Prospects for observing and localizing gravitational-wave transients with advanced LIGO and advanced virgo
We present a possible observing scenario for the Advanced LIGO and Advanced Virgo gravitational-wave detectors over the next decade, with the intention of providing information to the astronomy community to facilitate planning for multi-messenger astronomy with gravitational waves. We determine the expected sensitivity of the network to transient gravitational-wave signals, and study the capability of the network to determine the sky location of the source. We report our findings for gravitational-wave transients, with particular focus on gravitational-wave signals from the inspiral of binary neutron-star systems, which are considered the most promising for multi-messenger astronomy. The ability to localize the sources of the detected signals depends on the geographical distribution of the detectors and their relative sensitivity, and 90% credible regions can be as large as thousands of square degrees when only two sensitive detectors are operational. Determining the sky position of a significant fraction of detected signals to areas of 5 deg2 to 20 deg2 will require at least three detectors of sensitivity within a factor of ∼ 2 of each other and with a broad frequency bandwidth. Should the third LIGO detector be relocated to India as expected, a significant fraction of gravitational-wave signals will be localized to a few square degrees by gravitational-wave observations alone.
Abbott, B.; Abbott, R.; Abernathy, M.; Adhikari, R.; Anderson, S.; Arai, K.; Araya, M.; Barayoga, J.; Barish, B.; Berger, B.; Billingsley, G.; Blackburn, J.; Bork, R.; Brooks, A.; Cahillane, C.; Callister, T.; Cepeda, C.; Chakraborty, R.; Chalermsongsak, T.; Couvares, P.; Coyne, D.; Dergachev, V.; Drever, R.; Ehrens, P.; Etzel, T.; Gossan, S.; Gushwa, K.; Gustafson, E.; Hall, E.; Heptonstall, A.; Hodge, K.; Isi, M.; Kanner, J.; Kells, W.; Kondrashov, V.; Korth, W.; Kozak, D.; Lazzarini, A.; Li, T.; Mageswaran, M.; Maros, E.; Martynov, D.; Marx, J.; McIntyre, G.; Meshkov, S.; Pedraza, M.; Perreca, A.; Price, L.; and Quintero, E., "Prospects for observing and localizing gravitational-wave transients with advanced LIGO and advanced virgo" (2016). Living Reviews in Relativity 19(1): 1-39. Faculty Publications. Paper 293.
Living Reviews in Relativity