Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993azh....70..443a&link_type=abstract
Astronomicheskij Zhurnal (ISSN 0004-6299), vol. 70, no. 3, p. 443-450.
Astronomy and Astrophysics
Astronomy
5
Astronomical Spectroscopy, Galactic Clusters, Galactic Radiation, Radio Sources (Astronomy), Compact Galaxies, Scintillation
Scientific paper
Interplanetary scintillation observations of compact radio sources in the Perseus cluster were performed at 102 MHz with the Large Phased Array of the Lebedev Physical Institute. The scintillating sources were observed in NGC 1275, NGC 1265, and IC 310. Under the assumption that the spectrum of the scintillating radio source in the nucleus of NGC 1275 has an LF cutoff due to self-absorption of synchrotron radiation, the following estimates were made: H approximately equal to 10 exp -5 Gauss, n(e) approximately equal to 10 exp -6 cu cm, E(H) approximately equal to 10 exp 47 erg, and E(e) approximately equal to 10 exp 55 erg in the nucleus of NGC 1275, at a scale of 0.03 arcsec. Relativistic particles can escape from the nucleus of NGC 1275 because their energy is much greater than the magnetic field energy. The 102-MHz map of Perseus was obtained with a resolution of 49 x 28 arcmin. No evidence was found for the existence of the 1-deg cluster halo.
Artyukh Vadim S.
Ogannisyan M. A.
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