Secular decrease in the 927-MHz flux of the supernova remnants Cassiopeia A and Taurus A

Journal Article · Sat Sep 01 04:00:00 EDT 1979 · Sov. Astron. AJ (Engl. Transl.); (United States)

OSTI ID:5556312

Vinyaikin, E N; Razin, V A

Relative measurements of the radio flux density of the supernova remnants Cas A and Tau A at 927-MHz frequency were carried out with the 10-m radio telescope of the Staraya Pustyn' station, Gor'kii Radiophysics Institute, in October--December 1977. The Orion Nebula and the radio galaxies Cygnus A and Virgo A served as comparison sources. Comparison of the results with absolute measurements made in October 1962 indicates that over the 15-yr interval the radio flux of Cas A dropped by (14.2 +- 0.6) % (mean annual decrease, (0.95 +- 0.04) %), while the Tau A flux dropped by (2.7 +- 0.1) % (mean annual decrease, (0.18 +- 0.01) %).

• Research Organization: Gor'kii Radiophysics Institute
• OSTI ID: 5556312
• Journal Information: Sov. Astron. AJ (Engl. Transl.); (United States), Journal Name: Sov. Astron. AJ (Engl. Transl.); (United States) Vol. 23:5; ISSN SAAJA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTRONOMY
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
FLUX DENSITY
GALAXIES
RADIATION FLUX
RADIATIONS
RADIO GALAXIES
RADIOASTRONOMY
RADIOWAVE RADIATION
SUPERNOVA REMNANTS