TY - JOUR
T1 - Sub-threshold Binary Neutron Star Search in Advanced LIGO's First Observing Run
AU - Magee, Ryan
AU - Fong, Heather
AU - Caudill, Sarah
AU - Messick, Cody
AU - Cannon, Kipp
AU - Godwin, Patrick
AU - Hanna, Chad
AU - Kapadia, Shasvath
AU - Meacher, Duncan
AU - Mohite, Siddharth R.
AU - Mukherjee, Debnandini
AU - Pace, Alexander
AU - Sachdev, Surabhi
AU - Shikauchi, Minori
AU - Singer, Leo
N1 - Publisher Copyright:
© 2019 Chinese Physics C. All rights reserved.
PY - 2019/6/10
Y1 - 2019/6/10
N2 - We present a search for gravitational waves from double neutron star binaries inspirals in Advanced Laser Interferometer Gravitational-Wave Observatorys (LIGOs) first observing run. The search considers a narrow range of binary chirp masses motivated by the population of known double neutron-star binaries in the nearby universe. This search differs from previously published results by providing the most sensitive published survey of neutron stars in Advanced LIGOs first observing run within this narrow mass range, and also including times when only one of the two LIGO detectors was in operation in the analysis. The search was sensitive to binary neutron star (BNS) inspirals to an average distance of ∼85 Mpc over 93.2 days. We do not identify any unambiguous gravitational wave signals in our sample of 103 sub-threshold candidates with false-alarm rates of less than one per day. However, given the expected BNS merger rate of R ≈ 100-4000 Gpc-3 yr-1, we expect O(1) gravitational-wave events within our candidate list. This suggests the possibility that one or more of these candidates is in fact a BNS merger. Although the contamination fraction in our candidate list is ∼99%, it might be possible to correlate these events with other messengers to identify a potential multi-messenger signal. We provide an online candidate list with the times and sky locations for all events in order to enable multi-messenger searches.
AB - We present a search for gravitational waves from double neutron star binaries inspirals in Advanced Laser Interferometer Gravitational-Wave Observatorys (LIGOs) first observing run. The search considers a narrow range of binary chirp masses motivated by the population of known double neutron-star binaries in the nearby universe. This search differs from previously published results by providing the most sensitive published survey of neutron stars in Advanced LIGOs first observing run within this narrow mass range, and also including times when only one of the two LIGO detectors was in operation in the analysis. The search was sensitive to binary neutron star (BNS) inspirals to an average distance of ∼85 Mpc over 93.2 days. We do not identify any unambiguous gravitational wave signals in our sample of 103 sub-threshold candidates with false-alarm rates of less than one per day. However, given the expected BNS merger rate of R ≈ 100-4000 Gpc-3 yr-1, we expect O(1) gravitational-wave events within our candidate list. This suggests the possibility that one or more of these candidates is in fact a BNS merger. Although the contamination fraction in our candidate list is ∼99%, it might be possible to correlate these events with other messengers to identify a potential multi-messenger signal. We provide an online candidate list with the times and sky locations for all events in order to enable multi-messenger searches.
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U2 - 10.3847/2041-8213/ab20cf
DO - 10.3847/2041-8213/ab20cf
M3 - Article
AN - SCOPUS:85069499080
SN - 2041-8205
VL - 878
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 1
M1 - L17
ER -