Can I read An ASCA observation of the radio-loud narrow-line Seyfert 1 galaxy RGB J0044+193 on EtoBox?

An ASCA observation of the radio-loud narrow-line Seyfert 1 galaxy RGB J0044+193 by Siebert, J.; Leighly, K. M.; Laurent-Muehleisen, S. A.; Brinkmann, W.; Boller, Th.; Matsuoka, M. is a scholarly article available to read on EtoBox.

What is An ASCA observation of the radio-loud narrow-line Seyfert 1 galaxy RGB J0044+193 about?

We present the results of an ASCA observation of the radio-loud NLS1 galaxy RGB J0044+193. The X-ray data are complemented by radio observations and a new optical spectrum for this source. We find evidence for variable radio emission and an inverted radio spectrum. The optical continuum turned out to be extremely blue. This may either indicate additional line emission, for example from Fe I, or scattering of a blue intrinsic continuum. The X-ray spectrum shows a clear break around 1.8 keV. Above this energy the spectrum is characterized by a power law with a photon index of 2.1. For energies below 2 keV the spectrum can either be modeled with a steeper power law (2.7) or a blackbody component with a temperature around 0.2 keV. The X-ray count rate of the source decreased by a factor of two within one day and there is evidence for low amplitude variability on much shorter time scales. Given its average 2-10 keV X-ray luminosity of 1.35e+44 erg/s, RGB J0044+193 is significantly more variable than a typical broad line Seyfert 1 galaxy of comparable X-ray luminosity, but consistent with the bulk of NLS1 galaxies. The spectral as well as the variability properties of RGB J0044+193 are i

Author

Siebert, J.; Leighly, K. M.; Laurent-Muehleisen, S. A.; Brinkmann, W.; Boller, Th.; Matsuoka, M.

Published

1999

Language

EN