Eclipse of Radio Emission on 7 March, 1970 at 10 cm Wavelength from the Active Region Associated with McMath Plage 10618 (Papers presented at the Proceedings of the International Symposium on the 1970 Solar Eclipse, held in Seattle, U. S. A. , 18-21 June,

Details Eclipse of Radio Emission on 7 March, 1970 at 10 cm Wavelength from the Active Region Associated with McMath Plage 10618 (Papers presented at the Proceedings of the International Symposium on the 1970 Solar Eclipse, held in Seattle, U. S. A. , 18-21 June, Eclipse of Radio Emission on 7 March, 1970 at 10 cm Wavelength from the Active Region Associated with McMath Plage 10618 (Papers presented at the Proceedings of the International Symposium on the 1970 Solar Eclipse, held in Seattle, U. S. A. , 18-21 June,

Dec 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971soph...21..460m&link_type=abstract

Solar Physics, Volume 21, Issue 2, pp.460-468

Physics

1

Scientific paper

Radio emission of 10 cm from the whole disk was monitored during the eclipse of 7 March, 1970 by the Aerospace San Fernando Observatory and AFCRL Sagamore Hill Solar Radio Observatory. For both, the active region associated with sunspot 17 774, McMath region 10 618, was occulted. At Sagamore Hill the entire region was occulted. At SFO only the southern half of the sunspot group and the hydrogen plage southeast of the group was occulted. This region produced an importance class 1N flare and 10 cm burst beginning at 1601 UT and was enhanced about 15 flux units above the mean value of 190 units at onset. The Sagamore Hill data indicate the region was about 3.8' and contributed about 0.21 of the total radiation from the disk. The SFO data gave about 5.4' for the size of the southern half of the region and showed that about 0.20 of the total radiation came from there. Radiation came primarily from the hydrogen plage southeast of the major spot of the group. The hydrogen plage northwest of the group did not contribute significantly. Although the small flare occurred in this region, it did not contribute more than 0.04 of the total (0.20 of the active region) at occultation of region 10 618.

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