Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21743223b&link_type=abstract
American Astronomical Society, AAS Meeting #217, #432.23; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
1
Scientific paper
The last decade has seen first-generation interferometeric gravitational-wave (GW) detectors built, commissioned and operated at design sensitivity for extended periods. This has demonstrated the feasibility of such large-scale instruments. Second-generation GW detectors, designed to have 10x improvement in sensitivity yielding a 1000x fold increase in the volume of searchable space, are now under construction. Within the next decade we are expecting to witness two revolutionary developments in GW astronomy: (1) the first detections of gravitational waves, and (2) detection of the electromagnetic (EM) counterparts of gravitational-wave sources, e.g. gamma-ray bursts and supernovae. The information gathered from such combined GW-EM observations is expected to tell us much more about these extreme energy events than either observation by itself could hope to. Effective sky-localization of GW observations is essential for pairing such observations with EM counterparts. As with any basic triangulation, this is best served by a large and broad network of sensitive ground-based detectors. An exciting proposal to extend the 2nd generation GW network very much sooner than anticipated has recently been raised. This proposal, to relocate one of the Advanced LIGO detectors from the US to Western Australia (LIGO-Australia), has such convincing scientific merit that it has progressed from conception to formal approval by the NSF (subject to certain conditions) in a little over 12 months. LIGO-Australia will add to the detector network the longest baseline, break the plane degeneracy of the detectors in the northern Hemisphere and therefore improve the network angular resolution dramatically. This poster will report on the status of this proposal and will discuss the scientific benefits of LIGO-Australia.
Brooks Aidan F.
Wen Linqing
Whitcomb Stanley
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