Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011pasj...63s.957y&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.63, No.SP3, pp.S957-S961
Astronomy and Astrophysics
Astronomy
Galaxies: Intergalactic Medium, X-Rays: Galaxies: Clusters, X-Rays: Individual (Ax J185905+0333)
Scientific paper
We present Suzaku results of an X-ray source, AX J185905+0333, discovered in the ASCA galactic plane survey. The radial profile of AX J185905+0333 is larger than that of the point-spread function. No intensity variation was found during the observation. These facts indicate that AX J185905+0333 is an extended source. A large low-energy absorption, equivalent to NH of (8-10) × 1022 cm-2, was found, which supports that AX J185905+0333 is an extragalactic object behind the galactic plane. The X-ray spectrum exhibits a clear emission line at 4.82 keV, and is represented by a thin-thermal plasma model of 6.6 keV temperature with a redshift of 0.391. Then, the X-ray luminosity was calculated to be 2.7 × 1045 erg s-1. These results strongly support that AX J185905+0333 is an X-ray luminous cluster of galaxies behind the galactic plane.
Bamba Aya
Koyama Katsuji
Yamauchi Shigeo
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