GLAST / Fermi and gamma-ray bursters |
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GLAST / Fermi and gamma-ray bursters |
 Jan 24 2009, 08:22 PM
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 Senior Member  Group: Members Posts: 1633 Joined: 5-March 05 From: Boulder, CO Member No.: 184  |
Just wondering if there's any discussion about new gamma-ray observations and what they may say about high-energy physics. I've heard bits and pieces about how gamma-ray bursters can be used to probe the nature of quantum gravity in terms of a vacuum refractive index. This has to do with delay times in gamma-ray burst photons according to wavelength.
Secondly, I've heard rumors about some type of gamma-ray burst measurements that could contradict the dark-energy hypothesis (perhaps a distance-luminosity relation measurement). Perhaps the new Fermi space observatory will help with some fresh observations. Steve P.S. And here's another unmanned yet non-planetary thread  After posting this I see the mainly prelaunch GLAST thread from a few months back.
-------------------- Steve [ my home page and planetary maps page ]
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| Guest_PhilCo126_* |
Feb 20 2009, 07:48 AM
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Our newspapers have a story about FERMI observing the "biggest explosion" ever in the Universe at 12 Billion light years away with the force of 9000 Black Holes...
Observation was made in September 2008 http://www.nasa.gov/mission_pages/GLAST/main/index.html |
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Feb 20 2009, 09:44 PM
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 Member Group: Members Posts: 115 Joined: 8-January 05 From: Austin | Texas Member No.: 138 |
QUOTE (PhilCo126 @ Feb 20 2009, 07:48 AM)  Our newspapers have a story about FERMI observing the "biggest explosion" ever in the Universe at 12 Billion light years away with the force of 9000 Black Holes... Observation was made in September 2008 http://www.nasa.gov/mission_pages/GLAST/main/index.html They caught a good picture of the afterglow -- this might deserve its own thread.
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Feb 21 2009, 02:15 AM
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 Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
Just had a thought -- maybe GRBs are generated when our Universe's 'brane touches another 'brane? I mean, membrane theory proposes the possibility that the Big Bang was generated when our 'brane had a full-on collision with another. Maybe GRBs are the result of small, glancing contacts?
Just a thought... -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Feb 21 2009, 04:09 PM
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Senior Member Group: Members Posts: 1633 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
I see they noticed a 16.5 second delay in the burst depending on the photon energy, so this could be more evidence of vacuum effects?
-------------------- Steve [ my home page and planetary maps page ]
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Feb 24 2009, 07:27 PM
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 Member Group: Members Posts: 646 Joined: 23-December 05 From: Forest of Dean Member No.: 617 |
QUOTE (dvandorn @ Feb 21 2009, 02:15 AM) Just had a thought -- oDoug, this might be of interest. (It just popped up in a simple search; I'm not remotely qualified to assess it's credibility.) -------------------- --
Viva software libre! |
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