Rocket-Coronagraph Photometry of the 7 March, 1970 Corona from 3 to 8. 5 Rs (Papers presented at the Proceedings of the International Symposium on the 1970 Solar Eclipse, held in Seattle, U. S. A. , 18-21 June, 1971.)

Details Rocket-Coronagraph Photometry of the 7 March, 1970 Corona from 3 to 8. 5 Rs (Papers presented at the Proceedings of the International Symposium on the 1970 Solar Eclipse, held in Seattle, U. S. A. , 18-21 June, 1971.) Rocket-Coronagraph Photometry of the 7 March, 1970 Corona from 3 to 8. 5 Rs (Papers presented at the Proceedings of the International Symposium on the 1970 Solar Eclipse, held in Seattle, U. S. A. , 18-21 June, 1971.)

Dec 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971soph...21..408b&link_type=abstract

Solar Physics, Volume 21, Issue 2, pp.408-417

Physics

8

Scientific paper

A rocket-borne coronagraph utilizing external occulting disks was used to photograph the solar corona from 3 to 9 R s at 1931 UT on 7 March, 1970. Comparison of the rocket and ground-based observations shows a one-to-one correspondence between major streamers from the inner to the outer corona. In particular streamers over the poles are clearly visible against the background corona from 3 to ≳ 8 R s. These rocket data had a scattered light level of ˜1.2 × 10-10 B s. The derived quiet equatorial and polar K + F corona was within 10% of the absolute brightness of standard coronal models and displayed identical radial gradients to those models. The photometric profiles of the NE limb streamer were analyzed assuming a model in which the core density follows a Gaussian distribution in directions perpendicular to the radius vector. This streamer was assumed to be rooted on the visible disk at 55 to 60° from the plane-of-the-sky as based on K-coronameter and XUV data. An uncertainty of as much as a factor of three still remains for the value of the axis density owing to uncertainty in the line-of-sight dimension of the streamer.

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