LIGO, High Gear Science Run |
LIGO, High Gear Science Run |
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Member ![]() ![]() ![]() Group: Members Posts: 624 Joined: 10-August 05 Member No.: 460 ![]() |
http://www.spaceref.com/news/viewpr.html?pid=19142
QUOTE ST. LOUIS, Mo. -- The quest to detect and study gravitational waves with the NSF-funded Laser Interferometer Gravitational-Wave Observatory (LIGO) is now in the fourth month of its first sustained science run since achieving its promised design sensitivity, project personnel announced at the annual meeting of the American Association for the Advancement of Science (AAAS). ... Now that the LIGO is sensitive enough to detect changes in distance a mere thousandth the diameter of a proton, Marx adds, the science return should be even greater. Recent results from the Swift satellite pinpointing the location of short gamma-ray bursts (GRBs) have also heightened astronomers' interest in the results from LIGO's current observational run. That level of sensitivity is, in my opinion, the most incredible technical achievement since the VLA. The very long gamma ray associated with supernova/hypernova 1996aj should also be of great interest. |
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![]() Member ![]() ![]() ![]() Group: Members Posts: 723 Joined: 13-June 04 Member No.: 82 ![]() |
An interesting possible second binary black hole merger, from GW150914: First results from the search for binary black hole coalescence with Advanced LIGO
QUOTE The second most significant candidate event in the observation period (referred to as LVT151012) was reported on October 12, 2015 at 09:54:43 UTC with a combined matched filter SNR of 9:6. The search reported a false alarm rate of 1 per 2.3 years and a corresponding false alarm probability of 0.02 for this candidate event. Detector characterization studies have not identified an instrumental or environmental artifact as causing this candidate event. However, its false alarm probability is not sufficiently low to confidently claim this candidate event as a signal. Detailed waveform analysis of this candidate event indicates that it is also a binary black hole merger with source frame masses 23 MSun and 13 MSun, if it is of astrophysical origin.
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