release: Swift, Fermi probe fireworks from flaring gamma-ray star"
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1E 1547.0-5408), is RA(J2000) = 15h50m54.11s, Dec(J2000) = −54°18'23.7".
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The rotation period, ~2.07 s, is the fastest yet observed for a magnetar.
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26:(SGR), the sixth to be discovered, located in the constellation
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671:This variable star–related article is a
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101:SpaceRef news item, 10 February 2009.
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80:The location of SGR J1550−5418 (aka
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61:orders of magnitude (magnetic field)
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40:Fermi Gamma-ray Space Telescope
16:Star in the constellation Norma
1:
675:. You can help Knowledge by
426:2XMM J160050.7–514245 (Apep)
112:NASA press release from GSFC
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69:The first observation of "
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53:, of the type known as
217:List of stars in Norma
206:Constellation of Norma
163:SGR/AXP Online Catalog
38:satellite, and by the
727:Norma (constellation)
722:Soft gamma repeaters
737:Variable star stubs
30:. Long known as an
24:soft gamma repeater
133:. 10 February 2009
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152:GCN CIRCULAR 8901
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630:Norma Cluster
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441:XTE J1550–564
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135:. Retrieved
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51:neutron star
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32:X-ray source
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482:HD 330075 b
477:HD 148156 b
472:HD 143361 b
467:HD 142415 b
71:light echos
716:Categories
459:Exoplanets
88:References
44:gamma rays
732:Magnetars
604:Shapley 1
56:magnetars
650:Category
558:NGC 6169
553:NGC 6167
548:NGC 6152
543:NGC 6134
538:NGC 6115
533:NGC 6087
528:NGC 6067
523:NGC 6031
518:NGC 6005
513:NGC 5999
508:NGC 5925
309:Variable
594:RCW 103
576:Nebulae
421:2M1540
400:330075
395:148156
390:143361
385:143183
380:142415
137:20 May
409:Other
236:Bayer
227:Stars
75:novas
36:Swift
28:Norma
22:is a
673:stub
589:Mz 3
584:Mz 1
362:V378
139:2015
82:AXP
718::
372:HD
357:QX
352:QV
347:QU
342:IM
337:RZ
332:RT
129:.
118:^
704:e
697:t
690:v
679:.
327:T
322:S
317:R
299:μ
294:λ
289:κ
284:ι
279:ι
274:θ
269:η
264:ζ
259:ε
254:δ
249:γ
244:γ
198:e
191:t
184:v
141:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.