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Article #3635

Re: A picture of a black hole?

#3635
From: David Palmer
Date: Mon, 25 Jan 1993 21:32
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   I think the photo everyone is referring to is one the HST shot late
last year. It is not a picture "of" a black hole--you cannot (directly)
photograph something that does not emit or reflect light--but a photo of the
EFFECTS of a suspected black hole. The photo is of the nucleus of galaxy
M51. The photo shows a large dark X in the center of the nucleus. Literally,
X marks the spot! The dark bands are probably light-absorbing dust rings
that orbit a black hole with a mass of about 2 million suns. The photo
and a short article appear in the Sept 1992 issue of Astronomy, p 18.
It is important to remember that the existence of black holes has not
been positively confirmed. However, there is an increasing number of
phenomina (like this photo) that are very strong evidence of black
holes. As far as I know, nobody has posited alternate explainations of
these phenomena.


-- 
              Dave Palmer             dpalmer@csulb.edu

********************I finally found the perfect woman,*********************** 
*****************but she was looking for the perfect man*********************
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From: dpalmer@csulb.edu (David Palmer)
Newsgroups: sci.astro
Subject: Re: A picture of a black hole?
Message-ID: <C1FIIq.5Dx@csulb.edu>
Date: 25 Jan 93 21:32:49 GMT
Article-I.D.: csulb.C1FIIq.5Dx
Organization: Cal State Long Beach
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