Four variable radio sources at 408 MHz

Details Four variable radio sources at 408 MHz Four variable radio sources at 408 MHz

Dec 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972apl....12..193h&link_type=abstract

Astrophysical Letters, 12, 193-200 (1972)

Astronomy and Astrophysics

Astrophysics

85

Scientific paper

Evidence is presented for large fractional variations in the 408-MHz emission from two quasi-stellar objects (CTA 102 and 3C 454.3) and two radio galaxies (PKS 1504-16.7 and 1524-13). In each source significant changes in flux density have occurred on a time scale of a few months. If the variations observed at 408 MHz are intrinsic to the radiating regions, they raise some inportant atsrophysical questions concerning the physical processes operating in non-thermal radio sources.

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