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astro-ph1999
The extreme high frequency peaked BL Lac 1517+656
Volker Beckmann, Norbert Bade, Olaf Wucknitz
We present optical spectroscopy data that allowed a measurement of the redshift for the X-ray selected BL Lacertae object 1517+656. With a redshift of z = 0.702 this object has an…
astro-ph1999
The giant X-ray outbursts in NGC 5905 and IC 3599: Follow-up observations and outburst scenarios
Stefanie Komossa, Norbert Bade
(abridged) Huge amplitude X-ray outbursts in a few galaxies were reported in the last few years. As one of the exciting possibilities to explain these observations, tidal disruptio…
astro-ph1999
The giant X-ray outburst in NGC 5905 - a tidal disruption event ?
Stefanie Komossa, Norbert Bade
NGC 5905 is one of the very few galaxies that underwent a giant X-ray outburst, with a change in ROSAT photon countrate of a factor ~100. The outburst spectrum is both, very soft a…