Young Supernova Remnants: Probing the Ejecta and the Circumstellar Medium

2020 ◽  
pp. 221-256
Author(s):  
Jacco Vink
Keyword(s):  
Supernova Remnants ◽  
Circumstellar Medium

Radio emission from young supernova remnants - Effects of an inhomogeneous circumstellar medium

1989 ◽  
Vol 70 ◽  
pp. 497 ◽  
Author(s):  
John R. Dickel ◽  
Jean A. Eilek ◽  
Eric M. Jones ◽  
Stephen P. Reynolds
Keyword(s):  
Radio Emission ◽  
Supernova Remnants ◽  
Circumstellar Medium

scholarly journals The Morphologies of SNRs and Their ISM and CSM

1998 ◽  
Vol 188 ◽  
pp. 260-261
Author(s):  
Zhenru Wang
Keyword(s):  
Interstellar Medium ◽  
Point Source ◽  
Supernova Remnants ◽  
Theoretical Models ◽  
Multiphase Structure ◽  
Center Point ◽  
Circumstellar Medium

Recently, many unusual morphologies of supernova remnants (SNRs) have been discovered: semicircular shell; center-brightened but without center point source; two-lobed; bipolar; irregular, etc. To understand these varieties of morphologies, we have made theoretical models. One of the main reasons of their unusualness is the multiphase structure of the interstellar medium (ISM) and circumstellar medium (CSM) where they evolved, and the CSM is connected with their progenitor.

scholarly journals Non-thermal radio supernova remnants of exiled Wolf–Rayet stars

2021 ◽  
Vol 502 (4) ◽  
pp. 5340-5355
Author(s):  
D M-A Meyer ◽  
M Pohl ◽  
M Petrov ◽  
L Oskinova
Keyword(s):  
Magnetic Field ◽  
Supernova Remnants ◽  
Supernova Explosion ◽  
High Mass ◽  
Mixing Efficiency ◽  
Thermal Radio ◽  
Thermal Radio Emission ◽  
Characteristic Features ◽  
Hydrodynamical Simulations ◽  
Circumstellar Medium

ABSTRACT A signification fraction of Galactic massive stars (${\ge}8\, \rm M_{\odot }$) are ejected from their parent cluster and supersonically sail away through the interstellar medium (ISM). The winds of these fast-moving stars blow asymmetric bubbles thus creating a circumstellar environment in which stars eventually die with a supernova explosion. The morphology of the resulting remnant is largely governed by the circumstellar medium of the defunct progenitor star. In this paper, we present 2D magneto-hydrodynamical simulations investigating the effect of the ISM magnetic field on the shape of the supernova remnants of a $35\, \mathrm{M}_{\odot }$ star evolving through a Wolf–Rayet phase and running with velocity 20 and $40\, \rm km\, \rm s^{-1}$, respectively. A $7\, \mu \rm G$ ambient magnetic field is sufficient to modify the properties of the expanding supernova shock front and in particular to prevent the formation of filamentary structures. Prior to the supernova explosion, the compressed magnetic field in the circumstellar medium stabilizes the wind/ISM contact discontinuity in the tail of the wind bubble. A consequence is a reduced mixing efficiency of ejecta and wind materials in the inner region of the remnant, where the supernova shock wave propagates. Radiative transfer calculations for synchrotron emission reveal that the non-thermal radio emission has characteristic features reflecting the asymmetry of exiled core-collapse supernova remnants from Wolf–Rayet progenitors. Our models are qualitatively consistent with the radio appearance of several remnants of high-mass progenitors, namely the bilateral G296.5+10.0 and the shell-type remnants CTB109 and Kes 17, respectively.

The effect of a circumstellar medium on the X-ray emission of young supernova remnants

1988 ◽  
Vol 31 ◽  
pp. 519-521
Author(s):  
Hiroshi Itoh ◽  
Kuniaki Masai
Keyword(s):  
Supernova Remnants ◽  
X Ray ◽  
Circumstellar Medium

scholarly journals Supernova Remnants

1974 ◽  
Vol 3 ◽  
pp. 559-563
Author(s):  
S. Van den Bergh
Keyword(s):  
Supernova Remnants ◽  
Present Structure ◽  
Cas A ◽  
Circumstellar Medium

AbstractThe present structure and recent changes in Cas A are discussed. On the deepest available exposures the optical remnant of this supernova is seen to consist of an almost complete shell. The southern part of this shell is outlined by knots that have developed during the last decade. It is pointed out that moving nebulosity in which [O III] radiation is particularly strong is distributed differently from nebulosity in which the [O III]/[S II] ratio is more nearly normal. Observation of the motions of individual knots suggests a model in which dense blobs of matter, which have a highly anomalies composition, become luminous as they plough through a stationary interstellar (or circumstellar) medium.

Interaction of supernova remnants: From the circumstellar medium to the terrestrial laboratory

2006 ◽  
Vol 13 (9) ◽  
pp. 092901 ◽  
Author(s):  
P. Velarde ◽  
D. García-Senz ◽  
E. Bravo ◽  
F. Ogando ◽  
A. Relaño ◽  
...  
Keyword(s):  
Supernova Remnants ◽  
Circumstellar Medium

Five Mature Supernova Remnants in the Large Magellanic Cloud

1998 ◽  
Vol 115 (3) ◽  
pp. 1057-1075 ◽  
Author(s):  
John R. Dickel ◽  
D. K. Milne
Keyword(s):  
Supernova Remnants ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud

No Water Masers Associated with Supernova Remnants

1999 ◽  
Vol 117 (3) ◽  
pp. 1387-1391 ◽  
Author(s):  
M. J. Claussen ◽  
W. M. Goss ◽  
D. A. Frail ◽  
M. Seta
Keyword(s):  
Supernova Remnants ◽  
Water Masers

scholarly journals Evolutionary Models for 43 Galactic Supernova Remnants with Distances and X-Ray Spectra

2020 ◽  
Vol 248 (1) ◽  
pp. 16 ◽  
Author(s):  
D. A. Leahy ◽  
S. Ranasinghe ◽  
M. Gelowitz
Keyword(s):  
Supernova Remnants ◽  
Evolutionary Models ◽  
X Ray
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