scholarly journals The Polarization of Extended Radio Sources at 6 cm Wavelength. II. Galactic Sources

1971 ◽  
Vol 24 (4) ◽  
pp. 913 ◽  
Author(s):  
JB Whiteoak ◽  
FF Gardner
Keyword(s):  
Supernova Remnants ◽  
Radio Sources ◽  
Ionic Medium ◽  
Extended Radio ◽  
Polarization Characteristics ◽  
Simple Expansion ◽  
Galactic Sources

Maps are presented of the polarization and total intensity distributions over the supernova remnants 13S6A, MSH 15-56, ROW 103, and W44. They were obtained at 6 cm wavelength with a 4' arc resolution. It has not proved possible to interpret the polarization characteristics in terms of a simple expansion against the interstellar magneto ionic medium.

Jets associated with supernova remnants and other galactic nonthermal sources

1986 ◽  
Vol 64 (4) ◽  
pp. 482-483
Author(s):  
R. H. Becker
Keyword(s):  
Black Holes ◽  
Neutron Star ◽  
Supernova Remnants ◽  
Binary Systems ◽  
Radio Sources ◽  
Nonthermal Radio ◽  
Galactic Sources ◽  
Relativistic Particles

Accreting neutron star or black holes in binary systems can, under appropriate circumstances, eject jets of particles into their environment. This is most readily observed in SS433, Sco X-1, and Cyg X-3. We infer the presence of the injection of relativistic particles in a number of other galactic sources where actual jets have not been observed. In some cases the energy imparted results in nonthermal radio sources comparable in size to supernova remnants.

scholarly journals Study of the Galactic radio sources in the SCORPIO survey resolved by ATCA at 2.1 GHz

2019 ◽  
Author(s):  
A Ingallinera ◽  
G Umana ◽  
C Trigilio ◽  
R Norris ◽  
T M O Franzen ◽  
...  
Keyword(s):  
Supernova Remnants ◽  
Galactic Plane ◽  
Radio Sources ◽  
H Ii Regions ◽  
Extended Radio ◽  
Galactic Source ◽  
Extended Sources ◽  
Early Operations ◽  
First Time ◽  
Source Extraction

Abstract We present a catalogue of a large sample of extended radio sources in the SCORPIO field, observed and resolved by the Australia Telescope Compact Array. SCORPIO, a pathfinder project for addressing the early operations of the Australia SKA Pathfinder, is a survey of ∼5 square degrees between 1.4 and 3.1 GHz, centered at l = 343.5○, b = 0.75○ and with an angular resolution of about 10 arcsec. It is aimed at understanding the scientific and technical challenges to be faced by future Galactic surveys. With a mean sensitivity around $100\ \mu \mathrm{Jy\ beam}^{-1}$ and the possibility to recover angular scales at least up to 4 arcmin, we extracted 99 extended sources, 35 of them detected for the first time. Among the 64 known sources 55 had at least a tentative classification in literature. Studying the radio morphology and comparing the radio emission with infrared we propose as candidates 6 new H ii regions, 2 new planetary nebulae, 2 new luminous blue variable or Wolf–Rayet stars and 3 new supernova remnants. This study provides an overview of the potentiality of future radio surveys in terms of Galactic source extraction and characterization and a discussion on the difficulty to reduce and analyze interferometric data on the Galactic plane.

scholarly journals Supernova Remnants as Radio Sources

1968 ◽  
Vol 21 (5) ◽  
pp. 739 ◽  
Author(s):  
MJL Kesteven
Keyword(s):  
Spectral Index ◽  
Radio Telescope ◽  
Supernova Remnants ◽  
Supernova Remnant ◽  
Radio Sources ◽  
Evolutionary Path ◽  
Contour Maps ◽  
Galactic Sources ◽  
Cross Type

The results of a survey with the 1 mile Molonglo cross-type radio telescope of nonthermal galactic sources are discussed in terms of supernova remnant theories. The contour maps obtained indicate that most sources are consistent with a portion of a shell of emission. The results suggest that a remnant's spectral index is independent of its age. A supernova remnant evolutionary path is also derived, and compared with the path predicted by the various theories.

The Gaseous Environments of Powerful Extended Radio Sources

1997 ◽  
Vol 480 (1) ◽  
pp. 96-114 ◽  
Author(s):  
Greg F. Wellman ◽  
Ruth A. Daly ◽  
Lin Wan
Keyword(s):  
Radio Sources ◽  
Extended Radio

scholarly journals Study of the extended radio emission of two supernova remnants and four planetary nebulae associated with MIPSGAL bubbles

2014 ◽  
Vol 445 (4) ◽  
pp. 4504-4514 ◽  
Author(s):  
A. Ingallinera ◽  
C. Trigilio ◽  
G. Umana ◽  
P. Leto ◽  
C. Agliozzo ◽  
...  
Keyword(s):  
Radio Emission ◽  
Supernova Remnants ◽  
Planetary Nebulae ◽  
Extended Radio

scholarly journals The H.E.S.S. Galactic Plane Survey

2009 ◽  
Vol 5 (H15) ◽  
pp. 808-808
Author(s):  
Emma de Oña-Wilhelmi
Keyword(s):  
Supernova Remnants ◽  
Binary Systems ◽  
Galactic Plane ◽  
Giant Molecular Clouds ◽  
Pulsar Wind Nebulae ◽  
Compact Binary ◽  
Pulsar Wind ◽  
Star Formation Regions ◽  
Galactic Sources ◽  
Gps Observations

AbstractThe H.E.S.S. Galactic Plane Survey (GPS) has revealed a large number of Galactic Sources, including Pulsar Wind Nebulae (PWN), Supernova Remnants (SNRs), giant molecular clouds, star formation regions and compact binary systems, as well as a number of unidentified objects, or dark sources, for which no obvious counterparts at other wavelengths have yet been found. We will review the latest results from the GPS observations and discuss the most interesting cases.

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.

scholarly journals Compact Structure in Continuum Radio Sources

1991 ◽  
Vol 44 (6) ◽  
pp. 771
Author(s):  
RT Schilizzi
Keyword(s):  
Supernova Remnants ◽  
Radio Galaxies ◽  
Radio Sources ◽  
Compact Structure ◽  
Scale Structures ◽  
Continuum Radio

Present-day VLBI networks make observations of compact structure in a wide variety of radio sources. Examples are shown of milli-arcsecond scale structures in radio galaxies, quasars, stars and supernova remnants.

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