scholarly journals The Use of Multiwavelength Archival Observational Data for Scientific Discoveries: a Case of the Supernova Remnant Cassiopeia A

2012 ◽  
Vol 21 (4) ◽  
Author(s):  
Dmitrijs Docenko
Keyword(s):  
Supernova Remnant ◽  
Reverse Shock ◽  
Cassiopeia A ◽  
Young Supernova Remnant ◽  
Rich Material ◽  
One Year ◽  
The Baltic ◽  
Space Data ◽  
Use Studies

AbstractMost of the high-quality astronomical data after a proprietary period of typically one year are provided to open access, allowing researchers to complement their observations with the archival data in other wavelength bands, thus improving quality of the data analysis. This paper presents one example of such a use - studies of the reverse shock front passing through an oxygen-rich material in the young supernova remnant Cassiopeia A. The paper is based on the contribution to the “Baltic Applied Astroinformatics and Space Data Processing” conference, held on 2012 May 7-8 in Ventspils, Latvia.

scholarly journals Asymmetries of Heavy Elements in the Young Supernova Remnant Cassiopeia A

2020 ◽  
Vol 889 (2) ◽  
pp. 144 ◽  
Author(s):  
Tyler Holland-Ashford ◽  
Laura A. Lopez ◽  
Katie Auchettl
Keyword(s):  
Supernova Remnant ◽  
Heavy Elements ◽  
Cassiopeia A ◽  
Young Supernova Remnant

scholarly journals FERMI -LAT DISCOVERY OF GeV GAMMA-RAY EMISSION FROM THE YOUNG SUPERNOVA REMNANT CASSIOPEIA A

2010 ◽  
Vol 710 (1) ◽  
pp. L92-L97 ◽  
Author(s):  
A. A. Abdo ◽  
M. Ackermann ◽  
M. Ajello ◽  
A. Allafort ◽  
L. Baldini ◽  
...  
Keyword(s):  
Supernova Remnant ◽  
Gamma Ray ◽  
Cassiopeia A ◽  
Young Supernova Remnant ◽  
Gamma Ray Emission

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.

scholarly journals NEW EVIDENCE FOR EFFICIENT COLLISIONLESS HEATING OF ELECTRONS AT THE REVERSE SHOCK OF A YOUNG SUPERNOVA REMNANT

2013 ◽  
Vol 780 (2) ◽  
pp. 136 ◽  
Author(s):  
Hiroya Yamaguchi ◽  
Kristoffer A. Eriksen ◽  
Carles Badenes ◽  
John P. Hughes ◽  
Nancy S. Brickhouse ◽  
...  
Keyword(s):  
Supernova Remnant ◽  
Reverse Shock ◽  
Young Supernova Remnant ◽  
New Evidence

Location of the Optical Reverse Shock in the Cassiopeia A Supernova Remnant

2004 ◽  
Vol 614 (2) ◽  
pp. 727-736 ◽  
Author(s):  
Jon A. Morse ◽  
Robert A. Fesen ◽  
Roger A. Chevalier ◽  
Kazimierz J. Borkowski ◽  
Christopher L. Gerardy ◽  
...  
Keyword(s):  
Supernova Remnant ◽  
Reverse Shock ◽  
Cassiopeia A

scholarly journals The Peculiar X-ray Morphology of the SNR G292.0+1.8 : Evidence for an Asymmetric Supernova Explosion

1983 ◽  
Vol 101 ◽  
pp. 153-158
Author(s):  
D. H. Clark ◽  
I. R. Tuohy
Keyword(s):  
Surface Brightness ◽  
Supernova Remnant ◽  
Supernova Explosion ◽  
Morphological Properties ◽  
Type Ii ◽  
X Ray ◽  
Young Supernova Remnant ◽  
Rich Material ◽  
Einstein Observatory ◽  
Shell Characteristic

A high resolution X-ray image from the Einstein Observatory of the young supernova remnant G292.0+1.8 (MSH11–54), previously noted as peculiar in terms of its spectral and morphological properties at optical and radio wavelengths, also shows an unusual X-ray morphology. Instead of a limb-brightened X-ray shell characteristic of most SNRs, the remnant consists of a central bar-like feature superposed on an ellipsoidal disc of approximately uniform surface brightness. We attribute the bar emission to a ring of oxygen-rich material ejected in the equatorial plane of a massive rotating progenitor, and the uniform disc component to emission from material with roughly cosmic composition heated by the accompanying blast wave. This interpretation provides observational support for the rotating precursor model of a Type II supernova discussed by Bodenheimer and Woosley.

scholarly journals X-ray, Optical and UV Observations of the Young Supernova Remnant in the Irregular Galaxy NGC 4449

1983 ◽  
Vol 101 ◽  
pp. 579-582
Author(s):  
W. P. Blair ◽  
R. P. Kirshner ◽  
P. F. Winkler ◽  
J. C. Raymond ◽  
R. A. Fesen ◽  
...  
Keyword(s):  
Supernova Remnant ◽  
Massive Star ◽  
Irregular Galaxy ◽  
Reverse Shock ◽  
X Ray ◽  
Young Supernova Remnant ◽  
Cas A

A powerful young supernova remnant (SNR) similar to Cas A has recently been discovered in the irregular galaxy NGC 4449. We have obtained X-ray, optical and ultraviolet data which allow us to investigate possible models for this object and estimate its age. Several lines of argument indicate a massive star of order 25 M⊙ as the precursor to this remnant. If the x-ray emission is attributed to a reverse shock in the ejecta, the remnant should be ∼ 120 years old.

scholarly journals Near-Infrared Study of Iron Knots in Cassiopeia A Supernova Remnant

2013 ◽  
Vol 9 (S296) ◽  
pp. 368-369
Author(s):  
Yong-Hyun Lee ◽  
Bon-Chul Koo ◽  
Dae-Sik Moon ◽  
Michael G. Burton
Keyword(s):  
Supernova Remnant ◽  
Near Infrared ◽  
Spectral Characteristics ◽  
Principal Component ◽  
Reverse Shock ◽  
Infrared Study ◽  
Cassiopeia A ◽  
Deep Layers ◽  
Nir Emission ◽  
Cas A

AbstractWe present the results of near-infrared (NIR) imaging and spectroscopic observations of the Galactic supernova remnant Cassiopeia A (Cas A). Applying the method of Principal Component Analysis to our broadband NIR spectra, we identify a total of 61 NIR emission knots of Cas A and classify them into three groups of distinct spectral characteristics: Helium-rich, Sulfur-rich, and Iron-rich groups. The first and second groups are of the circumstellar and supernova ejecta origin, respectively. The third group, which has enhanced iron emission, is of particular interests since it shows intermediate characteristics between the former two groups. We suggest that the Iron-rich group is knots of swept-up circumstellar medium around the contact discontinuity in Cas A and/or supernova ejecta from deep layers of its progenitor star which have recently encountered a reverse shock in the remnant.

scholarly journals Phosphorus in the Young Supernova Remnant Cassiopeia A

Science ◽  
2013 ◽  
Vol 342 (6164) ◽  
pp. 1346-1348 ◽  
Author(s):  
B.-C. Koo ◽  
Y.-H. Lee ◽  
D.-S. Moon ◽  
S.-C. Yoon ◽  
J. C. Raymond
Keyword(s):  
Supernova Remnant ◽  
Cassiopeia A ◽  
Young Supernova Remnant
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