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- From: Richard.Mathews@West.Sun.COM (Richard M. Mathews)
- Newsgroups: sci.physics
- Subject: Re: hubble and black hole
- Date: 23 Nov 1992 23:30:31 GMT
- Organization: Sunsoft Inc., Los Angeles, CA.
- Lines: 20
- Message-ID: <1erpinINNip9@smaug.West.Sun.COM>
- References: <1elv7lINNikd@bigboote.WPI.EDU> <FRANL.92Nov21141214@draco.centerline.com> <psikr01.722543408@convex>
- NNTP-Posting-Host: astro
- Originator: richard@astro.West.Sun.COM
-
- psikr01@convex.zdv.uni-tuebingen.de (Peter Kretschmar) writes:
-
- >>I want to know why it can't be a really massive neutron star.
-
- >Neutron stars *can't* get very massive. If the evolving rest of a massive
- >star has more than about 1.4 solar masses it will evolve into a black hole.
-
- I must object to this. We have a theory which says that a compact object
- with >1.4 Msun must be a black hole. We find a compact object which
- appears to have such a mass. According to the theory, we conclude that
- it must be a black hole. Then we say that having found a black hole,
- the theory is confirmed. No! You can't use the theory to prove itself.
- All we know is that we have a massive, compact object. If GR is right,
- then it is a black hole. But we have not observed any evidence that an
- event horizon formed, so we really have no idea whether this is what
- GR predicts or if it is some massive, compact object which is a counter
- example proving GR wrong.
-
- Richard M. Mathews Freedom for Lithuania
- Richard.Mathews@West.Sun.COM Laisve!
-