- #1
JeffOCA
- 48
- 0
Hello,
When you look at the accretion disk around NGC 4261 (see here), you can read that the dark, dusty disk represents a cold outer region which extends inwards to an ultra-hot accretion disk with a few hundred million miles from the suspected black hole.
So, from the outside, you have successively a bright ring, then a dark dusty ring and "an ultra-hot accretion disk" very close to the center black hole itself.
My question : due to the ultra-hot temperature in the accretion disk, the dark material (dust) is extremely heated and, so, should radiate in a very bright way (UV and/or X-rays). Why not ?
Regards
JF
When you look at the accretion disk around NGC 4261 (see here), you can read that the dark, dusty disk represents a cold outer region which extends inwards to an ultra-hot accretion disk with a few hundred million miles from the suspected black hole.
So, from the outside, you have successively a bright ring, then a dark dusty ring and "an ultra-hot accretion disk" very close to the center black hole itself.
My question : due to the ultra-hot temperature in the accretion disk, the dark material (dust) is extremely heated and, so, should radiate in a very bright way (UV and/or X-rays). Why not ?
Regards
JF
