The BeppoSAX observation of IRAS 20210+1121

Details The BeppoSAX observation of IRAS 20210+1121 The BeppoSAX observation of IRAS 20210+1121

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999nuphs..69..554u&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 69, Issue 1-3, p. 554-557.

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Nuclear Physics

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Scientific paper

We have obtained a hard X-ray spectrum of the ultraluminous infrared galaxy IRAS 20210+1121 (z=0.056), whose optical spectrum is that of a Seyfert 2. The most significant feature is a strong Fe K line at 6.7 (6.5-7.0)keV in the rest-frame with equivalent width about 1keV. This suggests that the observed X-ray continuum is scattered emission from a completely blocked AGN, a situation similar to that in NGC 1068. However, IRAS 20210+1121 has an observed 2-10keV luminosity of 4x1042ergs-1 (assuming H0=50kms-1Mpc-1), about ten times higher than NGC 1068. If the scattering efficiencies of NGC 1068 and IRAS 20210 are similar, then this implies the presence of an extremely luminous X-ray source in IRAS 20210.

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