A Chandra observation of the radio-loud quasar 3C9 at redshift z=2.012 has revealed extended X-ray emission coincident with the radio jet. Of particular interest is the appearance of both jet and counterjet, which argues against the X-ray emission being highly beamed. We present the properties of the jets and discuss possible scenarios for the X-ray emission, contrasting them with the single sided jet found in PKS 0637-752, which has a similar X-ray luminosity. The jet X-ray emission in 3C9 is likely to be due to either nonthermal emission from a sheath with bulk Lorentz factor less than 1.5, or thermal emission from shocked cold gas surrounding the quasar. The thermal possibility implies a high mass for the cold gas unless it is highly clumped.

Chandra reveals X-rays along the radio axis in the quasar 3C 9 at z=2.012 / Fabian, A. C.; Celotti, Anna Lisa; Johnstone, R. M.. - In: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. - ISSN 0035-8711. - 338:1(2003), pp. L7-L11. [10.1046/j.1365-8711.2003.06111.x]

Chandra reveals X-rays along the radio axis in the quasar 3C 9 at z=2.012

Celotti, Anna Lisa;
2003-01-01

Abstract

A Chandra observation of the radio-loud quasar 3C9 at redshift z=2.012 has revealed extended X-ray emission coincident with the radio jet. Of particular interest is the appearance of both jet and counterjet, which argues against the X-ray emission being highly beamed. We present the properties of the jets and discuss possible scenarios for the X-ray emission, contrasting them with the single sided jet found in PKS 0637-752, which has a similar X-ray luminosity. The jet X-ray emission in 3C9 is likely to be due to either nonthermal emission from a sheath with bulk Lorentz factor less than 1.5, or thermal emission from shocked cold gas surrounding the quasar. The thermal possibility implies a high mass for the cold gas unless it is highly clumped.
2003
338
1
L7
L11
10.1046/j.1365-8711.2003.06111.x
https://doi.org/10.1046/j.1365-8711.2003.06111.x
https://arxiv.org/abs/astro-ph/0204488
Fabian, A. C.; Celotti, Anna Lisa; Johnstone, R. M.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/12918
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