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Detection of X-Ray Emission from Galaxies Inside the Bootes VoidWe report the X-ray properties of Bootes void galaxies detected by the ROSAT All-Sky Survey (RASS). By searching the fields of 26 radio and 27 emission-line-selected void galaxies, we have detected nine X-ray-emitting void galaxies at greater than 2.7 sigma confidence level. Five of these nine galaxies are in the IRAS subsample. Two of the IRAS galaxies were previously identified in positional cross-correlation studies of the RASS and IRAS Point Source Catalogue sources. Three of the X-ray-emitting galaxies are active galactic nuclei (AGNs; IRAS 14288+5255, Mrk 845, and IRAS 15195+5050), three are emission-line galaxies (PC 1357+4641, CG 547, and CG 922), and the remaining three are of unknown spectral type (IRAS 14500+4804, CG 637, and MAS 15092+3940). The far-infrared flux levels of the AGN sources imply that most of the observed X-ray emissivity is from starburst activity. We have carried out timing and spectral analysis for the Seyfert 1 galaxy Mrk 845. Poor statistics prevents detailed analysis of the remaining sources. Only two galaxies in our sample, BHI 1514+3819 and FSS 1515+3823, were observed during ROSAT pointed observations resulting in a nondetection at the 1 sigma level.
Document ID
20010037827
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kim, Chulhee
(Chonbuk National Univ. Chonju, Korea, Republic of)
Boller, T.
(Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Ghosh, K.
(National Academy of Sciences - National Research Council Huntsville, AL United States)
Swartz, Douglas A.
(Universities Space Research Association Huntsville, AL United States)
Ramsey, Brian D.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
August 20, 2013
Publication Date
January 10, 2001
Publication Information
Publication: Astrophysical Journal
Publisher: American Astronomical Society
Volume: 546
Subject Category
Space Radiation
Funding Number(s)
CONTRACT_GRANT: NAGW-2166
Distribution Limits
Public
Copyright
Other

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