Hello, I am a bit confused on the relation between the Hawking effect(radiation) and the Unruh effect. What I understood with my little knowledge is that the Hawking temperature is the temperature that is emitted at the event horizon of a black hole as measured by an observer at infinite spatial distance from the black hole. So, since the Unruh effect is observer-dependent, I see an analogy of the Hawking-Unruh effects with the effect of gravitational time dilation. In gravitational time dilation, the proper time(an invariant) between two events is different from the coordinate time(observer-dependent) in the same way that the Hawking temperature is observer independent (as this paper explains: https://link.springer.com/content/pdf/10.1007/JHEP10(2016)161.pdf ) and the Unruh effect is observer-dependent. (it's like the Hawking temperature is the "proper temperature") So, is this right? Also, how are the two effects(Hawking and Unruh) exactly related? [the wikipedia article might help: https://en.wikipedia.org/wiki/Hawking_radiation --go to the section "emission process"--I don't really get the idea completely though] Extra: If my explanation of the Hawking temperature is correct(i.e. the temperature emitted at the horizon as measured by an observer at infinity) and since it is finite, wouldn't the background temperature that we should measure be huge since we are far away from any black hole and there is a huge number of black holes in the Universe? Thanks in advance.