Observational evidence for the accretion-disk origin for a radio jet in an active galaxy
dc.contributor.author | Marscher, Alan P. | en_US |
dc.contributor.author | Jorstad, Svetlana G. | en_US |
dc.contributor.author | Gomez, J. L. | en_US |
dc.contributor.author | Aller, Margo F. | en_US |
dc.contributor.author | Terasranta, H. | en_US |
dc.contributor.author | Lister, M. L. | en_US |
dc.contributor.author | Stirling, Alastair M. | en_US |
dc.date.accessioned | 2009-06-01T17:43:00Z | |
dc.date.available | 2009-06-01T17:43:00Z | |
dc.date.issued | 2002-06-06 | en_US |
dc.identifier.citation | Marscher, AP; Jorstad, SG; Gomez, JL; Aller, MF; Terasranta, H; Lister, ML; Stirling, AM. (2002) "Observational evidence for the accretion-disk origin for a radio jet in an active galaxy." Nature 417(6889): 625-627. <http://hdl.handle.net/2027.42/62888> | en_US |
dc.identifier.issn | 0028-0836 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/62888 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=12050658&dopt=citation | en_US |
dc.description.abstract | Accretion of gas onto black holes is thought to power the relativistic jets of material ejected from active galactic nuclei (AGN) and the 'microquasars' located in our Galaxy(1-3). In microquasars, superluminal radio-emitting features appear and propagate along the jet shortly after sudden decreases in the Xray fluxes(1). This establishes a direct observational link between the black hole and the jet: the X-ray dip is probably caused by the disappearance of a section of the inner accretion disk(4) as it falls past the event horizon, while the remainder of the disk section is ejected into the jet, creating the appearance of a superluminal bright spot(5). No such connection has hitherto been established for AGN, because of insufficient multi-frequency data. Here we report the results of three years of monitoring the X-ray and radio emission of the galaxy 3C120. As has been observed for microquasars, we find that dips in the X-ray emission are followed by ejections of bright superluminal knots in the radio jet. The mean time between X-ray dips appears to scale roughly with the mass of the black hole, although there are at present only a few data points. | en_US |
dc.format.extent | 555973 bytes | |
dc.format.extent | 2489 bytes | |
dc.format.mimetype | application/octet-stream | |
dc.format.mimetype | text/plain | |
dc.publisher | Nature Publishing Group | en_US |
dc.source | Nature | en_US |
dc.title | Observational evidence for the accretion-disk origin for a radio jet in an active galaxy | en_US |
dc.type | Article | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA | en_US |
dc.contributor.affiliationother | Boston Univ, Inst Astrophys Res, Boston, MA 02215 USA | en_US |
dc.contributor.affiliationother | St Petersburg State Univ, Sobolev Astron Inst, St Petersburg 198504, Russia | en_US |
dc.contributor.affiliationother | CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain | en_US |
dc.contributor.affiliationother | Helsinki Univ Technol, Metsahovi Radio Observ, Kylmala 02540, Finland | en_US |
dc.contributor.affiliationother | Natl Radio Astron Observ, Charlottesville, VA 22903 USA | en_US |
dc.contributor.affiliationother | Univ Cent Lancashire, Ctr Astrophys, Preston PR1 2HE, Lancs, England | en_US |
dc.identifier.pmid | 12050658 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/62888/1/nature00772.pdf | |
dc.identifier.doi | http://dx.doi.org/10.1038/nature00772 | en_US |
dc.identifier.source | Nature | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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