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15 papers · 2 filters
X-Ray Lines and Absorption Edges in GRBs and Their Afterglows
M. Boettcher
Absorption and Reprocessing of Gamma-ray burst radiation in the environment of cosmological GRBs can be used as a powerful probe of the elusive nature of their progenitors. In part…
Cosmological constraints from evolution of cluster baryon mass function at z~0.5
A. Vikhlinin, A. Voevodkin, C. R. Mullis +8
We present a new method for deriving cosmological constraints based on the evolution of the baryon mass function of galaxy clusters, and implement it using 17 distant clusters from…
Chandra Observation of the Cooling Flow Cluster Abell 2052
Elizabeth L. Blanton, Craig L. Sarazin, Brian R. McNamara
We present an analysis of the Chandra X-ray observation of Abell 2052, including large scale properties of the cluster as well as the central region which includes the bright radio…
BL Lacertae: the multiwavelength campaign of 2000
M. Ravasio, G. Tagliaferri, G. Ghisellini +9
We present two BeppoSAX observations of BL Lacertae as part of a multiwavelength radio-to-TeV campaign. During the first observation we observe a faint Compton spectrum, while duri…
Emission and Absorption in the M87 LINER
B. M. Sabra, J. C. Shields, L. C. Ho +2
The nucleus of M87 displays a LINER spectrum at optical wavelengths, with a nuclear disk of nebulosity that is resolved by the Hubble Space Telescope. We present new results from o…
The Ionized Gas and Nuclear Environment in NGC 3783 II. Averaged HST/STIS and FUSE Spectra
Jack R. Gabel, D. Michael Crenshaw, Steven B. Kraemer +14
We present observations of the intrinsic absorption in the Seyfert 1 galaxy NGC 3783 obtained with the STIS/HST and FUSE. We have coadded multiple STIS and FUSE observations to obt…