A Chandra observation of the distant radio galaxy B2 0902+343: a powerful obscured active galaxy

Details A Chandra observation of the distant radio galaxy B2 0902+343: a powerful obscured active galaxy A Chandra observation of the distant radio galaxy B2 0902+343: a powerful obscured active galaxy

2002-02-25

arxiv.org/abs/astro-ph/0202449v1

Mon.Not.Roy.Astron.Soc.331:L57,2002

Astronomy and Astrophysics

Astrophysics

3 pages, 3 figures, accepted by MNRAS Letters

Scientific paper

10.1046/j.1365-8711.2002.05452.x

We report a Chandra observation of the z=3.395 radio galaxy B2 0902+343. The unresolved X-ray source is centred on the active nucleus. The spectrum is well fit by a flat power law of photon index of Gamma~1.1 with intrinsic absorption of 8x10^{22} cm^{-2}, and an intrinsic 2-10keV luminosity of 3.3x10^{45} erg/s. More complex models which allow for a steeper spectral index cause the column density and intrinsic luminosity to increase. The data limit any thermal luminosity of the hot magnetized medium, assumed responsible for high Faraday rotation measures seen in the radio source, to less than ~10^{45} erg/s.

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