Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jgr...104.9735z&link_type=abstract
Journal of Geophysical Research, Volume 104, Issue A5, p. 9735-9752
Astronomy and Astrophysics
Astrophysics
35
Solar Physics, Astrophysics, And Astronomy: Coronal Holes, And Astronomy: Magnetic Fields, And Astronomy: Corona
Scientific paper
The August 27, 1996, boot-shaped coronal hole is shown to rotate nearly rigidly at a rate of 13.25°/day, greater than the equatorial rotation rate of bipolar magnetic regions such as active regions and plages. The day-to-day variation of the coronal hole border is determined by comparing the rigid rotation projection of the disk-center hole boundary to coronal hole boundaries observed in successive daily coronal images. To determine the influence of the changing photospheric field on the location of the coronal hole boundary, a better approximation of the instantaneous global magnetic field distribution is developed and used as input to a potential-field source-surface model to compute the foot-point areas of open field lines. Day-to-day variations of the coronal hole boundary may be caused by changes of the magnetic field and plasma properties in the corona, as well as by the changing photospheric field.
Hoeksema Jon Todd
Scherrer Philip H.
Zhao Xue Pu
No associations
LandOfFree
Changes of the boot-shaped coronal hole boundary during Whole Sun Month near sunspot minimum 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 Changes of the boot-shaped coronal hole boundary during Whole Sun Month near sunspot minimum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Changes of the boot-shaped coronal hole boundary during Whole Sun Month near sunspot minimum will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1377515