University of Hertfordshire

From the same journal

From the same journal

By the same authors

Standard

A Markov Chain Monte Carlo approach for measurement of jet precession in radio-loud active galactic nuclei. / Horton, Maya; Hardcastle, Martin J.; Read, Shaun C.; Krause, Martin G. H.

In: Monthly Notices of the Royal Astronomical Society, Vol. 493, No. 3, 03.04.2020, p. 3911-3919.

Research output: Contribution to journalArticlepeer-review

Harvard

APA

Vancouver

Author

Bibtex

@article{9121a24ace904b2689f14f0650763efb,
title = "A Markov Chain Monte Carlo approach for measurement of jet precession in radio-loud active galactic nuclei",
abstract = " Jet precession can reveal the presence of binary systems of supermassive black holes. The ability to accurately measure the parameters of jet precession from radio-loud AGN is important for constraining the binary supermassive black hole population, which are expected as a result of hierarchical galaxy evolution. The age, morphology, and orientation along the line of sight of a given source often result in uncertainties regarding jet path. This paper presents a new approach for efficient determination of precession parameters using a 2D MCMC curve-fitting algorithm which provides us a full posterior probability distribution on the fitted parameters. Applying the method to Cygnus A, we find evidence for previous suggestions that the source is precessing. Interpreted in the context of binary black holes leads to a constraint of parsec scale and likely sub-parsec orbital separation for the putative supermassive binary. ",
keywords = "astro-ph.GA, astro-ph.HE",
author = "Maya Horton and Hardcastle, {Martin J.} and Read, {Shaun C.} and Krause, {Martin G. H.}",
note = "{\textcopyright} 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. ",
year = "2020",
month = apr,
day = "3",
doi = "10.1093/mnras/staa429",
language = "English",
volume = "493",
pages = "3911--3919",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "3",

}

RIS

TY - JOUR

T1 - A Markov Chain Monte Carlo approach for measurement of jet precession in radio-loud active galactic nuclei

AU - Horton, Maya

AU - Hardcastle, Martin J.

AU - Read, Shaun C.

AU - Krause, Martin G. H.

N1 - © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

PY - 2020/4/3

Y1 - 2020/4/3

N2 - Jet precession can reveal the presence of binary systems of supermassive black holes. The ability to accurately measure the parameters of jet precession from radio-loud AGN is important for constraining the binary supermassive black hole population, which are expected as a result of hierarchical galaxy evolution. The age, morphology, and orientation along the line of sight of a given source often result in uncertainties regarding jet path. This paper presents a new approach for efficient determination of precession parameters using a 2D MCMC curve-fitting algorithm which provides us a full posterior probability distribution on the fitted parameters. Applying the method to Cygnus A, we find evidence for previous suggestions that the source is precessing. Interpreted in the context of binary black holes leads to a constraint of parsec scale and likely sub-parsec orbital separation for the putative supermassive binary.

AB - Jet precession can reveal the presence of binary systems of supermassive black holes. The ability to accurately measure the parameters of jet precession from radio-loud AGN is important for constraining the binary supermassive black hole population, which are expected as a result of hierarchical galaxy evolution. The age, morphology, and orientation along the line of sight of a given source often result in uncertainties regarding jet path. This paper presents a new approach for efficient determination of precession parameters using a 2D MCMC curve-fitting algorithm which provides us a full posterior probability distribution on the fitted parameters. Applying the method to Cygnus A, we find evidence for previous suggestions that the source is precessing. Interpreted in the context of binary black holes leads to a constraint of parsec scale and likely sub-parsec orbital separation for the putative supermassive binary.

KW - astro-ph.GA

KW - astro-ph.HE

U2 - 10.1093/mnras/staa429

DO - 10.1093/mnras/staa429

M3 - Article

VL - 493

SP - 3911

EP - 3919

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -