In which wavelength range is material falling into stellar-mass black holes most likely to be detected?

Name: In which wavelength range is material falling into stellar-mass black holes most likely to be detected?
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Quizplus · Accepted Answer

Material falling into stellar-mass black holes emits X-rays due to the high temperatures and strong magnetic fields involved in the process. Therefore, X-ray observations are the most suitable for detecting accretion disks around black holes.

In Which Wavelength Range Is Material Falling into Stellar-Mass Black