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Name: Leigh Powers 
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: 1993 - 1999


Question:
My name is Leigh Powers and I am writing a research paper on the Hubble Space telescope. I would like to know any details about how scientists might use the HST to search for black holes.


Replies:
Basically, astronomers hope to detect the radiation that is emitted when matter falls into a black hole. This is supposed to happen via a so-called accretion disk. (try looking that up in your library) In particular, a tell-tale black hole signature would be a strong electron-positron annihilation line at 1022 KeV probably gravitationally red-shifted.

John Hawley



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