57. 5 MHz observations of extended nonthermal sources in the galactic plane
Journal Article
·
· Astron. J.; (United States)
OSTI ID:6606645
The sources that appear in absorption against the nonthermal galactic background in the present radio-continuum maps of two fields in the galactic plane are identified as H II regions. Three extended sources that are observed in emission are classified as SNRs on the basis of derived spectral index values. The objects are G8.7-0.1, which is the extended component of the W30 region, G18.1-0.2, and G19.96-0.18; this last is noted to have a flat radio spectrum and a filled-center morphology, and is suggested to be a Crab-like SNR. 35 references.
- Research Organization:
- Maryland Univ., College Park
- OSTI ID:
- 6606645
- Journal Information:
- Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 92; ISSN ANJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
COSMIC RADIO SOURCES
EMISSION SPECTRA
FLUX DENSITY
GALAXIES
H2 REGIONS
MAPS
MILKY WAY
PULSARS
RADIANT FLUX DENSITY
SPECTRA
SUPERNOVA REMNANTS
Radio & X-Ray Sources
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
COSMIC RADIO SOURCES
EMISSION SPECTRA
FLUX DENSITY
GALAXIES
H2 REGIONS
MAPS
MILKY WAY
PULSARS
RADIANT FLUX DENSITY
SPECTRA
SUPERNOVA REMNANTS