%0 Journal Article
	%A Petarpa Boonserm and  Tritos Ngampitipan and  Matt Visser
	%D 2013
	%J International Journal of Physical and Mathematical Sciences
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 84, 2013
	%T Spin One Hawking Radiation from Dirty Black Holes
	%U https://publications.waset.org/pdf/9996720
	%V 84
	%X A “clean” black hole is a black hole in vacuum such as the Schwarzschild black hole. However in real physical systems, there are matter fields around a black hole. Such a black hole is called a “dirty black hole”. In this paper, the effect of matter fields on the black hole and the greybody factor is investigated. The results show that matter fields make a black hole smaller. They can increase the potential energy to a black hole to obstruct Hawking radiation to propagate. This causes the greybody factor of a dirty black hole to be less than that of a clean black hole.

	%P 1689 - 1693