43 citations · 70 across the 2 of their papers we have counts for
2 papers
astro-ph2008★ 43 cited
X-ray spectral variability in PG1535+547: the changing-look of a 'soft X-ray weak' AGN
L. Ballo, M. Giustini, N. Schartel +5
PG1535+547 is a bright NLS1 galaxy, whose high energy emission shows strong variability in shape and flux. ROSAT data classified it as soft X-ray weak QSO (objects whose X-ray-to-o…
astro-ph2007★ 27 cited
XMM-Newton observation of the deep minimum state of PG 2112+059: A spectrum dominated by reflection from the accretion disk?
N. Schartel, P. M. Rodriguez-Pascual, M. Santos-Lleo +5
We analyse a 75ks XMM-Newton observation of PG 2112+059 performed in November 2005 and compare it with a 15ks XMM-Newton observation taken in May 2003. PG 2112+059 was found in a d…