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One theory assumes that an X-ray-flash hypernova does not differ inherently from gamma-ray-emitting hypernovae, but rather in the orientation, relative to the line of sight to the observer, of the narrow beam of gamma radiation from the hypernova. That is, gamma rays
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assumed to be emitted, but in each case in a direction away from our instruments for observing them. Thus the only initially observable phenomenon is lower-energy x-rays emitted in a beam that diverges more than the gamma-ray beam
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photons, at distances too great for any associated X-ray emissions from them to be observed; nevertheless, the two main theories of the nature of an X-ray flash each assume that a hypernova is involved:
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A competing "dirty fireball" theory suggests that an X-ray flash comes from a hypernova that uses much of the available energy in expelling an unusually large amount of
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Transient emission of X-rays originating in a distant galaxy
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Nearly all hypernovae are detected via (higher-energy)
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176:"Supernova follows X-ray flash"
174:Türler, Marc (4 October 2006).
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62:"X-ray flash" astronomy
205:"X-ray Flash | COSMOS"
122:is a transient emission of
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120:X-ray flash
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215:29 October
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241:astronomy
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132:hypernova
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103:June 2024
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