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Relativistic outflow in CXO CDFS J033260.0-274748 | | J. X. Wang
; T. G. Wang
; P. Tozzi
; R. Giacconi
; G. Hasinger
; L. Kewley
; V. Mainieri
; M. Nonino
; C. Norman
; A. Streblyanska
; G. Szokoly
; T. Yaqoob
; A. Zirm
; | | Date: |
10 Aug 2005 | | Journal: | Astrophys.J. 631 (2005) L33-L36 | | Subject: | astro-ph | | Abstract: | In this letter we report the detection of a strong and extremely blueshifted X-ray absorption feature in the 1 Ms Chandra spectrum of CXO CDFS J033260.0-274748, a quasar at z = 2.579 with L_2-10keV ~ 4x10^44 ergs/s. The broad absorption feature at ~ 6.3 keV in the observed frame can be fitted either as an absorption edge at 20.9 keV or as a broad absorption line at 22.2 keV rest frame. The absorber has to be extremely ionized with an ionization parameter xi ~ 10^4, and a high column density N_H >5x10^23 cm^-2. We reject the possibility of a statistical or instrumental artifact. The most likely interpretation is an extremely blueshifted broad absorption line or absorption edge, due to H or He--like iron in a relativistic jet-like outflow with bulk velocity of ~ 0.7-0.8 c. Similar relativistic outflows have been reported in the X-ray spectra of several other AGNs in the past few years. | | Source: | arXiv, astro-ph/0508225 | | Services: | Forum | Review | PDF | Favorites | |
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