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A Chandra Survey of Quasar Jets: First Results

journal contribution
posted on 2023-05-16, 19:30 authored by Marshall, HL, Schwartz, DA, James LovellJames Lovell, Murphy, DW, Worrall, DM, Birkinshaw, M, Gelbord, JM, Perlman, ES, Jauncey, DL
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.

History

Publication title

Astrophysical Journal Supplement Series

Volume

156

Pagination

13-33

ISSN

0067-0049

Department/School

School of Natural Sciences

Publisher

University of Chicago Press

Place of publication

Chicago, USA

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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