High-resolution radio observations of three supernova remnants

1976 ◽  
Vol 204 ◽  
pp. 427 ◽  
Author(s):  
R. H. Becker ◽  
M. R. Kundu
Keyword(s):  
High Resolution ◽  
Supernova Remnants ◽  
Radio Observations

High-resolution radio observations of five supernova remnants

1981 ◽  
Vol 195 (1) ◽  
pp. 89-99 ◽  
Author(s):  
J. L. Caswell ◽  
D. K. Milne ◽  
K. J. Wellington
Keyword(s):  
High Resolution ◽  
Supernova Remnants ◽  
Radio Observations

scholarly journals Radio Emission from the Supernova Remnant Vela-X

1968 ◽  
Vol 21 (2) ◽  
pp. 201 ◽  
Author(s):  
DK Milne
Keyword(s):  
Magnetic Field ◽  
High Resolution ◽  
Radio Emission ◽  
Spectral Index ◽  
Supernova Remnants ◽  
Supernova Remnant ◽  
Magnetic Field Direction ◽  
Radio Observations ◽  
Optical Identification ◽  
Polarization Measurements

Radio observations are presented of the fairly large galactic complex Vela-X, Y, and Z. These sources are believed to be the remnant of a supernova having an optical identification with the filamentary nebula Stromlo 16. The brightness distributions, obtained at four frequencies, indicate an open annular structure reminiscent of other supernova remnants. The variation of spectral index over the region is investigated and shows that the radiation is substantially nontherm81, the integrated fluxes yielding a spectral index of -0,3. A high resolution distribution of magnetic field direction is deduced from polarization measurements made at three frequencies; a circumferential magnetic field is a possible interpretation of the field orientations.

scholarly journals Deep Imaging of SNRs at Low Frequencies Using the GMRT

2002 ◽  
Vol 199 ◽  
pp. 307-308
Author(s):  
Sanjay Bhatnagar
Keyword(s):  
High Resolution ◽  
Supernova Remnants ◽  
Thermal Emission ◽  
Large Range ◽  
High Resolution Imaging ◽  
Radio Observations ◽  
Low Frequencies ◽  
Deep Imaging ◽  
The Galaxy ◽  
Resolution Imaging

Radio observations of large Supernova Remnants (SNRs) in the Galaxy are plagued with the problems of confusion and limitations of synthesis telescopes in imaging the emission at large angular scales. Since most SNRs are brighter at low radio frequencies, and the contamination due to thermal emission is reduced, deep and high resolution imaging of Galactic SNRs at meterwave lengths is most useful in their detection and classification. Relatively high resolution and sensitivity over a large range of angular scales provided by the GMRT at meterwave lengths makes it an ideal instrument for detailed multi-frequency imaging of Galactic SNRs.

scholarly journals High-resolution radio observations of the Seyfert galaxy NGC 1068

1983 ◽  
Vol 202 (3) ◽  
pp. 647-656 ◽  
Author(s):  
A. Pedlar ◽  
R. V. Booler ◽  
R. E. Spencer ◽  
O. J. Stewart
Keyword(s):  
High Resolution ◽  
Seyfert Galaxy ◽  
Radio Observations ◽  
Ngc 1068

Supernova Remnant Searches at Molonglo

1984 ◽  
Vol 5 (4) ◽  
pp. 537-540 ◽  
Author(s):  
A. J. Turtle ◽  
B. Y. Mills
Keyword(s):  
Supernova Remnants ◽  
Supernova Remnant ◽  
Magellanic Clouds ◽  
Radio Observations ◽  
X Ray

A catalogue of 38 supernova remnants (SNRs) identified in the Large and Small Magellanic Clouds from X-ray, optical and radio observations has recently been presented by Mills et al. (1984). One important consideration is the completeness of this catalogue and of the Galactic catalogues with which it is compared. These are currently being investigated.

scholarly journals Some Observations of Shell-type Galactic Radio Sources

1967 ◽  
Vol 20 (3) ◽  
pp. 297 ◽  
Author(s):  
ER Hill
Keyword(s):  
Radio Emission ◽  
Spherical Symmetry ◽  
Supernova Remnants ◽  
Supernova Remnant ◽  
Milky Way ◽  
Radio Sources ◽  
Radio Observations ◽  
Shell Type ◽  
Rosette Nebula ◽  
Galactic Radio

Radio evidence for two new supernova remnants in the Southern Milky Way is presented. Some new observations of the known supernova remnant, source 1439-62, and of the Rosette nebula, a shell source but not a supernova remnant, are also presented. The problem of finding model shells to fit the radio observations is considered and it is shown that the radio emission from 1439-62 is unlikely to originate in a shell with spherical symmetry.

High-resolution observations of southern supernova remnants

1980 ◽  
Vol 190 (4) ◽  
pp. 881-889 ◽  
Author(s):  
J. L. Caswell ◽  
R. F. Haynes ◽  
D. K. Milne ◽  
K. J. Wellington
Keyword(s):  
High Resolution ◽  
Supernova Remnants
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