Low-latitude active longitudes on the sun and in interplanetary space

Details Low-latitude active longitudes on the sun and in interplanetary space Low-latitude active longitudes on the sun and in interplanetary space

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991baicz..42...76b&link_type=abstract

Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 42, no. 2, April 1991, p. 76-84.

Astronomy and Astrophysics

Astronomy

9

Interplanetary Space, Solar Activity, Solar Longitude, Latitude, Solar Rotation, Sunspots

Scientific paper

Following a short review of the history of the development of the active longitude concept, several graphs of the longitudinal distribution of various low-altitude phenomena of solar activity published by various authors were reprocessed. The inclinations of the active longitudes found were calculated. A summary picture of all these inclinations demonstrates the concentration of such active longitudes into two main directions. Two values of synodic rotation: 26.77 days and 27.16 days, corresponding to these two types of low-altitude active longitudes, rotating faster than Carrington's rotation. The summary graph of all active longitudes belonging to these two types shows that active longitudes of different activity phenomena and from different authors overlap to a relatively high degree and that they run at least through three eleven-year cycles. The first of these active longitudes moves around the whole sun in about 45-55 rotations and the second one in about 200 Carringtons' rotations.

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