scholarly journals Constraints on individual supermassive black hole binaries from pulsar timing array limits on continuous gravitational waves

2016 ◽  
Vol 459 (2) ◽  
pp. 1737-1744 ◽  
Author(s):  
Katelin Schutz ◽  
Chung-Pei Ma
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Black Hole Binaries ◽  
Supermassive Black Hole ◽  
Pulsar Timing ◽  
Pulsar Timing Array

scholarly journals European Pulsar Timing Array limits on continuous gravitational waves from individual supermassive black hole binaries

2015 ◽  
Vol 455 (2) ◽  
pp. 1665-1679 ◽  
Author(s):  
S. Babak ◽  
A. Petiteau ◽  
A. Sesana ◽  
P. Brem ◽  
P. A. Rosado ◽  
...  
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Black Hole Binaries ◽  
Supermassive Black Hole ◽  
Pulsar Timing ◽  
Pulsar Timing Array

scholarly journals Limits on First Structure Formation from Pulsar Timing

2015 ◽  
Vol 11 (A29B) ◽  
pp. 329-335
Author(s):  
R. M. Shannon
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Galaxy Mergers ◽  
Host Galaxies ◽  
Arrival Times ◽  
Black Hole Binaries ◽  
Supermassive Black Hole ◽  
Pulsar Timing ◽  
Formation And Evolution ◽  
Promising Source

AbstractBy monitoring the arrival times from millisecond pulsars for years to decades, it is possible to search for, or place limits on, nanohertz frequency gravitational radiation. The most promising source of gravitational waves in this band is a stochastic background emitted from a population of supermassive black hole binaries. As these binaries are the direct product of of galaxy mergers and the properties of the SMBHs correlated strongly with their host galaxies, the gravitational wave emission of the binaries can be used to study how galaxies evolve. Here I discuss how pulsar timing can be used to search for gravitational waves, and how limits on the strength of the background are being used to challenge models of supermassive black hole formation and evolution.

scholarly journals Multi-messenger Approaches to Supermassive Black Hole Binary Detection and Parameter Estimation: Implications for Nanohertz Gravitational Wave Searches with Pulsar Timing Arrays

2021 ◽  
Vol 921 (2) ◽  
pp. 178
Author(s):  
Tingting Liu ◽  
Sarah J. Vigeland
Keyword(s):  
Black Hole ◽  
Parameter Estimation ◽  
Bayes Factor ◽  
Data Sets ◽  
Galaxy Mergers ◽  
Black Hole Binaries ◽  
Supermassive Black Hole ◽  
Pulsar Timing ◽  
Order Of Magnitude ◽  
Pulsar Timing Array

Abstract Pulsar timing array (PTA) experiments are becoming increasingly sensitive to gravitational waves (GWs) in the nanohertz frequency range, where the main astrophysical sources are supermassive black hole binaries (SMBHBs), which are expected to form following galaxy mergers. Some of these individual SMBHBs may power active galactic nuclei, and thus their binary parameters could be obtained electromagnetically, which makes it possible to apply electromagnetic (EM) information to aid the search for a GW signal in PTA data. In this work, we investigate the effects of such an EM-informed search on binary detection and parameter estimation by performing mock data analyses on simulated PTA data sets. We find that by applying EM priors, the Bayes factor of some injected signals with originally marginal or sub-threshold detectability (i.e., Bayes factor ∼1) can increase by a factor of a few to an order of magnitude, and thus an EM-informed targeted search is able to find hints of a signal when an uninformed search fails to find any. Additionally, by combining EM and GW data, one can achieve an overall improvement in parameter estimation, regardless of the source’s sky location or GW frequency. We discuss the implications for the multi-messenger studies of SMBHBs with PTAs.

scholarly journals Pulsar Timing Residuals Induced by Gravitational Waves from Single Non-evolving Supermassive Black Hole Binaries with Elliptical Orbits

2013 ◽  
Vol 30 (10) ◽  
pp. 100402 ◽  
Author(s):  
Ming-Lei Tong ◽  
Bao-Rong Yan ◽  
Cheng-Shi Zhao ◽  
Dong-Shan Yin ◽  
Shu-Hong Zhao ◽  
...  
Keyword(s):  
Black Hole ◽  
Gravitational Waves ◽  
Black Hole Binaries ◽  
Supermassive Black Hole ◽  
Pulsar Timing ◽  
Elliptical Orbits
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