Discovery of strong X-ray variability in a H II type galaxy.

Details Discovery of strong X-ray variability in a H II type galaxy. Discovery of strong X-ray variability in a H II type galaxy.

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995areps...1..112b&link_type=abstract

Astrophysics Reports, Special issue, No. 1, p. 112 - 118

Astronomy and Astrophysics

Astrophysics

H Ii Galaxies: X-Ray Variations, H Ii Galaxies: Active Galactic Nuclei

Scientific paper

The first detection of X-ray variability in a H II type galaxy is presented. The standard line ratio diagnostics of the galaxy, IRAS 15564+6359, points to the H II nature of the source. On the other hand, in terms of X-ray flux and spectral variability, the source is very similar to a varying active AGN. The small size of the emitting region deduced from the rapid variations can be taken as the strongest proof for the presence of an active nucleus in the H II type galaxy IRAS 15564+6359. The analysis of the X-ray spectra indicates that the flux variations are connected with strong spectral changes.

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