Dramatic X-ray variability in the narrow emission line galaxy NGC 7314

Details Dramatic X-ray variability in the narrow emission line galaxy NGC 7314 Dramatic X-ray variability in the narrow emission line galaxy NGC 7314

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.226p...9t&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 226, June 1, 1987, p. 9p-13p.

Astronomy and Astrophysics

Astronomy

24

Emission Spectra, Galaxies, Variability, X Ray Sources, X Ray Spectra, Exosat Satellite, Galactic Nuclei, Interstellar Gas, Light Curve, Seyfert Galaxies

Scientific paper

EXOSAT observations of the narrow emission line galaxy NGC 7314 have shown remarkable variability in the 2 - 10 keV band of the medium energy (ME) detectors. The most obvious feature in the ME light curve is a factor of 4 increase in the count rate over 5000 s, with some evidence for a softening of the spectrum as the source brightened. The lack of variations of similar strength in the 0.1 - 1.5 keV band of the low energy (LE) telescope suggests the existence of an additional spectral component which contributes significantly to the total LE flux.

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