A historic jet-emission minimum reveals hidden spectral features in 3C 273
arXiv:astro-ph/0603579 · doi:10.1051/0004-6361:200600023
Abstract
Aims. The aim of this work is to identify and study spectral features in the quasar 3C 273 usually blended by its strong jet emission. Method. A historic minimum in the sub-millimetre emission of 3C 273 triggered coordinated multi-wavelength observations in June 2004. X-ray observations from the INTEGRAL, XMM-Newton and RXTE satellites are complemented by ground-based optical, infrared, millimetre and radio observations. The overall spectrum is used to model the infrared and X-ray spectral components. Results. Three thermal dust emission components are identified in the infrared. The dust emission on scales from 1 pc to several kpc is comparable to that of other quasars, as expected by AGN unification schemes. The observed weakness of the X-ray emission supports the hypothesis of a synchrotron self-Compton origin for the jet component. There is a clear soft-excess and we find evidence for a very broad iron line which could be emitted in a disk around a Kerr black hole. Other signatures of a Seyfert-like X-ray component are not detected.
arXiv comment4 pages. Accepted for publication in A&A Letters
References in corpus (10)
- Broad iron lines in Active Galactic Nuclei
- 30 years of multi-wavelength observations of 3C 273
- The Bright Quasar 3C 273
- Multi-wavelength Observations of 3C 273 in 1993-1995
- RXTE Observations of 3C273 between 1996 and 2000:Variability Timescale and Jet Power
- XMM-Newton observations of 3C 273
- A historic jet-emission minimum reveals hidden spectral features in 3C 273
- Simultaneous X-ray and infrared variability in the quasar 3C273
- A Broad Fe-Kalpha Emission Line in the X-Ray Spectrum of the Quasar 3C 273
- Testing the binary black hole paradigm through the Fe Kalpha line profile: application to 3C 273
Cited by in corpus (22)
- Piecing Together the X-ray Background: Bolometric Corrections for Active Galactic Nuclei
- Relativistic X-ray Lines from the Inner Accretion Disks Around Black Holes
- The multiwavelength variability of 3C 273
- Parsec-scale dust distributions in Seyfert galaxies - Results of the MIDI AGN snapshot survey
- A synchrotron self-Compton scenario for the very high energy gamma-ray emission of the radiogalaxy M87
- The connection between gamma-ray emission and millimeter flares in Fermi/LAT blazars
- WEBT and XMM-Newton observations of 3C 454.3 during the post-outburst phase. Detection of the little and big blue bumps
- Relativistic Broadening of Iron Emission Lines in a Sample of AGN
- AGILE detection of a rapid gamma-ray flare from the blazar PKS 1510-089 during the GASP-WEBT monitoring
- The jet/disk connection in AGN: Chandra and XMM observations of three powerful radio-loud quasars
- A historic jet-emission minimum reveals hidden spectral features in 3C 273
- Is BL Lacertae an "orphan" AGN? Multiband and spectroscopic constraints on the parent population
- Infrared properties of blazars: putting the GASP-WEBT sources into context
- Accretion Discs in Blazars
- Untangling Optical Emissions of the Jet and Accretion Disk in the Flat-Spectrum Radio Quasar 3C 273 with Reverberation Mapping Data
- 2003--2005 INTEGRAL and XMM-Newton observations of 3C 273
- The Relativistic Jet Orientation and Host Galaxy of the Peculiar Blazar PKS 1413+135
- High energy variability of 3C 273 during the AGILE multiwavelength campaign of December 2007 - January 2008
- Multifractality Signatures in Quasars Time Series. I. 3C 273
- Exploring the disc/jet interaction in the radio-loud quasar 4C +74.26 with Suzaku
- Origin of X-rays in the low state of the FSRQ 3C 273: Evidence of inverse Compton emission
- WEBT multiwavelength monitoring and XMM-Newton observations of BL Lacertae in 2007-2008. Unveiling different emission components