The accretion disk of a black hole is typically very hot.What kind of telescope would we use to observe it at its strongest wavelength?
A) a ground-based X-ray telescope
B) a space-based X-ray telescope
C) a ground-based gamma-ray telescope
D) a space-based radio telescope
E) None of these choices are correct.

Question

Quizplus · Accepted Answer

The accretion disk of a black hole emits strongly in the X-ray part of the spectrum, and since Earth's atmosphere absorbs X-rays, a space-based X-ray telescope is required to observe it.

The Accretion Disk of a Black Hole Is Typically Very