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 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 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

scholarly journals Position and frequency shifts induced by massive modes of the gravitational wave background in alternative gravity

2009 ◽  
Vol 79 (10) ◽  
Author(s):  
Stefano Bellucci ◽  
Salvatore Capozziello ◽  
Mariafelicia De Laurentis ◽  
Valerio Faraoni
Keyword(s):  
Gravitational Wave ◽  
Frequency Shifts ◽  
Gravitational Wave Background ◽  
Alternative Gravity

scholarly journals GW150914: Implications for the Stochastic Gravitational-Wave Background from Binary Black Holes

2016 ◽  
Vol 116 (13) ◽  
Author(s):  
B. P. Abbott ◽  
R. Abbott ◽  
T. D. Abbott ◽  
M. R. Abernathy ◽  
F. Acernese ◽  
...  
Keyword(s):  
Black Holes ◽  
Gravitational Wave ◽  
Binary Black Holes ◽  
Gravitational Wave Background

scholarly journals Searching for cross-correlation between stochastic gravitational-wave background and galaxy number counts

2020 ◽  
Vol 500 (2) ◽  
pp. 1666-1672
Author(s):  
Kate Z Yang ◽  
Vuk Mandic ◽  
Claudia Scarlata ◽  
Sharan Banagiri
Keyword(s):  
Gravitational Wave ◽  
Cross Correlation ◽  
Sloan Digital Sky Survey ◽  
Number Count ◽  
Frequency Bands ◽  
Galaxy Count ◽  
Harmonic Decomposition ◽  
Number Counts ◽  
Gravitational Wave Background ◽  
The Universe

ABSTRACT Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Advanced Virgo have recently published the upper limit measurement of persistent directional stochastic gravitational-wave background (SGWB) based on data from their first and second observing runs. In this paper, we investigate whether a correlation exists between this maximal likelihood SGWB map and the electromagnetic (EM) tracers of matter structure in the Universe, such as galaxy number counts. The method we develop will improve the sensitivity of future searches for anisotropy in the SGWB and expand the use of SGWB anisotropy to probe the formation of structure in the Universe. In order to compute the cross-correlation, we used the spherical harmonic decomposition of SGWB in multiple frequency bands and converted them into pixel-based sky maps in healpix basis. For the EM part, we use the Sloan Digital Sky Survey alaxy catalogue and form healpix sky maps of galaxy number counts at the same angular resolution as the SGWB maps. We compute the pixel-based coherence between these SGWB and galaxy count maps. After evaluating our results in different SGWB frequency bands and in different galaxy redshift bins, we conclude that the coherence between the SGWB and galaxy number count maps is dominated by the null measurement noise in the SGWB maps, and therefore not statistically significant. We expect the results of this analysis to be significantly improved by using the more sensitive upcoming SGWB measurements based on the third observing run of Advanced LIGO and Advanced Virgo.

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