Results 41 to 50 of about 2,168,923 (219)

X-ray source population study of the starburst galaxy M83 with XMM-Newton [PDF]

, 2013
We present the results obtained from the analysis of three XMM-Newton observations of M83. The aims of the paper are studying the X-ray source populations in M83 and calculating the X-ray luminosity functions of X-ray binaries for different regions of the galaxy. We detected 189 sources in the XMM-Newton field of view in the energy range of 0.2-12 keV.
arxiv   +1 more source

X-raying Active Galaxies with the New Generation of X-ray Observatories: Ionized Outflows and High-Redshift Studies [PDF]

arXiv, 2001
We briefly review X-ray studies of ionized AGN outflows and high-redshift AGN. We discuss recent progress with Chandra and XMM-Newton as well as prospects and requirements for future X-ray missions.
arxiv  

X-ray astronomy, 1 [PDF]

X ray ...
Holt, S. S.
core   +1 more source

Imaging slitless spectrometer for X-ray astronomy [PDF]

, 1968
Imaging slitless spectrometer, a combination of an X ray transmission /or reflection/ grating and image-forming X ray telescope, is capable of obtaining simultaneous spatial and spectral information about celestial X ray ...
Gursky, H., Zehnpfennig, T.
core   +1 more source

Atomic Data Needs for X-ray Astronomy

, 2002
. With the launches of the Chandra X-ray Observatory and XMM-Newton, high resolution X-ray spectra of cosmic sources are broad ening our understanding of the physical conditions, such as temperature, density, ionization state, and elemental abundances. X-
N. Brickhouse
semanticscholar   +1 more source

Some recent results of X-ray astronomy [PDF]

X ray astronomy rocket experiment for identification and positioning of SCO X-1 strong X ray ...
Rossi, B. B.
core   +1 more source

X- and Gamma-ray Studies of Cas A: Exposing Core Collapse to the Core

, 2003
In this review of X-ray and gamma-ray observations of Cas A, evidence is discussed that Cas A was a Type Ib supernova of a Wolf-Rayet star with a main sequence mass between 22-25 Msun, that exploded after stellar wind loss had reduced its mass to ~6 Msun.
Arnett, Ashworth, Chan, Chevalier, Delaney, Diehl, Fesen, Fesen, Fesen, Garcia-Segura, Gotthelf, Hamuy, Hashimoto, Heger, Hughes, Hwang, Iyudin, Jacco Vink, Jean, Kamper, Kifonidis, Laming, Lawrence, Markert, Massey, Meynet, Milne, Milne, Mochizuki, Mochizuki, Nagataki, Park, Rasmussen, Reed, Ruiz-Lapuente, Ryle, Stephenson, Tananbaum, Thorstensen, Vink, Vink, Vink, Vink, Willingale, Willingale, Woosley, Woosley   +46 more
core   +1 more source

The X-Ray Luminosity Function of Active Galactic Nuclei [PDF]

arXiv, 1999
We derive an X-ray luminosity function for active galactic nuclei (AGN) that accounts for the X-ray source counts in the 0.5-2.0 and 2-10 keV energy ranges, the redshift distribution of AGNs in the ROSAT Deep Survey (RDS), as well as the X-ray background (XRB) from 1-10 keV.
arxiv  

Quasars, pulsars, black holes and HEAO's [PDF]

Astronomical surveys are discussed by large X-ray, gamma ray, and cosmic ray instruments carried onboard high-energy astronomy observatories.
Doolitte, R. F., Moritz, K., Whilden, R. D. C.   +2 more
core   +1 more source

X-rays from Quiescent Low-Mass X-ray Binary Transients

, 2000
I argue that it is very unlikely that X-rays from quiescent black-hole low-mass X-ray binary transients are emitted by coronae of companion stars. I show that in a simple model in which these X-rays are emitted by an ADAF filling the inner part of an ...
Lasota, Jean-Pierre
core   +2 more sources