On the structure of coronal streamer belts

Details On the structure of coronal streamer belts On the structure of coronal streamer belts

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...103.2021e&link_type=abstract

Journal of Geophysical Research, vol. 103, p. 2021

Physics

10

Solar Corona, Brightness Distribution, Plasma Density, Spatial Distribution, Coronal Mass Ejection, Angular Distribution, Solar Radiation, Rotating Plasmas

Scientific paper

In an attempt to separate the temporal and spatial variations in polarization brightness (plasma density) along the coronal streamer belt, a study is made of the parts of the belt which are longitudinally aligned with the west or east limb of the sun. It is shown that the brightness distribution along streamer belts is inhomogeneous with relative brightness variations of about 1.1-2.0. Streamer belts consist of a sequence of coronal rays (streamers), each of which at distances of greater than 3 solar radii from the solar center has a cross section with a typical angular size of about 10-70 deg along the belt and about 10-30 deg across the belt with neighboring rays separated by L of about 10-70. Examples from CRs 1591 and 1592 show that in the absence of the influence of coronal mass ejection, the distribution of streamer rays along the streamer belt can be stable for nearly two complete Carrington rotations.

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