scholarly journals Comparing gravitational waves from nonprecessing and precessing black hole binaries in the corotating frame

2013 ◽  
Vol 88 (2) ◽  
Author(s):  
L. Pekowsky ◽  
R. O’Shaughnessy ◽  
J. Healy ◽  
D. Shoemaker
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Black Hole Binaries ◽  
Corotating Frame

scholarly journals Constraints on ultra-low-frequency gravitational waves with statistics of pulsar spin-down rates

2019 ◽  
Vol 489 (3) ◽  
pp. 3547-3552
Author(s):  
Hiroki Kumamoto ◽  
Yuya Imasato ◽  
Naoyuki Yonemaru ◽  
Sachiko Kuroyanagi ◽  
Keitaro Takahashi
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Time Derivative ◽  
Low Frequency ◽  
Upper Bounds ◽  
Galactic Centre ◽  
Frequency Range ◽  
Rate Distribution ◽  
Black Hole Binaries ◽  
Supermassive Black Hole

Abstract We probe ultra-low-frequency gravitational waves (GWs) with statistics of spin-down rates of millisecond pulsars (thereafter MSPs) by a method proposed in our previous work. The considered frequency range is 10−12 Hz ≲ fGW ≲ 10−10  Hz . The effect of such low-frequency GWs appears as a bias to spin-down rates that has a quadrupole pattern in the sky. We use the skewness of the spin-down rate distribution and the number of MSPs with negative spin-down rates to search for the bias induced by GWs. Applying this method to 149 MSPs selected from the ATNF pulsar catalogue, we derive upper bounds on the time derivative of the GW amplitudes of $\dot{h} \lt 6.2 \times 10^{-18}~{\rm s}^{-1}$ and $\dot{h} \lt 8.1 \times 10^{-18}~{\rm s}^{-1}$ in the directions of the Galactic Centre and M87, respectively. Approximating the GW amplitude as $\dot{h} \sim 2 \pi f_{\rm GW} h$, the bounds translate into h < 3 × 10−8 and h < 4 × 10−8, respectively, for fGW = 1/(1000 yr). Finally, we give the implications to possible supermassive black hole binaries at these sites.

scholarly journals Model of gravitational waves from precessing black-hole binaries through merger and ringdown

2021 ◽  
Vol 104 (12) ◽  
Author(s):  
Eleanor Hamilton ◽  
Lionel London ◽  
Jonathan E. Thompson ◽  
Edward Fauchon-Jones ◽  
Mark Hannam ◽  
...  
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Black Hole Binaries

scholarly journals Prospects for probing gravitational waves from primordial black hole binaries

2021 ◽  
Vol 104 (8) ◽  
Author(s):  
Oriol Pujolas ◽  
Ville Vaskonen ◽  
Hardi Veermäe
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Primordial Black Hole ◽  
Black Hole Binaries

scholarly journals The NANOGrav 11 yr Data Set: Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries

2019 ◽  
Vol 880 (2) ◽  
pp. 116 ◽  
Author(s):  
K. Aggarwal ◽  
Z. Arzoumanian ◽  
P. T. Baker ◽  
A. Brazier ◽  
M. R. Brinson ◽  
...  
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Data Set ◽  
Black Hole Binaries ◽  
Supermassive Black Hole
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