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Probing the Local Group Medium Toward Mkn 421 with Chandra and FUSE | Rik J. Williams
; Smita Mathur
; Fabrizio Nicastro
; Martin Elvis
; Jeremy J. Drake
; Taotao Fang
; Fabrizio Fiore
; Yair Krongold
; Q. Daniel Wang
; Yangsen Yao
; | Date: |
26 Apr 2005 | Subject: | astro-ph | Affiliation: | 2,3), Martin Elvis , Jeremy J. Drake , Taotao Fang , Fabrizio Fiore , Yair Krongold (2,3), Q. Daniel Wang , Yangsen Yao ( Ohio State, Harvard-Smithsonian CfA, UNAM, Univ. of California, Berkeley, Osservatorio Astronomico di Roma, Univ. of Massac | Abstract: | We report the detection of highly-ionized gas at z~0 seen in resonant UV and X-ray absorption lines toward the z=0.03 blazar Mkn 421. A total of 13 X-ray and 3 UV lines were measured (or upper limits derived), including three lines in the OVII K-series and Kalpha transitions from neon, carbon, and nitrogen. From the three OVII lines we derive a 2sigma Doppler parameter constraint of 24 | Source: | arXiv, astro-ph/0504558 | Services: | Forum | Review | PDF | Favorites |
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