The X-ray spectrum and time variability of narrow emission line galaxies

Details The X-ray spectrum and time variability of narrow emission line galaxies The X-ray spectrum and time variability of narrow emission line galaxies

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981stin...8512842m&link_type=abstract

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Physics

Emission Spectra, Line Spectra, Seyfert Galaxies, Spectral Line Width, X Ray Spectra, Luminosity, Periodic Variations, Spectral Resolution, Temporal Resolution, Variability

Scientific paper

X-ray spectral and temporal observations are reported for six narrow emission line galaxies (NELGs), all of which are fitted by power-law X-ray spectra of energy slope 0.8 and have column densities in the line of sight greater than 1 x 10 to the 22nd atoms/sq cm. Three of the objects, NGC 526a, NGC 2110 and MCG-5-23-16 are variable in their X-ray flux, and the latter two, along with NGC 5506 and NGC 7582, showed detectable variability in at least one observation. The measured X-ray properties of these NELGs, which also included NGC 2992, strongly resemble those of previously-measured type 1 Seyferts of the same X-ray luminosity and lead to the conclusion of great similarity between the NELGs and low-luminosity type 1 Seyferts. The implications of these observations for the optical line-emitting region structure of these galaxies are discussed.

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