The 2002-2017 X-ray Decline of the Narrow Line Seyfert 1 galaxy WPVS 007
Abstract
We report on the lowest observed X-ray flux state of the Narrow Line Seyfert 1 galaxy WPVS 007 (RA: 00 39 15.80, DEC: -51 17 03.00). Since its detection as a bright X-ray source with a luminosity slightly below 1043 erg s-1 (S. Vaughan, R. Edelson and R. S. Warwick, 2004) in the ROSAT All-Sky Survey of 1990, four Chandra observations of WVPS 007 over the past 20 years show a general decline in its X-ray emission.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- January 2020
- Bibcode:
- 2020ATel13434....1G
- Keywords:
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- AGN;
- Black Hole