scholarly journals On the gravitational wave background from compact binary coalescences in the band of ground-based interferometers

2013 ◽  
Vol 431 (1) ◽  
pp. 882-899 ◽  
Author(s):  
X.-J. Zhu ◽  
E. J. Howell ◽  
D. G. Blair ◽  
Z.-H. Zhu
Keyword(s):  
Gravitational Wave ◽  
Compact Binary ◽  
Gravitational Wave Background

scholarly journals GW170817: Implications for the Stochastic Gravitational-Wave Background from Compact Binary Coalescences

2018 ◽  
Vol 120 (9) ◽  
Author(s):  
B. P. Abbott ◽  
R. Abbott ◽  
T. D. Abbott ◽  
F. Acernese ◽  
K. Ackley ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
Compact Binary ◽  
Gravitational Wave Background

scholarly journals Multifrequency Gravitational Wave Background From Continuous Sources

2021 ◽  
Author(s):  
C Sivaram ◽  
Arun Kenath
Keyword(s):  
Gravitational Wave ◽  
Gravitational Waves ◽  
Mass Range ◽  
Compact Objects ◽  
Compact Binary ◽  
Transient Events ◽  
Stellar Interiors ◽  
Gravitational Wave Background ◽  
Hubble Time ◽  
Thermal Background

Gravitational waves have been detected in the past few years from several transient events such as merging stellar mass black holes, binary neutron stars, etc. These waves have frequencies in a band ranging from a few hundred hertz to around a kilohertz to which LIGO type instruments are sensitive. LISA would be sensitive to much lower range of frequencies from SMBH mergers. Apart from these cataclysmic burst events, there are innumerable sources of radiation which are continuously emitting gravitational waves of all frequencies. These include a whole mass range of compact binary and isolated compact objects as well as close planetary stellar entities. In this work, quantitative estimates are made of the gravitational wave background produced in typical frequency ranges from such sources emitting over a Hubble time and the fluctuations in the h values measured in the usual devices. Also estimates are made of the high frequency thermal background gravitational radiation from hot stellar interiors and newly formed compact objects.

scholarly journals Search for Lensing Signatures in the Gravitational-Wave Observations from the First Half of LIGO–Virgo’s Third Observing Run

2021 ◽  
Vol 923 (1) ◽  
pp. 14
Author(s):  
R. Abbott ◽  
T. D. Abbott ◽  
S. Abraham ◽  
F. Acernese ◽  
K. Ackley ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
Gravitational Lensing ◽  
High Redshift ◽  
High Mass ◽  
Sufficient Evidence ◽  
Multiple Image ◽  
Compact Binary ◽  
Strong Lensing ◽  
Merger Rate ◽  
Gravitational Wave Background

Abstract We search for signatures of gravitational lensing in the gravitational-wave signals from compact binary coalescences detected by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) and Advanced Virgo during O3a, the first half of their third observing run. We study: (1) the expected rate of lensing at current detector sensitivity and the implications of a non-observation of strong lensing or a stochastic gravitational-wave background on the merger-rate density at high redshift; (2) how the interpretation of individual high-mass events would change if they were found to be lensed; (3) the possibility of multiple images due to strong lensing by galaxies or galaxy clusters; and (4) possible wave-optics effects due to point-mass microlenses. Several pairs of signals in the multiple-image analysis show similar parameters and, in this sense, are nominally consistent with the strong lensing hypothesis. However, taking into account population priors, selection effects, and the prior odds against lensing, these events do not provide sufficient evidence for lensing. Overall, we find no compelling evidence for lensing in the observed gravitational-wave signals from any of these analyses.

scholarly journals Insights into searches for anisotropies in the nanohertz gravitational-wave background

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Yacine Ali-Haïmoud ◽  
Tristan L. Smith ◽  
Chiara M. F. Mingarelli
Keyword(s):  
Gravitational Wave ◽  
Gravitational Wave Background

scholarly journals Stochastic gravitational wave background from exoplanets

2015 ◽  
Vol 91 (12) ◽  
Author(s):  
Anirban Ain ◽  
Shilpa Kastha ◽  
Sanjit Mitra
Keyword(s):  
Gravitational Wave ◽  
Gravitational Wave Background

scholarly journals Cherenkov radiation in a gravitational-wave background

2001 ◽  
Vol 18 (11) ◽  
pp. 2217-2232 ◽  
Author(s):  
Alexander B Balakin ◽  
Richard Kerner ◽  
José P S Lemos
Keyword(s):  
Gravitational Wave ◽  
Cherenkov Radiation ◽  
Gravitational Wave Background
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