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29 March 2024
 
  » arxiv » astro-ph/0504558

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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
Affiliation2,3), 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
AbstractWe 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
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