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A Nature of radiation emanating from a body v/s frequency

  1. Jul 7, 2016 #1
    Does the nature of radiation emitted by dense bodies like black holes differ in frequency from radiation emitted by regular stars like our Sun ? I believe that the former radiates more x-rays and high frequencies rather than the latter which radiates mainly uv, visible and infra-red ranges. Is this so ?
  2. jcsd
  3. Jul 7, 2016 #2


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    Black holes do not radiate in the way you seem to think. Deducing the frequency of Hawking Radiation apparently is quite complex.
  4. Jul 7, 2016 #3


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    Phinds is correct
    ..... maybe you were thinking of the X-rays that are radiated by the material falling towards the black hole, prior to it crossing the event horizon
    do some googling on Cygnus X-1 for one of the earlier black hole X-ray sources identified

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