LIGO 2013 - Мрачные предсказания для ОТО Steve Carlip - University of California, Davis physics
http://groups.google.ru/group/sci.astro/msg/44e6234e59a97494?dmode=source&hl=ruhttp://usenet.mail2web.com/cgi-bin/dnewsweb.exe?cmd=article&group=sci.astro&item=528212&utag=Если в 2013 году усовершенствованный LIGO, в 1000 раз более чувствительный чем современный LIGO, не обнаружит никаких гравитационных волн, то это будет означать, что наши теперешние представления дико ошибочны...
Steve Carlip
University of California, Davis physics
http://www.physics.ucdavis.edu/Text/carlip_steve.html Steven Carlip
Professor, Physics
One Shields Avenue
Physics Department
Davis, CA 95616
Office: 437 Phy/Geo
Phone: +1 (530) 752-8786
Fax: +1 (530) 752-4717
Email:
Research Interests
Quantum gravity, string theory, low dimensional quantum field theory; black holes; geometry and topology in quantum theory.
Subject: Re: LIGO Progress
Date: Sat, 25 Mar 2006 23:41:12 +0000 (UTC)
From:
Newsgroups: sci.astro
Mike <
M.GS...@verizon.net> wrote:
> Does anyone have any new information on anything new being done to the LIGO
> detector?
LIGO has only quite recently reached its design sensitivity. A year-long
"science run" began in mid-November (it will actually run about a year and
a half to collect a full year's data).
> After hearing the LIGO gravity wave detector was not sensitive enough to
> detect gravity waves what are the steps being done to fix it?
It's not at all clear that "the LIGO gravity wave detector was not sensitive
enough to detect gravity waves." The basic problem is that detectability
depends on how far away a source is, and we don't have good estimates of
-- for instance -- how many neutron star binaries there are in the galaxy.
It is still quite possible that interesting things will be seen in the
current run.
> Are they planning to rip the guts out of it?
There are well-developed plans for "Advanced LIGO," with many elements
now in the development and testing stage. The sensitivity will increase
by a factor of ten. This means that Advanced LIGO will be able to see
sources in 1000 times the spatial volume that LIGO can. Current plans
are for Advanced LIGO to start observations in 2013.
If Advanced LIGO fails to see anything, that failure will in itself be
a major result -- it will be a demonstration that our current understanding
of gravitational radiation is wildly wrong. If this is the case, it's
worth knowing. If it does see gravitational radiation, it will allow us
to look at processes we cannot otherwise see at all -- for example, the
merger of a pair of black holes.
