Observational signatures of mass-loading in jets launched by rotating black holes

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dc.contributor.author O'Riordan, Michael
dc.contributor.author Pe'er, Asaf
dc.contributor.author McKinney, Jonathan C.
dc.date.accessioned 2018-02-09T10:29:31Z
dc.date.available 2018-02-09T10:29:31Z
dc.date.issued 2018-01
dc.identifier.citation O'Riordan, M., Pe'er, A. and McKinney, J. C. (2018) 'Observational Signatures of Mass-loading in Jets Launched by Rotating Black Holes', The Astrophysical Journal, 853(1), 44 (10 pp). doi:10.3847/1538-4357/aaa0c4 en
dc.identifier.volume 853 en
dc.identifier.issued 1 en
dc.identifier.startpage 44-1 en
dc.identifier.endpage 44-10 en
dc.identifier.issn 0004-637X
dc.identifier.uri http://hdl.handle.net/10468/5429
dc.identifier.doi 10.3847/1538-4357/aaa0c4
dc.description.abstract It is widely believed that relativistic jets in X-ray binaries (XRBs) and active-galactic nuclei are powered by the rotational energy of black holes. This idea is supported by general-relativistic magnetohydrodynamic (GRMHD) simulations of accreting black holes, which demonstrate efficient energy extraction via the Blandford–Znajek mechanism. However, due to uncertainties in the physics of mass loading, and the failure of GRMHD numerical schemes in the highly magnetized funnel region, the matter content of the jet remains poorly constrained. We investigate the observational signatures of mass loading in the funnel by performing general-relativistic radiative transfer calculations on a range of 3D GRMHD simulations of accreting black holes. We find significant observational differences between cases in which the funnel is empty and cases where the funnel is filled with plasma, particularly in the optical and X-ray bands. In the context of Sgr A*, current spectral data constrains the jet filling only if the black hole is rapidly rotating with a gsim 0.9. In this case, the limits on the infrared flux disfavor a strong contribution from material in the funnel. We comment on the implications of our models for interpreting future Event Horizon Telescope observations. We also scale our models to stellar-mass black holes, and discuss their applicability to the low-luminosity state in XRBs. en
dc.description.sponsorship Science Foundation Ireland, Higher Education Authority, Department of Education and Skills (DJEI/DES/SFI/HEA Irish Centre for High-End Computing (ICHEC) for the provision of computational facilities under project ucast008b); Irish Research Council (grant number GOIPG/2013/315); National Aeronautics and Space Administration, National Science Foundation (NASA/NSF/TCAN (NNX14AB46G),(NSF/XSEDE/TACC (TGPHY120005), and NASA/Pleiades (SMD-14-5451)) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Astronomical Society; IOP Publishing en
dc.relation.uri http://stacks.iop.org/0004-637X/853/i=1/a=44
dc.rights © 2018. The American Astronomical Society. All rights reserved en
dc.subject Accretion en
dc.subject Accretion disks en
dc.subject Black hole physics en
dc.subject Galaxies: jets en
dc.subject Galaxy: center en
dc.subject Radiative transfer en
dc.subject X-rays: binaries en
dc.title Observational signatures of mass-loading in jets launched by rotating black holes en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Asaf Pe'er, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: a.peer@ucc.ie en
dc.internal.authorcontactother Michael O'Riordan, Physics, University College Cork, Cork, Ireland. +353-21-490-3000 en
dc.internal.availability Full text available en
dc.date.updated 2018-02-09T10:09:55Z
dc.description.version Published Version en
dc.internal.rssid 425097079
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Higher Education Authority en
dc.contributor.funder Department of Education and Skills en
dc.contributor.funder Seventh Framework Programme en
dc.contributor.funder European Commission en
dc.contributor.funder National Aeronautics and Space Administration en
dc.contributor.funder National Science Foundation en
dc.description.status Peer reviewed en
dc.identifier.journaltitle The Astrophysical Journal en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress a.peer@ucc.ie en
dc.internal.IRISemailaddress michael_oriordan@umail.ucc.ie
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/618499/EU/Transient-Sky/TRANSIENT-SKY en


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