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

AI Thread Summary
The discussion centers on the differences in radiation emitted by dense bodies like black holes compared to regular stars such as the Sun. It is suggested that black holes emit higher frequency radiation, particularly X-rays, while stars primarily emit UV, visible, and infrared radiation. However, it is clarified that black holes themselves do not radiate in the conventional sense; instead, the X-rays observed are often from material falling into them before crossing the event horizon. The complexity of Hawking Radiation is also noted, indicating that understanding black hole radiation involves intricate physics. Overall, the nature of radiation from black holes differs significantly from that of regular stars.
petrushkagoogol
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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 infrared ranges. Is this so ?
 
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petrushkagoogol said:
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 infrared ranges. Is this so ?
Black holes do not radiate in the way you seem to think. Deducing the frequency of Hawking Radiation apparently is quite complex.
 
petrushkagoogol said:
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 infrared ranges. Is this so ?

phinds said:
Black holes do not radiate in the way you seem to think.

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 identifiedDave
 

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