The non-radial propagation of coronal streamers in minimum activity epoch

Details The non-radial propagation of coronal streamers in minimum activity epoch The non-radial propagation of coronal streamers in minimum activity epoch

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..264..292t&link_type=abstract

Solar and Stellar Variability: Impact on Earth and Planets, Proceedings of the International Astronomical Union, IAU Symposium,

Astronomy and Astrophysics

Astronomy

Sun: Corona, Activity, Fundamental Parameters

Scientific paper

We have analyzed the shape of the solar corona using the data of daily observations with Mark-3/4 (1980-2008) and SOHO/Lasco-2 (1996-2008) telescopes. The angles of deviation of coronal rays from the radial direction Δθ vary cyclically, reaching the maximum deviation towards the solar equator at the minimum of the solar activity. At the minimum of the 24-th cycle of activity, the Δθ angles were smaller than they were at the minimum of the 22-nd and 23-rd cycles.
We also analyzed of the solar structure corona during eclipses for minimum activity from 1870 till 2008. We examined changes in the index, which characterizes the angle of large coronal streamers to the equatorial plane. It has been shown that the index has been smoothly changing during the last 140 years. The maximal value of an index was during 17-19 activity cycles. The minimal values are reached in the end of 19 centuries and at the present time.
We consider the relations between the angles of deviation of coronal rays at the minimum of activity, the parameters of the global magnetic field of the Sun, and the amplitude of the subsequent cycle of activity, and discuss the hypothesis that the variations of the inclination of coronal rays may affect the parameters of the solar wind and the indices of geomagnetic perturbations at the minima of the solar activity cycles.

Affiliated with

Also associated with

No associations

Rating

The non-radial propagation of coronal streamers in minimum activity epoch does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The non-radial propagation of coronal streamers in minimum activity epoch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The non-radial propagation of coronal streamers in minimum activity epoch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1095799