At what wavelength will it radiate the most energy? what part of the spectrum is this in?

Question

if the inner accretion disc around a black hole has a temperature of 1000000 k, at what wavelength will it radiate the most energy? what part of the spectrum is this in?

Answer 1

It is in the X-ray spectrum.

Answer 2

2.898 nm, which is in the X-ray part of the spectrum.

Answer 3

A small side-note to campbelp2002's correct answer:

This is our most reliable evidence for the possible existence and location of a black hole. A HUGE amount of x-ray radiation in a VERY small area of space:)