activity
19952004
most citedZeeman tomography of magnetic white dwarfs, I. Reconstruction of the field geometry from synthetic spectra

39 citations · 42 across the 5 of their papers we have counts for

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Showing 1995Show all

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astro-ph1995

Ultrasoft transient X-ray emission from AGN

K. Mannheim, D. Grupe, K. Beuermann +2

We report some remarkable and unexpected results of optical/UV/X-ray follow-up observations of bright soft X-ray selected AGN from the ROSAT All-Sky-Survey. The majority of these A…

astro-ph1995

X-RAY OUTBURST OF THE PECULIAR SEYFERT GALAXY IC 3599

D. Grupe, K. Beuermann, K. Mannheim +4

We report optical, soft X-ray, and UV observations of the peculiar Seyfert galaxy IC 3599 using data obtained with ROSAT and IUE. Most remarkably, we discovered a rapid decrease of…