High-Resolution X-Ray Spectroscopic Constraints on Cooling-Flow Models for Clusters of Galaxies
- J. Peterson, S. Kahn, J. Jernigan
- Physics
- 30 October 2002
We present high-resolution X-ray spectra of 14 putative cooling-flow clusters of galaxies obtained with the Reflection Grating Spectrometer on XMM-Newton. The clusters in the sample span a large…
XMM-Newton Reflection Grating Spectrometer Observations of Discrete Soft X-Ray Emission Features from NGC 1068
- A. Kinkhabwala, M. Sako, D. Liedahl
- Physics
- 19 March 2002
We present the first high-resolution, soft X-ray spectrum of the prototypical Seyfert 2 galaxy, NGC 1068. This spectrum was obtained with the XMM-Newton Reflection Grating Spectrometer (RGS).…
High-Resolution Observations of the Elliptical Galaxy NGC 4636 with the Reflection Grating Spectrometer on Board XMM-Newton
- H. Xu, S. Kahn, K. Makishima
- Physics
- 30 September 2001
We present the first high spectral resolution X-ray observation of the giant elliptical galaxy NGC 4636, obtained with the reflection grating spectrometer on board the XMM-Newton Observatory. The…
X-ray imaging spectroscopy of Abell 1835
- J. Peterson, F. Paerels, I. Sakelliou
- Physics
- 31 October 2000
We present detailed spatially-resolved spectroscopy results of the observation of Abell 1835 using the European Photon Imaging Cameras (EPIC) and the Reflection Grating Spectrometers (RGS) on the…
Gravitationally redshifted absorption lines in the X-ray burst spectra of a neutron star
- J. Cottam, F. Paerels, M. Méndez
- PhysicsNature
- 1 November 2002
The discovery of significant absorption lines in the spectra of 28 bursts of the low-mass X-ray binary EXO0748-676 is reported, which is completely consistent with models of neutron stars composed of normal nuclear matter, while it excludes some models in which the neutron stars are made of more exotic matter.
The Hot and Energetic Universe: A White Paper presenting the science theme motivating the Athena+ mission
- K. Nandra, D. Barret, I. Zhuravleva
- Physics
- 1 June 2013
This White Paper, submitted to the recent ESA call for science themes to define its future large missions, advocates the need for a transformational leap in our understanding of two key questions in…
X-Ray Spectral Study of the Photoionized Stellar Wind in Vela X-1
- S. Watanabe, M. Sako, Tadayuki Takahashi
- Physics
- 3 July 2006
We present results from quantitative modeling and spectral analysis of the high-mass X-ray binary system Vela X-1 obtained with the Chandra HETGS. The spectra exhibit emission lines from H- and…
The Chandra High-Energy Transmission Grating Observation of an X-Ray Ionization Cone in Markarian 3
- M. Sako, S. Kahn, F. Paerels, D. Liedahl
- Physics
- 20 September 2000
We present a preliminary analysis of the first high-resolution X-ray spectrum of a Seyfert 2 galaxy, Markarian 3, obtained with the High-Energy Transmission Grating Spectrometer on board the Chandra…
Interstellar X-Ray Absorption Spectroscopy of Oxygen, Neon, and Iron with the Chandra LETGS Spectrum of X0614+091
- F. Paerels, A. Brinkman, B. McLaughlin
- Physics
- 22 August 2000
We find resolved interstellar O K, Ne K, and Fe L absorption spectra in the Chandra X-Ray Observatory Low-Energy Transmission Grating Spectrometer (LETGS) spectrum of the low-mass X-ray binary…
Spatially resolved X-ray spectroscopy of cooling clusters of galaxies
- J. Kaastra, T. Tamura, H. Boehringer
- Physics
- 29 September 2003
We present spatially resolved X-ray spectra taken with the EPIC cameras of XMM-Newton of a sample of 17 cooling clusters and three non-cooling clusters for comparison. The deprojected spectra are…
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