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Related papers: A Multimessenger Search for the Supermassive Black…

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We present an analytic model to describe the supermassive black hole binary (SMBHB) merger rate in the Universe with astrophysical observables: galaxy stellar mass function, pair fraction, merger timescale and black hole - host galaxy…

Astrophysics of Galaxies · Physics 2019-07-25 Siyuan Chen , Alberto Sesana , Christopher J. Conselice

Supermassive black holes (SMBHs) reside at the center of every massive galaxy in the local Universe with masses that closely correlate with observations of their host galaxy implying a connected evolutionary history. The population of…

Astrophysics of Galaxies · Physics 2023-06-06 Joseph Simon

We present a comprehensive framework for predicting the detection prospects of supermassive black hole binaries (SMBHBs) by future gravitational wave (GW) observatories, examining both space-borne detectors (LISA, Taiji, TianQin) and…

High Energy Astrophysical Phenomena · Physics 2026-02-09 Katsunori Kusakabe , Yoshiyuki Inoue , Daisuke Toyouchi , Keitaro Takahashi

Supermassive binary black holes (SMBBHs) in galactic centers may radiate gravitational wave (GW) in the nano-Hertz frequency band, which are expected to be detected by pulsar timing arrays (PTAs) in the near future. GW signals from…

Astrophysics of Galaxies · Physics 2020-02-12 Changshuo Yan , Wen Zhao , Youjun Lu

We present results from an all-sky search for continuous gravitational waves from individual supermassive binary black holes using the third data release (DR3) of the Parkes Pulsar Timing Array (PPTA). Even though we recover a…

One of the most promising targets for Pulsar Timing Arrays (PTAs) is identifying an individual supermassive black hole binary (SMBHB) out of the population of binaries theorized to produce a gravitational wave background (GWB). In this…

Instrumentation and Methods for Astrophysics · Physics 2026-04-21 Levi Schult , Polina Petrov , Stephen R. Taylor , Nihan Pol , Nima Laal , Maria Charisi , Chung-Pei Ma

Supermassive black hole binary systems (SMBHBs) emitting gravitational waves may be traced by periodic light curves. We assembled a catalog of 149 such periodic light curves, and using their masses, distances, and periods, predicted the…

Astrophysics of Galaxies · Physics 2021-07-15 Chengcheng Xin , Chiara M. F. Mingarelli , Jeffrey S. Hazboun

The sky localisation of about $10$ to $100~\text{deg}^2$, which is expected to be achieved in all-sky blind searches for gravitational waves from supermassive black hole binaries (SMBHBs) with Pulsar Timing Array (PTA) experiments, has long…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-13 Shubhit Sardana , Boris Goncharov , Jacob Cardinal Tremblay

The advent of time domain astronomy is revolutionizing our understanding of the Universe. Programs such as the Catalina Real-time Transient Survey (CRTS) or the Palomar Transient Factory (PTF) surveyed millions of objects for several years,…

High Energy Astrophysical Phenomena · Physics 2018-04-04 A. Sesana , Z. Haiman , B. Kocsis , L. Z. Kelley

NANOGrav, EPTA, PPTA, and CPTA have announced the evidence for a stochastic signal from their latest data sets. Supermassive black hole binaries (SMBHBs) are supposed to be the most promising gravitational-wave (GW) sources of pulsar timing…

Cosmology and Nongalactic Astrophysics · Physics 2023-11-16 Yan-Chen Bi , Yu-Mei Wu , Zu-Cheng Chen , Qing-Guo Huang

We propose a novel methodology to select host galaxy candidates of future pulsar timing array (PTA) detections of resolved gravitational waves (GWs) from massive black hole binaries (MBHBs). The method exploits the physical dependence of…

Instrumentation and Methods for Astrophysics · Physics 2019-02-20 Janna M. Goldstein , Alberto Sesana , A. Miguel Holgado , John Veitch

We demonstrate that very massive (>10^8\msun), cosmologically nearby (z<1) black hole binaries (MBHBs), which are primary targets for ongoing and upcoming pulsar timing arrays (PTAs), are particularly appealing multimessenger carriers.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 A. Sesana , C. Roedig , M. T. Reynolds , M. Dotti

We use the Horizon-AGN cosmological simulation to study the properties of supermassive black hole binaries (MBHBs) contributing most to the gravitational wave background (GWB) signal expected in the pulsar timing array (PTA) band. We…

Massive black holes (MBHs) exist in the Galactic center (GC) and other nearby galactic nuclei. As natural outcome of galaxy mergers, some MBHs may have a black hole (BH) companion. In this paper, assuming that the MBHs in the GC and some…

High Energy Astrophysical Phenomena · Physics 2024-11-22 Xiao Guo , Qingjuan Yu , Youjun Lu

By regularly monitoring the most stable millisecond pulsars over many years, pulsar timing arrays (PTAs) are positioned to detect and study correlations in the timing behaviour of those pulsars. Gravitational waves (GWs) from supermassive…

The observation of massive black hole binaries (MBHBs) with Pulsar Timing Arrays (PTAs) is one of the goals of gravitational wave astronomy in the coming years. Massive (>10^8 solar masses) and low-redshift (< 1.5) sources are expected to…

Cosmology and Nongalactic Astrophysics · Physics 2010-05-19 Alberto Sesana , Alberto Vecchio

Supermassive black holes (SMBHs) found in the centers of many galaxies have been recognized to play a fundamental active role in the cosmological structure formation process. In hierarchical formation scenarios, SMBHs are expected to form…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Pau Amaro-Seoane , Alberto Sesana , Loren Hoffman , Matthew Benacquista , Christoph Eichhorn , Junichiro Makino , Rainer Spurzem

Pulsar timing observations are used to place constraints on the rate of coalescence of supermassive black-hole (SMBH) binaries as a function of mass and redshift. In contrast to the indirect constraints obtained from other techniques,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Z. L. Wen , F. A. Jenet , D. Yardley , G. B. Hobbs , R. N. Manchester

Supermassive black holes (SMBHs) are found in the centers of massive galaxies, and galaxy mergers should eventually lead to SMBH mergers. Quasar activity has long been associated with galaxy mergers, so here we investigate if supermassive…

High Energy Astrophysical Phenomena · Physics 2025-04-16 J. Andrew Casey-Clyde , Chiara M. F. Mingarelli , Jenny E. Greene , Andy D. Goulding , Siyuan Chen , Jonathan R. Trump