Temporal variations in the position of the heliospheric equator

Research paper by V. N. Obridko, B. D. Shelting

Indexed on: 16 Aug '08Published on: 16 Aug '08Published in: Astronomy Reports


It is shown that the centroid of the heliospheric equator undergoes quasi-periodic oscillations. During the minimum of the 11-year cycle, the centroid shifts southwards (the so-called bashful-ballerina effect). The direction of the shift reverses during the solar maximum. The solar quadrupole is responsible for this effect. The shift is compared with the tilt of the heliospheric current sheet.