102 MHZ OBSERVATIONS OF THE PERSEUS CLUST ER OF GALAXIES

Citation
Vs. Artyukh et Ma. Hovannissian, 102 MHZ OBSERVATIONS OF THE PERSEUS CLUST ER OF GALAXIES, ASTRONOM ZH, 70(3), 1993, pp. 443-450
Citations number
35
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ASTRONOMICESKIJ ZURNAL
ISSN journal
00046299 → ACNP
Volume
70
Issue
3
Year of publication
1993
Pages
443 - 450
Database
ISI
SICI code
0004-6299(1993)70:3<443:1MOOTP>2.0.ZU;2-B
Abstract
Interplanetary scintillation observations of compact radio sources in the Perseus duster have been made at 102 MHz with the Large Phased Arr ay of the Lebedev Physical Institute. The scintillating sources were o bserved in NGC 1275, NGC 1265 and IC 310. Assuming that the spectrum o f the scintillating radio source in the nucleus of NGC 1275 has a low- frequency cutoff due to self-absorption of synchrotron radiation, we h ave estimated H is similar to 10(-5) gauss, n(e) is similar to 10(-6) cm-3, E(H) is similar to 10(47) erg, E(e) is similar to 10(55) erg in the nucleus of NGC 1275, at a scale 0,03''. Relativistic particles can escape from the nucleus of NGC 1275 because their energy is much grea ter than the magnetic field energy. The 102 MHz map of the Perseus clu ster has been obtained with a resolution 49' x 28'. No evidence was fo und for the existence of the 1-degree cluster halo.