scholarly journals Small-Scale X-Ray Variability in the Cassiopeia A Supernova Remnant

2006 ◽  
Vol 133 (1) ◽  
pp. 147-153 ◽  
Author(s):  
Daniel J. Patnaude ◽  
Robert A. Fesen
Keyword(s):  
Supernova Remnant ◽  
Small Scale ◽  
X Ray ◽  
Cassiopeia A

The Soft X-Ray Spectra of Cassiopeia a and Tycho's Supernova Remnant

1975 ◽  
Vol 200 ◽  
pp. 158 ◽  
Author(s):  
R. W. Hill ◽  
G. A. Burginyon ◽  
F. D. Seward
Keyword(s):  
Supernova Remnant ◽  
X Ray ◽  
Cassiopeia A

scholarly journals The X-ray structure and mass of the Cassiopeia A supernova remnant

1980 ◽  
Vol 193 (2) ◽  
pp. 175-188 ◽  
Author(s):  
A. C. Fabian ◽  
R. Willingale ◽  
J. P. Pye ◽  
S. S. Murray ◽  
G. Fabbiano
Keyword(s):  
Supernova Remnant ◽  
X Ray ◽  
Cassiopeia A

scholarly journals X-ray imaging and spectroscopic study of the SNR Kes 73 hosting the magnetar 1E 1841–045

2013 ◽  
Vol 9 (S296) ◽  
pp. 235-238
Author(s):  
H. S. Kumar ◽  
S. Safi-Harb ◽  
P. O. Slane ◽  
E. V. Gotthelf
Keyword(s):  
Supernova Remnant ◽  
Small Scale ◽  
X Rays ◽  
Hard Component ◽  
X Ray ◽  
X Ray Imaging ◽  
Hot Plasma ◽  
Metal Abundances ◽  
Western Limb ◽  
Shed Light

AbstractWe present the first detailed Chandra and XMM-Newton study of the young Galactic supernova remnant (SNR) Kes 73 associated with the anomalous X-ray pulsar (AXP) 1E 1841–045. Images of the remnant in the radio (20 cm), infrared (24 μm), and X-rays (0.5–7 keV) reveal a spherical morphology with a bright western limb. High-resolution Chandra images show bright diffuse emission across the remnant, with several small-scale clumpy and knotty structures filling the SNR interior. The overall Chandra and XMM-Newton spectrum of the SNR is best described by a two-component thermal model with the hard component characterized by a low ionization timescale, suggesting that the hot plasma has not yet reached ionization equilibrium. The soft component is characterized by enhanced metal abundances from Mg, Si, and S, suggesting the presence of metal-rich supernova ejecta. We discuss the explosion properties of the supernova and infer the mass of its progenitor star. Such studies shed light on our understanding of SNRs associated with highly magnetized neutron stars.

scholarly journals The X-Ray Expansion of the Supernova Remnant Cassiopeia A

1998 ◽  
Vol 505 (1) ◽  
pp. L27-L30 ◽  
Author(s):  
Barron Koralesky ◽  
L. Rudnick ◽  
E. V Gotthelf ◽  
J. W. Keohane
Keyword(s):  
Supernova Remnant ◽  
X Ray ◽  
Cassiopeia A

scholarly journals Multi-year X-Ray Variations of Iron-K and Continuum Emissions in the Young Supernova Remnant Cassiopeia A

2017 ◽  
Vol 836 (2) ◽  
pp. 225 ◽  
Author(s):  
Toshiki Sato ◽  
Yoshitomo Maeda ◽  
Aya Bamba ◽  
Satoru Katsuda ◽  
Yutaka Ohira ◽  
...  
Keyword(s):  
Supernova Remnant ◽  
X Ray ◽  
Cassiopeia A ◽  
Young Supernova Remnant

scholarly journals Locating the TeV γ-rays from the shell regions of Cassiopeia A

2013 ◽  
Vol 9 (S296) ◽  
pp. 380-381
Author(s):  
Lab Saha ◽  
Tulun Ergin ◽  
Pratik Majumdar ◽  
Mustafa Bozkurt
Keyword(s):  
Energy Range ◽  
Power Law ◽  
Supernova Remnant ◽  
X Ray ◽  
Cassiopeia A ◽  
Young Supernova Remnant ◽  
Multi Wavelength ◽  
Flux Level ◽  
Γ Rays ◽  
Different Parts

AbstractWe have analyzed Chandra X-ray data from different parts of the shell of young supernova remnant (SNR) in the energy range of 0.7 - 8 keV. We observed that X-ray flux level varies over different shell regions of the source. Implications of X-ray observation will be discussed here. We also analyzed Fermi-LAT data in the energy range 0.5 - 50 GeV for the source. The differential spectrum obtained in this way fits with simple power-law. We also present here multi-wavelength modeling of the source considering archival radio and TeV data along with Chandra and Fermi-LAT data.

Studies of the X-ray emission from supernova remnants

1974 ◽  
Vol 340 (1623) ◽  
pp. 423-437
Keyword(s):  
Supernova Remnants ◽  
Column Density ◽  
Supernova Remnant ◽  
Crab Nebula ◽  
Lower Intensity ◽  
X Ray ◽  
Cassiopeia A ◽  
Cygnus Loop ◽  
A Value ◽  
The Crab Nebula

Supernova remnants are now recognized as a class of soft X-ray emitting-objects. The evolution of a remnant’s X-ray emission is discussed and a number of possible X-ray emission mechanisms are described. The spectrum of the Crab Nebula has been studied with Copernicus. The data have been used to derive a value of the gas column density of the interstellar medium. The X-ray structure and spectrum of the remnant Cassiopeia. A have been investigated and the results are presented. A high resolution X-ray map of the Puppis A supernova remnant has been obtained and the interpretation of the X-ray structure is discussed. X-ray emission has been detected from the pulsar PSR 08 33-45. This observation is compared with data obtained from the Uhuru satellite in order to derive the gas column density to the source. Weak soft X-ray emission has been detected from the Cygnus Loop in the regions expected but a t a lower intensity – a search for regions of higher intensity is continuing. A programme to identify known radio remnants as X-ray emitters is in progress and the results obtained so far are reported.

scholarly journals The X‐Ray Source at the Center of the Cassiopeia A Supernova Remnant

2002 ◽  
Vol 569 (1) ◽  
pp. 275-279 ◽  
Author(s):  
S. Mereghetti ◽  
A. Tiengo ◽  
G. L. Israel
Keyword(s):  
Supernova Remnant ◽  
X Ray ◽  
Cassiopeia A
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