Lunar occultation of three Markarian galaxies at a frequency of 327 MHz

Details Lunar occultation of three Markarian galaxies at a frequency of 327 MHz Lunar occultation of three Markarian galaxies at a frequency of 327 MHz

Nov 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975afz....11..637s&link_type=abstract

Astrofizika, vol. 11, Nov. 1975, p. 637-641. In Russian.

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Galactic Radiation, Lunar Occultation, Markarian Galaxies, Radio Galaxies, Brightness Temperature, Emission Spectra, Flux Density, Galactic Nuclei, Red Shift, Size (Dimensions)

Scientific paper

The paper reports observations of lunar occultations of Markarian galaxies 369, 370, and 384, which were conducted at 327 MHz. It is noted that the occultation of Markarian 384, the faintest and closest of the three, was not clearly tracked at the indicated frequency. Strong hydrogen emission lines were detected in the other two along with evidence of explosive activity. Their radio dimensions are found to be somewhat smaller than their optical dimensions, indicating that the radio emission originates in dense central regions which are not greater than a few kiloparsecs. It is shown that their radio emission is nonthermal in nature and that their frequency spectra are rather steep.

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