VLA observations of compact radio sources in the galactic plane - A search for Crab-like supernova remnants

Abstract

view Abstract Citations (17) References (19) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS VLA observations of compact radio sources in the galactic plane : a search for Crab-like supernova remnants. Helfand, D. J. ; Chance, D. ; Becker, R. H. ; White, R. L. Abstract In a search for Crab-like supernova remnants in the Galaxy, 19 compact (<1arcmin.5) radio sources were observed with the VLA. Only the previously known supernova remnant (SNR) G21.5-0.9 has both a centrally peaked brightness distribution and integrated polarization greater than 5%, properties characteristic of Crab-like remnants. The remaining objects are either compact H II regions or extragalactic sources. The authors use these results to set a limit of ⪉5 on the number of undiscovered Crab-like SNR which exist in the Galaxy above a 6-cm flux density of 1 Jy. The implication of this result for the formation rate of galactic Crab-like remnants is discussed. Publication: The Astronomical Journal Pub Date: June 1984 DOI: 10.1086/113576 Bibcode: 1984AJ.....89..819H Keywords: Milky Way Galaxy; Radio Sources (Astronomy); Supernova Remnants; Astronomical Catalogs; Astronomical Maps; Morphology; Polarization Characteristics; Astronomy full text sources ADS | data products SIMBAD (18)