129 citations · 152 across the 3 of their papers we have counts for
16 papers · 1 filter
Multifrequency Observations of the Blazar 3C 279 in January 2006
WEBT Collaboration, W. Collmar, M. Böttcher +13
We report first results of a multifrequency campaign from radio to hard X-ray energies of the prominent gamma-ray blazar 3C 279, which was organised around an INTEGRAL ToO observat…
Swift observations of GRB 060614: an anomalous burst with a well behaved afterglow
V. Mangano, S. T. Holland, D. Malesani +22
GRB 060614 is a remarkable GRB observed by Swift with puzzling properties, which challenge current progenitor models. The lack of any bright SN down to very strict limits and the v…
An Update on the X-ray transient Narrow-Line Seyfert 1 galaxy WPVS 007: Swift observations of UV variability and persistence of X-ray faintness
Dirk Grupe, Patricia Schady, Karen M. Leighly +3
We report on the detection of UV variability and the persistence of X-ray faintness of the X-ray transient Narrow-Line Seyfert 1 galaxy WPVS 007 based on the first year of monitori…
Redshift Filtering by Swift Apparent X-ray Column Density
Dirk Grupe, John A. Nousek, Daniel E. vanden Berk +5
We remark on the utility of an observational relation between the absorption column density in excess of the Galactic absorption column density, $ΔN_{\rm H} = N_{\rm H, fit} - N_{\…
X-ray transient AGN and galaxies, and why we need new soft X-ray surveys
D. Grupe
X-ray transience is the most extreme form of variability observed in AGN or normal non-active galaxies. While factors of 2-3 on timescales of days to years are quite common among A…
A cookbook for the XMMSAS
D. Grupe
This paper will give a short description of a `cookbook' for the XMM-Newton data reduction software XMMSAS. This `cookbook' has been developed at the Max-Planck-Institut für extrat…