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The Swift gamma-ray burst mission
The Swift mission will determine the origin of GRB, classify GRBs and search for new types, study the interaction of the ultrarelativistic outflows of GRBs with their surrounding medium, and use GRBs to study the early universe out to z >10.
X-ray emission from clusters of galaxies
We present a summary of X-ray spectral observations of ~ 30 clusters of galaxies from HEAO-1. There exists strong correlations between X-ray luminosity, Lx, and temperature kT in the form Lx ∝ T2.3.
ASCA Observations of Seyfert 1 Galaxies. I. Data Analysis, Imaging, and Timing
We present the first in a series of papers describing the X-ray properties of a sample of 18 Seyfert 1 galaxies, using data obtained by ASCA. The imaging data reveal a number of serendipitous hard
Resolving the extragalactic hard X-ray background
A deep survey using the Chandra satellite detects hard X-ray sources that could be active nuclei in dust-enshrouded galaxies or a population of quasars at extremely high redshift.
The Cosmic evolution of hard x-ray selected active galactic nuclei
We use highly spectroscopically complete deep and wide-area Chandra surveys to determine the cosmic evolution of hard X-ray–selected active galactic nuclei (AGNs). For the deep fields, we supplement
The X-Ray Observatory Suzaku
High-sensitivity wide-band X-ray spectroscopy is the key feature of the Suzaku X-ray observatory, launched on 2005 July 10. This paper summarizes the spacecraft, in-orbit performance, operations, and
ASCA Observations of Type 2 Seyfert Galaxies. I. Data Analysis Results
We present ASCA spatial, temporal, and spectral data for a sample of 26 observations of 25 type 2 active galactic nuclei (AGNs), composed of 17 Seyfert 2 galaxies and eight narrow emission line
X-Ray Spectral Properties of the BAT AGN Sample
The 9-month Swift Burst Alert Telescope (BAT) catalog provides the first unbiased (NH < 1024 cm?2) look at local (z = 0.03) active galactic nuclei (AGNs). In this paper, we present the collected
X-Ray Observations of Optically Selected, Radio-quiet Quasars. I. The ASCA Results
We present the result of 27 ASCA observations of 26 radio-quiet quasars (RQQs) from the Palomar-Green (PG) survey. The sample is not statistically complete, but it is reasonably representative of