Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-03-10
Astrophys.J. 605 (2004) L105-L108
Astronomy and Astrophysics
Astrophysics
12 pages including 4 figures. Accepted for publication by ApJ Letters
Scientific paper
10.1086/420843
The Chandra Multiwavelength Project (ChaMP) has discovered a jet-like structure associated with a newly recognized QSO at redshift z=1.866. The system was 9.4 arcmin off-axis during an observation of 3C 207. Although significantly distorted by the mirror PSF, we use both a raytrace and a nearby bright point source to show that the X-ray image must arise from some combination of point and extended sources, or else from a minimum of three distinct point sources. We favor the former situation, as three unrelated sources would have a small probability of occurring by chance in such a close alignment. We show that interpretation as a jet emitting X-rays via inverse Compton (IC) scattering on the cosmic microwave background (CMB) is plausible. This would be a surprising and unique discovery of a radio-quiet QSO with an X-ray jet, since we have obtained upper limits of 100 microJy on the QSO emission at 8.46 GHz, and limits of 200 microJy for emission from the putative jet.
Aldcroft Thomas
Barkhouse Wayne
Birkinshaw Mark
Green Paul
Karovska Magarita
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