Show simple item record

dc.contributor.authorBroderick, Avery E.
dc.contributor.authorNarayan, Ramesh
dc.contributor.authorKormendy, John
dc.contributor.authorPerlman, Eric S.
dc.contributor.authorRieke, Marcia J.
dc.contributor.authorDoeleman, Sheperd S.
dc.date.accessioned2016-01-11T20:39:03Z
dc.date.available2016-01-11T20:39:03Z
dc.date.issued2015-06-02
dc.identifier.citationBroderick, A., Narayan, R., Kormendy, J., Perlman, E., Rieke, M., & Doeleman, S. (2015). The Event Horizon of M87. The Astrophysical Journal, 805(2), 179. doi:10.1088/0004-637X/805/2/179Hen_US
dc.identifier.urihttp://hdl.handle.net/11141/784
dc.description.abstractThe 6 x 10⁹ M⊙ supermassive black hole at the center of the giant elliptical galaxy M87 powers a relativistic jet. Observations at millimeter wavelengths with the Event Horizon Telescope have localized the emission from the base of this jet to angular scales comparable to the putative black hole horizon. The jet might be powered directly by an accretion disk or by electromagnetic extraction of the rotational energy of the black hole. However, even the latter mechanism requires a confining thick accretion disk to maintain the required magnetic flux near the black hole. Therefore, regardless of the jet mechanism, the observed jet power in M87 implies a certain minimum mass accretion rate. If the central compact object in M87 were not a black hole but had a surface, this accretion would result in considerable thermal near-infrared and optical emission from the surface. Current flux limits on the nucleus of M87 strongly constrain any such surface emission. This rules out the presence of a surface and thereby provides indirect evidence for an event horizon × 9 M⊙ supermassive black hole at the center of the giant elliptical galaxy M87 powers a relativistic jet. Observations at millimeter wavelengths with the Event Horizon Telescope have localized the emission from the base of this jet to angular scales comparable to the putative black hole horizon. The jet might be powered directly by an accretion disk or by electromagnetic extraction of the rotational energy of the black hole. However, even the latter mechanism requires a confining thick accretion disk to maintain the required magnetic flux near the black hole. Therefore, regardless of the jet mechanism, the observed jet power in M87 implies a certain minimum mass accretion rate. If the central compact object in M87 were not a black hole but had a surface, this accretion would result in considerable thermal near-infrared and optical emission from the surface. Current flux limits on the nucleus of M87 strongly constrain any such surface emission. This rules out the presence of a surface and thereby provides indirect evidence for an event horizonen_US
dc.language.isoen_USen_US
dc.rightsThis published article is available in accordance with the publisher's policy. It may be subject to U.S. copyright law.en_US
dc.rights.urihttp://aas.org/publications/aas-copyright-policyen_US
dc.titleThe event of horizon of M87en_US
dc.typeArticleen_US
dc.identifier.doi10.1088/0004-637X/805/2/179


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record