888 citations · 6.2k across the 71 of their papers we have counts for
Showing 1995 · astro-phShow all
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astro-ph1995
Four new active galaxies with steep soft X-ray spectra
J. Greiner, R. Danner, N. Bade +3
We have discovered four AGN in the ROSAT all-sky-survey data with very steep X-ray spectra. We apply several models to these X-ray spectra with emphasis on warm absorber models whi…
astro-ph1995
Multifrequency Observations of Gamma-Ray Burst
J. Greiner
Neither a flaring nor a quiescent counterpart to a gamma-ray burst has yet been convincingly identified at any wavelength region. The present status of the search for counterparts…
astro-ph1995
The Optical Content of the Error Box of GRS 1915+105
Michel Boer, Jochen Greiner, Christian Motch
We report on deep photometry and spectroscopy of the objects detected in the ROSAT HRI X-ray error box of the hard X-ray transient, GRS 1915+105. The probable counterpart of this s…