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Aggarwal, N; Aiello, L; Appert, S; Astone, P; Bassiri, R; Batch, J C; Bisht, A; Bock, O; Bonnand, R; Bradaschia, C; Brady, P R; Brau, J E; Brinkmann, M; Casentini, C; Cella, G; Cerretani, G; Cheng, H-P; Ciani, G; Ciolfi, R; Coccia, E; Countryman, S T; Cowan, E E; Coyne, D C; Dave, I; Del Pozzo, W; De Pietri, R; de Varona, O; Di Giovanni, M; Edo, T B; Etzel, T; Favata, M; Fejer, M M; Font, J A; Fries, E M; Gair, J R; Gupta, M K; Hannuksela, O A; Hello, P; Hinderer, T; Hu, Y M; Indik, N; Jaranowski, P; Kamai, B; Kang, G; Kasprzack, M; Khalili, F Y; Khazanov, E A; Levin, Y; Losurdo, G; Macleod, D M; Magaña Hernandez, I; Magaña-Sandoval, F; Markosyan, A S; Martin, I W; Martynov, D V; Massera, E; McWilliams, S T; Meacher, D; Moore, C J; Napier, K; Noack, A; North, C; Overmier, H; Paoli, A; Pascucci, D; Pasqualetti, A; Pedraza, M; Pfeiffer, H P; Poe, M; Prestegard, T; Principe, M; Qi, H; Rapagnani, P; Regimbau, T; Rieger, S; Robertson, N A; Rutins, G; Schönbeck, A; Scott, J; Shapiro, B; Singer, L P; Spencer, A P; Strain, K A; Stuver, A L; Tokmakov, K V; Tornasi, Z; Töyrä, D; Ugolini, D; Valdes, G; van der Schaaf, L; van Heijningen, J V; Vyatchanin, S P; Wessel, E K; Wilken, D; Williams, R D; Willis, J L; Yang, L; Zelenova, T; Zhang, M; Zhu, X J
Physical review letters, 10/2017, Letnik: 119, Številka: 16Journal Article, Web Resource
On August 17, 2017 at 12∶41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral. The signal, GW170817, was detected with a combined signal-to-noise ratio of 32.4 and a false-alarm-rate estimate of less than one per 8.0×10^{4} years. We infer the component masses of the binary to be between 0.86 and 2.26 M_{⊙}, in agreement with masses of known neutron stars. Restricting the component spins to the range inferred in binary neutron stars, we find the component masses to be in the range 1.17-1.60 M_{⊙}, with the total mass of the system 2.74_{-0.01}^{+0.04}M_{⊙}. The source was localized within a sky region of 28 deg^{2} (90% probability) and had a luminosity distance of 40_{-14}^{+8} Mpc, the closest and most precisely localized gravitational-wave signal yet. The association with the γ-ray burst GRB 170817A, detected by Fermi-GBM 1.7 s after the coalescence, corroborates the hypothesis of a neutron star merger and provides the first direct evidence of a link between these mergers and short γ-ray bursts. Subsequent identification of transient counterparts across the electromagnetic spectrum in the same location further supports the interpretation of this event as a neutron star merger. This unprecedented joint gravitational and electromagnetic observation provides insight into astrophysics, dense matter, gravitation, and cosmology.
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