Recent content by zviz

It is said that accretion disk around compact objects like black hole can convert up to 40% of the mass of an infalling material into energy. This means, to my understanding, that if we throw 1kg of matter onto a BH through an accretion disk, during the accretion 0.4kg worth of energy in the...

I have a question about the temperature of HII gas. According to Table 1.3 in Draine's book (physics of the interstellar and intergalactic medium) this temperature is T~10^4 K. I get a similar value by using the Saha equation for a hydrogen gas. However, a naive estimate of the same temperature...