Show simple item record

dc.contributor.authorJohannsen, Tim
dc.contributor.authorWang, Carlos
dc.contributor.authorBroderick, Avery E
dc.contributor.authorDoeleman, Sheperd S
dc.contributor.authorFish, Vincent L
dc.contributor.authorLoeb, Abraham
dc.contributor.authorPsaltis, Dimitrios
dc.date.accessioned2016-11-10T03:32:19Z
dc.date.available2016-11-10T03:32:19Z
dc.date.issued2016-08-26
dc.identifier.citationTesting General Relativity with Accretion-Flow Imaging of Sgr A^{*}. 2016, 117 (9):091101 Phys. Rev. Lett.en
dc.identifier.issn1079-7114
dc.identifier.pmid27610837
dc.identifier.doi10.1103/PhysRevLett.117.091101
dc.identifier.urihttp://hdl.handle.net/10150/621316
dc.description.abstractThe Event Horizon Telescope is a global, very long baseline interferometer capable of probing potential deviations from the Kerr metric, which is believed to provide the unique description of astrophysical black holes. Here, we report an updated constraint on the quadrupolar deviation of Sagittarius A^{*} within the context of a radiatively inefficient accretion flow model in a quasi-Kerr background. We also simulate near-future constraints obtainable by the forthcoming eight-station array and show that in this model already a one-day observation can measure the spin magnitude to within 0.005, the inclination to within 0.09°, the position angle to within 0.04°, and the quadrupolar deviation to within 0.005 at 3σ confidence. Thus, we are entering an era of high-precision strong gravity measurements.
dc.description.sponsorshipCITA National Fellowship at the University of Waterloo; Perimeter Institute for Theoretical Physics; Natural Sciences and Engineering Research Council of Canada; Government of Canada through Industry Canada; Province of Ontario through the Ministry of Research and Innovation; National Science Foundation; Gordon and Betty Moore Foundation [GBMF-3561]en
dc.language.isoenen
dc.publisherAMER PHYSICAL SOCen
dc.relation.urlhttp://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.091101en
dc.rights© 2016 American Physical Societyen
dc.titleTesting General Relativity with Accretion-Flow Imaging of Sgr A^{*}.en
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Dept Astronen
dc.identifier.journalPhysical review lettersen
dc.description.noteThe right to use all or part of the Article, including the APS-prepared version without revision or modification, on the author(s)’ web home page or employer’s website and to make copies of all or part of the Article, including the APS-prepared version without revision or modification, for the author(s)’ and/or the employer’s use for educational or research purposes.en
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-06-16T20:55:11Z
html.description.abstractThe Event Horizon Telescope is a global, very long baseline interferometer capable of probing potential deviations from the Kerr metric, which is believed to provide the unique description of astrophysical black holes. Here, we report an updated constraint on the quadrupolar deviation of Sagittarius A^{*} within the context of a radiatively inefficient accretion flow model in a quasi-Kerr background. We also simulate near-future constraints obtainable by the forthcoming eight-station array and show that in this model already a one-day observation can measure the spin magnitude to within 0.005, the inclination to within 0.09°, the position angle to within 0.04°, and the quadrupolar deviation to within 0.005 at 3σ confidence. Thus, we are entering an era of high-precision strong gravity measurements.


Files in this item

Thumbnail
Name:
PhysRevLett.117.091101.pdf
Size:
177.0Kb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record