VLA observations of the supernova remnant Puppus A at 327 and 1515 MHz

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Astronomical Journal; (USA)

DOI:https://doi.org/10.1086/115777· OSTI ID:5759782

Dubner, G M; Braun, R; Winkler, P F; Goss, W M ^[1]

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1. Instituto de Astronomia y Fisica del Espacio, Buenos Aires (Argentina) Netherlands Foundation for Radio Astronomy, Dwingeloo (Netherlands) Middlebury College, VT (USA) National Radio Astronomy Observatory, Socorro, NM (USA)

Very Large Array radio images of Puppis A at 327 and 1515 MHz are presented. The observations were performed with the VLA in the C/D and B/C configurations, respectively. The angular resolution is about 77 arcsec x 43 arcsec. The observed radio shell shows signs of interaction between the expanding shock front and the inhomogeneous surrounding medium. An excellent correlation is found between radio and X-ray emission, mainly toward the NE border of the remnant. There is little correspondence between the optical and radio images, suggesting a different origin for the emission. A region of steeper radio spectral index is associated with the highly decelerated eastern periphery. 32 refs.

• OSTI ID: 5759782
• Journal Information: Astronomical Journal; (USA), Journal Name: Astronomical Journal; (USA) Vol. 101; ISSN 0004-6256; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTRONOMY
CORRELATIONS
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
IMAGES
INTERACTIONS
INTERSTELLAR SPACE
ORIGIN
RADIATIONS
RADIOASTRONOMY
RADIOWAVE RADIATION
RESOLUTION
SHOCK WAVES
SPACE
SPECTRA
SUPERNOVA REMNANTS
VISIBLE RADIATION
X-RAY SPECTRA