Studies of the rotation periods of photospheric magnetic fields in the 20th-22nd solar cycles

Authors
Anan'ev, IV Obridko, VN
Citation
Iv. Anan'Ev et Vn. Obridko, Studies of the rotation periods of photospheric magnetic fields in the 20th-22nd solar cycles, ASTRON REP, 43(12), 1999, pp. 831-837
Citations number
9
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY REPORTS
ISSN journal
10637729 → ACNP
Volume
43
Issue
12
Year of publication
1999
Pages
831 - 837
Database
ISI
SICI code
1063-7729(199912)43:12<831:SOTRPO>2.0.ZU;2-W
Abstract
The rotation periods of solar photospheric magnetic fields are studied as a function of heliolatitude by performing discrete Fourier expansions of syn optic maps from 1964-1994. Observational data from the Mount Wilson, Kitt P eak, and Stanford Observatories are used. Discrete rotation modes and the h eliolatitude regions where they appeared in the 20th-22nd cycles are discus sed, as well as their variations with solar-cycle phase.