SIMBAD references

1995A&A...300L..21G - Astronomy and Astrophysics, volume 300L21-24 (1995/8-1)

Discovery of an ultrasoft transient ROSAT AGN: WPVS 007.

GRUPE D., BEUERMAN K., MANNHEIM K., THOMAS H.-C., FINK H.H. and DE MARTINO D.

Abstract (from CDS):

We have identified the ROSAT source RX J0039.2-5117 with the previously almost unknown 'narrow line' Seyfert 1 galaxy WPVS007 (z = 0.028). The X-ray source displays quite unusual properties for an AGN. It was bright and ultrasoft in the ROSAT All-Sky Survey (RASS) and found at a level lower by a factor of ∼400 in PSPC count rate in 1993. The implied 0.1-2.4 keV luminosity during the RASS was ∼1037W. We discuss possible explanations for the extremely soft X-ray spectrum and the observed variability.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - galaxies: active - galaxies: individual: WPVS 007 - galaxies: nuclei - galaxies: Seyfert

Simbad objects: 2

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