dc.contributor.author | Quataert, Eliot | |
dc.contributor.author | Di Matteo, Tiziana | |
dc.contributor.author | Narayan, Ramesh | |
dc.contributor.author | Ho, Luis C. | |
dc.date.accessioned | 2019-09-22T14:24:22Z | |
dc.date.issued | 1999 | |
dc.identifier.citation | Quataert, Eliot, Tiziana Di Matteo, Ramesh Narayan, and Luis C. Ho. 1999. “Possible Evidence for Truncated Thin Disks in the Low-Luminosity Active Galactic Nuclei M81 and NGC 4579.” The Astrophysical Journal 525 (2): L89–92. https://doi.org/10.1086/312353. | |
dc.identifier.issn | 0004-637X | |
dc.identifier.issn | 1538-4357 | |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:41384919 | * |
dc.description.abstract | M81 and NGC 4579 are two of the few low-luminosity active galactic nuclei that have an estimated mass for the central black hole, detected hard X-ray emission, and detected optical/UV emission. In contrast to the canonical "big blue bump," both have optical/UV spectra that decrease with increasing frequency in a vL(v) plot. Barring significant reddening by dust and/or large errors in the black hole mass estimates, the optical/UV spectra of these systems require that the inner edge of a geometrically thin, optically thick accretion disk lies at similar to 100 Schwarzschild radii. The observed X-ray radiation can be explained by an optically thin, two-temperature, advection-dominated accretion flow at smaller radii. | |
dc.language.iso | en_US | |
dc.publisher | American Astronomical Society | |
dash.license | LAA | |
dc.title | Possible Evidence for Truncated Thin Disks in the Low-Luminosity Active Galactic Nuclei M81 and NGC 4579 | |
dc.type | Journal Article | |
dc.description.version | Accepted Manuscript | |
dc.relation.journal | The Astrophysical Journal | |
dash.depositing.author | Narayan, Ramesh::dc7afe5d74d62c7b451015317ea2ccbe::600 | |
dc.date.available | 2019-09-22T14:24:22Z | |
dash.workflow.comments | 1Science Serial ID 95611 | |
dc.identifier.doi | 10.1086/312353 | |
dash.source.volume | 525;2 | |
dash.source.page | L89-L92 | |