ASCA observation of the Galactic Center

Details ASCA observation of the Galactic Center ASCA observation of the Galactic Center

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997adspr..19...63y&link_type=abstract

Advances in Space Research, Volume 19, Issue 1, p. 63-70.

Physics

Scientific paper

X-ray imaging and spectroscopic observations near the Galactic Center in the 0.5-10 keV energy band were carried out with the X-ray satellite ASCA. Several X-ray sources were detected. Luminosities of the sources are estimated to be of order 10^35-10^36 erg s^-1. The largely extended emission with K-shell transition lines from highly ionized atoms were confirmed. Moreover, an extended emission of the 6.4 keV line from the low ionized iron atom was discovered. The 6.4 keV line intensity is elongated to the north-east from the Galactic Center along the galactic plane and well correlates with the distribution of the dense molecular clouds observed in the radio bands. We interpret that the 6.4 keV line originates from the florescent from the molecular cloud irradiated by bright X-ray source.

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