SIMBAD references

2003ApJ...590L..87W - Astrophys. J., 590, L87-L90 (2003/June-3)

A puzzling X-ray source found in the Chandra Deep Field-South.

WANG J., YAQOOB T., SZOKOLY G., GILLI R., KEWLEY L., MAINIERI V., NONINO M., ROSATI P., TOZZI P., ZHENG W., ZIRM A. and NORMAN C.

Abstract (from CDS):

In this Letter, we report the detection of an extremely strong X-ray emission line in the 940 ks Chandra ACIS-I spectrum of CXOCDFS J033225.3-274219. The source was identified as a type 1 active galactic nucleus at a redshift of z=1.617, with a 2.0-10.0 keV rest-frame X-ray luminosity of ∼1044 ergs/s. The emission line was detected at 6.2+0.2–0.1keV, with an equivalent width (EW) of 4.4+3.2–1.4keV; both quantities refer to the observed frame. In the rest frame, the line is at 16.2+0.4–0.3keV with an EW of 11.5+8.3–3.7keV. An X-ray emission line at a similar energy (∼17 keV, in the rest frame) in PKS 2149-306 was discovered before using ASCA data. We reject the possibility that the line is due to a statistical or instrumental artifact. The line is most likely due to blueshifted Fe K emission from an relativistic outflow, probably an inner X-ray jet, with velocities of the order of ∼0.6c-0.7c. Other possible explanations are also discussed.

Abstract Copyright:

Journal keyword(s): Galaxies: Active - Galaxies: Individual: Alphanumeric: CXOCDFS J033225.3-274219 - Galaxies: Peculiar - X-Rays: Galaxies

Simbad objects: 8

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2020.01.18-17:05:58

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