Editing Astronomical radio source (section)

===Primordial black holes===
According to the Big Bang Model, during the first few moments after the Big Bang, pressure and temperature were extremely great. Under these conditions, simple fluctuations in the density of matter may have resulted in local regions dense enough to create black holes. Although most regions of high density would be quickly dispersed by the expansion of the universe, a primordial black hole would be stable, persisting to the present.

One goal of [[Astropulse]] is to detect postulated mini black holes that might be evaporating due to "[[Hawking radiation]]". Such mini black holes are postulated<ref>{{cite web |url=http://cerncourier.com/cws/article/cern/29199 |title=The case for mini black holes |publisher=Cern Courier |date=2004-11-24 |access-date=2010-06-23 |archive-date=2011-05-20 |archive-url=https://web.archive.org/web/20110520115337/http://cerncourier.com/cws/article/cern/29199 |url-status=live }}</ref> to have been created during the Big Bang, unlike currently known black holes. [[Martin Rees]] has theorized that a black hole, exploding via Hawking radiation, might produce a signal that's detectable in the radio.  The Astropulse project hopes that this evaporation would produce radio waves that Astropulse can detect. The evaporation wouldn't create radio waves directly. Instead, it would create an expanding fireball of high-energy [[gamma rays]] and particles. This fireball would interact with the surrounding magnetic field, pushing it out and generating radio waves.<ref>{{cite web |url=http://setiathome.berkeley.edu/ap_prbh.php |title=Primordial Black Holes |access-date=2010-06-23 |archive-date=2010-11-06 |archive-url=https://web.archive.org/web/20101106070600/http://setiathome.berkeley.edu/ap_prbh.php |url-status=live }}</ref>