Mixed-morphology supernova remnants: the case of SNR 0520–69.4 in the Large Magellanic Cloud

2020 ◽  
Vol 499 (3) ◽  
pp. 4213-4222
Author(s):  
I Ramírez-Ballinas ◽  
J Reyes-Iturbide ◽  
P Ambrocio-Cruz ◽  
R Gabbasov ◽  
M Rosado

ABSTRACT We present observations in X-ray and optical emission of the supernova remnant (SNR) 0520–69.4 in the Large Magellanic Cloud. Using XMM–Newton observatory data, we produced images of the diffuse X-ray emission and spectra to obtain the X-ray parameters, such as luminosity and temperature, of hot plasma in the SNR. Diffuse X-ray emission with filled-centre morphology goes beyond the Hα region, suggesting that the hot gas escapes through the pores of the Hα shell. We fitted a model that has a plasma temperature of 1.1 × 107 K for an X-ray thermal luminosity of 3.3 × 1035 erg s−1. However, from Hα and [O iii] Fabry–Perot observations obtained with the Marseille Hα Survey of the Magellanic Clouds and the Milky Way at La Silla, European Southern Observatory, we are able to obtain physical parameters such as the velocity of the shock induced in the cloudlets emitting at optical wavelengths and the electron density of this gas. With the parameters described above, we test the model proposed by White & Long (1991, ApJ, 373, 543) for explaining the mixed-morphology observed.

1988 ◽  
Vol 101 ◽  
pp. 383-386
Author(s):  
James R. Graham ◽  
A. Evans ◽  
J.S. Albinson ◽  
M.F. Bode ◽  
W.P.S. Meikle

AbstractIRAS additional observations show that luminous (104−105 L⊙) far-IR sources are associated with the Large Magellanic Cloud (LMC) supernova remnants N63A, N49, N49B, and N186D. Comparison of the IRAS and X-ray data shows that a substantial fraction of the IR emission from three of the SNRs can be accounted for by collisionally heated dust. The ratio of dust-grain cooling to total atomic cooling is ~10 in X-ray emitting gas (T~106 K). We show why dust cooling does not dominate, but probably speeds SNR evolution in an inhomogeneous interstellar medium.


1982 ◽  
Vol 255 ◽  
pp. 440 ◽  
Author(s):  
D. H. Clark ◽  
I. R. Tuohy ◽  
M. A. Dopita ◽  
D. S. Mathewson ◽  
K. S. Long ◽  
...  

2016 ◽  
Vol 585 ◽  
pp. A162 ◽  
Author(s):  
P. Maggi ◽  
F. Haberl ◽  
P. J. Kavanagh ◽  
M. Sasaki ◽  
L. M. Bozzetto ◽  
...  

1998 ◽  
Vol 15 (1) ◽  
pp. 136-140
Author(s):  
You-Hua Chu

AbstractThe Large Magellanic Cloud (LMC) has been surveyed in optical emission lines, X-rays, radio continuum, HI, and CO lines. These surveys provide views of the interstellar medium (ISM) in the LMC of unprecedented clarity, allowing us to study astrophysical processes and to examine the relationship among the different phases of the ISM. Multi-wavelength images are used to illustrate the physical structures of supernova remnants, superbubbles, and supergiant shells, as well as the global interstellar structure of the LMC.


1999 ◽  
Vol 123 (2) ◽  
pp. 467-485 ◽  
Author(s):  
Rosa Murphy Williams ◽  
You‐Hua Chu ◽  
John R. Dickel ◽  
Robert Petre ◽  
R. Chris Smith ◽  
...  

2014 ◽  
Vol 561 ◽  
pp. A76 ◽  
Author(s):  
P. Maggi ◽  
F. Haberl ◽  
P. J. Kavanagh ◽  
S. D. Points ◽  
J. Dickel ◽  
...  

2004 ◽  
Vol 613 (2) ◽  
pp. 948-955 ◽  
Author(s):  
R. M. Williams ◽  
Y.‐H. Chu ◽  
J. R. Dickel ◽  
R. A. Gruendl ◽  
R. Shelton ◽  
...  

2010 ◽  
Vol 725 (2) ◽  
pp. 2281-2289 ◽  
Author(s):  
Matthew D. Klimek ◽  
S. D. Points ◽  
R. C. Smith ◽  
R. L. Shelton ◽  
R. Williams

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