Search for Gravitational Waves from a Long-lived Remnant of the Binary Neutron Star Merger GW170817

verfasst von
The LIGO Scientific Collaboration , Virgo Collaboration , B. P. Abbott, R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, B. Agarwal, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, B. Allen, G. Allen, A. Allocca, M. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud, S. Ascenzi, G. Ashton, M. Ast, S. L. Danilishin, K. Danzmann, M. Heurs, A. Hreibi, H. Lück, D. Steinmeyer, H. Vahlbruch, L.-w. Wei, D. Wilken, B. Willke, H. Wittel, Maximilian Bensch, Sukanta Bose, D. D. Brown, Y. B. Chen, Manuela Hanke, J. Hennig, R. N. Lang, H. K. Lee, H. M. Lee, H. W. Lee, X. Li, T. Nguyen, J. R. Sanders, Patricia Schmidt, L. Sun, Y. F. Wang, D. S. Wu, L. Zhang, X. J. Zhu, Minchuan Zhou, Gerald Bergmann, Aparna Bisht, Nina Bode, P. Booker, Marc Brinkmann, M. Cabero, Timo Denker, O. de Varona, S. Hochheim, T. Dent, S. Doravari, J. Junker, W. Kastaun, Stefan Kaufer, R. Kirchhoff, Patrick Koch, N. Koper, Kai S. Karvinen, S. Khan, N. Koper, S. M. Köhlenbeck, Volker Kringel, G. Kuehn, S. Leavey, J. Lehmann, M. Leonardi, James Lough, Moritz Mehmet, Arunava Mukherjee, D. Mendoza-Gandara, M. Nery, F. Ohme, P. Oppermann, Emil Schreiber, B. W. Schulte, Dirk Schütte, Ajeet Singh Singh, Fabian Thies, Thomas Theeg, B. Steltner, M. Steinke, Y. Setyawati, Michael Weinert, F. Wellmann, Peter Weßels, Maximilian H. Wimmer, W. Winkler, J. Woehler, S. J. Zhu
Abstract

One unanswered question about the binary neutron star coalescence GW170817 is the nature of its post-merger remnant. A previous search for post-merger gravitational waves targeted high-frequency signals from a possible neutron star remnant with a maximum signal duration of 500 s. Here, we revisit the neutron star remnant scenario and focus on longer signal durations, up until the end of the second Advanced LIGO-Virgo observing run, which was 8.5 days after the coalescence of GW170817. The main physical scenario for this emission is the power-law spindown of a massive magnetar-like remnant. We use four independent search algorithms with varying degrees of restrictiveness on the signal waveform and different ways of dealing with noise artefacts. In agreement with theoretical estimates, we find no significant signal candidates. Through simulated signals, we quantify that with the current detector sensitivity, nowhere in the studied parameter space are we sensitive to a signal from more than 1 Mpc away, compared to the actual distance of 40 Mpc. However, this study serves as a prototype for post-merger analyses in future observing runs with expected higher sensitivity.

Organisationseinheit(en)
Institut für Gravitationsphysik
QUEST Leibniz Forschungsschule
QuantumFrontiers
Externe Organisation(en)
Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
Washington State University Pullman
Inter-University Centre for Astronomy and Astrophysics India
University of Adelaide
LIGO Laboratory
Inje University
California Institute of Technology (Caltech)
Massachusetts Institute of Technology (MIT)
Radboud Universität Nijmegen (RU)
University of Melbourne
University of Texas Rio Grande Valley
Monash University
Northwestern University
Typ
Artikel
Journal
Astrophysical Journal
Band
875
Anzahl der Seiten
19
ISSN
0004-637X
Publikationsdatum
25.04.2019
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Astronomie und Astrophysik, Astronomie und Planetologie
Elektronische Version(en)
https://doi.org/10.48550/arXiv.1810.02581 (Zugang: Offen)
https://doi.org/10.3847/1538-4357/ab0f3d (Zugang: Geschlossen)