Статья

A <i>Chandra</i> Survey of Quasar Jets: First Results

Herman L. MarshallCenter for Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139D. A. SchwartzHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138J. E. J. LovellCSIRO Australia Telescope National Facility, P.O. Box 76, Epping, NSW 2121, AustraliaD. W. MurphyJet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109D. M. WorrallDepartment of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UKM. BirkinshawDepartment of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UKJ. M. GelbordCenter for Space Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139Eric S. PerlmanJoint Center for Astrophysics and Physics Department, University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250D. L. JaunceyCSIRO Australia Telescope National Facility, P.O. Box 76, Epping, NSW 2121, Australia

2004en

ABI

Аннотация

We present results from Chandra X-ray imaging and spectroscopy of a flux-limited sample of flat-spectrum radio-emitting quasars with jetlike extended structure. Twelve of 20 quasar jets are detected in 5 ks ACIS-S exposures. The quasars without X-ray jets are not significantly different from those in the sample with detected jets except that the extended radio emission is generally fainter. New radio maps are combined with the X-ray images in order to elucidate the relation between radio and X-ray emission in spatially resolved structures. We find a variety of morphologies, including long straight jets and bends up to 90. All X-ray jets are one-sided although the radio images used for source selection often show lobes opposite the X-ray jets. The FRII X-ray jets can all be interpreted as inverse Compton scattering of cosmic microwave background photons by electrons in large-scale relativistic jets although deeper observations are required to test this interpretation in detail. Applying this interpretation to the jets as a population, we find that the jets would be aligned to within 30 of the line of sight generally, assuming that the bulk Lorentz factor of the jets is 10.

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Идентификаторы

DOI: 10.1086/425578

Цитирования и источники

Цитирований: 2Использованных источников: 0

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