The Knotty Question of the Jet of PKS B1421–490
| dc.contributor.author | Gelbord, J. M. | |
| dc.contributor.author | Marshall, H. L. | |
| dc.contributor.author | Worrall, D. M. | |
| dc.contributor.author | Birkinshaw, M. | |
| dc.contributor.author | Lovell, J. E. J. | |
| dc.contributor.author | Ojha, R. | |
| dc.contributor.author | Godfrey, L. | |
| dc.contributor.author | Schwartz, D. A. | |
| dc.contributor.author | Perlman, E. S. | |
| dc.contributor.author | Georganopoulos, M. | |
| dc.contributor.author | Murphy, D. W. | |
| dc.contributor.author | Jauncey, D. L. | |
| dc.date.accessioned | 2020-05-04T15:34:18Z | |
| dc.date.available | 2020-05-04T15:34:18Z | |
| dc.date.issued | 2005-10-04 | |
| dc.description.abstract | We report the discovery of unusually strong optical and X-ray emission associated with a knot in the radio jet of PKS B1421-490. The knot is the brightest feature observed beyond the radio band, with knot/core flux ratios ~300 and 3.7 at optical and X-ray frequencies, respectively. We interpret the extreme optical output of the knot as synchrotron emission. The nature of the X-ray emission is unclear. We consider a second synchrotron component, inverse Compton emission from a relativistic, decelerating jet, and the possibility that this feature is a chance superposition of an unusual BL Lac object. | en_US |
| dc.description.sponsorship | The authors thank Bill van Altena, Dana Dinescu, and Terry Girard for their assistance with the SPM archive. This work has been supported in part under SAO contracts GO4-5124, SV1-61010, and NAS8-39073 and NASA LTSA grant NAG5- 9997. The ATCA and the LBA are part of the Australia Telescope, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. This research has made use of the NASA/IPAC Extragalactic Database (NED), NASA’s Astrophysics Data System (ADS), and data from the HST Guide Star Catalog (GSC, produced at STScI under US Government grant) and from the Two Micron All Sky Survey (2MASS, a joint project of the University of Massachusetts and the California Institute of Technology, funded by NASA and the NSF) | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.1086/497823 | en_US |
| dc.format.extent | 4 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2hjye-zmts | |
| dc.identifier.citation | J. M. Gelbord, H. L. Marshall, D. M. Worrall, M. Birkinshaw, J. E. J. Lovell, R. Ojha, L. Godfrey, D. A. Schwartz, E. S. Perlman, M. Georganopoulos, D. W. Murphy, and D. L. Jauncey, The Knotty Question of the Jet of PKS B1421–490,The Astrophysical Journal Letters, Volume 632, Number 2,https://doi.org/10.1086%2F497823 | en_US |
| dc.identifier.uri | https://doi.org/10.1086%2F497823 | |
| dc.identifier.uri | http://hdl.handle.net/11603/18481 | |
| dc.identifier.uri | http://simbad.u-strasbg.fr/simbad/sim-ref?querymethod=bib&simbo=on&submit=submit+bibcode&bibcode=2005ApJ...632L..75G | |
| dc.identifier.uri | https://ned.ipac.caltech.edu/cgi-bin/objsearch?search_type=Search&refcode=2005ApJ...632L..75G | |
| dc.identifier.uri | https://ui.adsabs.harvard.edu/link_gateway/2005ApJ...632L..75G/Chandra | |
| dc.language.iso | en_US | en_US |
| dc.publisher | IOP | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Physics Department Collection | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II) | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | © 2005. The American Astronomical Society. All rights reserved. | |
| dc.title | The Knotty Question of the Jet of PKS B1421–490 | en_US |
| dc.type | Text | en_US |