Diffuse X-rays in the Galactic center region -- The zoo of iron line clumps, non-thermal filaments and hot plasmas --

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dc.creatorBamba, Aya
dc.creatorMurakami, Hiroshi
dc.creatorSenda, Atsushi
dc.creatorTakagi, Shin-ichiro
dc.creatorYokogawa, Jun
dc.creatorKoyama, Katsuji
dc.date2002-02-01
dc.date.accessioned2026-07-07T02:02:36Z
dc.date.available2026-07-07T02:02:36Z
dc.descriptionThis paper reports the diffuse X-ray features around the Galactic center observed with Chandra. We confirm the ASCA and Ginga discoveries of the large-scale thin-thermal plasma with strong lines in the Galactic center region. In addition, many small clumps of emission lines from neutral (6.4 keV line) to He-like (6.7 keV line) irons are discovered. The 6.4 keV line clumps would be reflection nebulae, while those of the 6.7 keV line are likely SNRs. We also find emission lines of intermediate energy between 6.5-6.7 keV, which are attributable to young SNRs in non equilibrium ionization. Non-thermal filaments or belts with X-ray spectra of no emission line are found, suggesting the Fermi acceleration site in a rapidly expanding shell. All these suggest that multiple-supernovae or extremely large explosion had occurred around the Galactic center region in the recent past.
dc.description4 pages, 4 figures, Proceedings of the Symposium "New Visions of the X-ray Universe in the XMM-Newton and Chandra era", Noordwijk-NL, November 2001 for ps-file with high resolution figures, see http://www-cr.scphys.kyoto-u.ac.jp/member/bamba/Proceeding/Newvision.ps.gz
dc.identifierhttps://arxiv.org/abs/astro-ph/0202010
dc.identifierhttp://arxiv.org/abs/astro-ph/0202010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/4095
dc.subjectAstrophysics
dc.titleDiffuse X-rays in the Galactic center region -- The zoo of iron line clumps, non-thermal filaments and hot plasmas --
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