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X-ray observations of the Seyfert 1 galaxies AKN120 and MCG8-11-11 (1980)

Marshall, F. E. ; Mushotzky, R.

In: CASI

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Publication Date: 2019-06-28

Description: A new X-ray source, H0523-00, with the optically variable Seyfert 1 galaxy AKN 120 is identified. The source has a 2-10 keV X-ray flux of 2 x 10 to the -11th ergs/sq cm s which corresponds to a 2-10 keV X-ray luminosity of 10 to the 44th ergs/s. X-ray observations over a 1.5 year time span combined with contemporaneous optical photometry show a decrease in the optical with no corresponding decrease in the X-ray. In contrast, similar observations of MCG 8-11-11 show a contemporaneous decrease in optical and X-ray fluxes. It is noted that the infrared and X-ray spectral slopes for these two objects are similar, with the optical being steeper by roughly one unit.

Keywords: ASTROPHYSICS

Type: NASA-TM-80663 , NAS 1.15:80663

Format: application/pdf

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