Comparing High-Resolution MHD Simulations of the Present and Preceding Solar Minima

Details Comparing High-Resolution MHD Simulations of the Present and Preceding Solar Minima Comparing High-Resolution MHD Simulations of the Present and Preceding Solar Minima

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsh13c..05m&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SH13C-05

Astronomy and Astrophysics

Astrophysics

[7509] Solar Physics, Astrophysics, And Astronomy / Corona, [7511] Solar Physics, Astrophysics, And Astronomy / Coronal Holes

Scientific paper

It is now evident that the present solar minimum is characterized by unusual properties compared with those of recent solar space-age minima. In particular, when compared with the previous solar minimum (which occurred in 1996), the current cycle has an increased incidence of spotless days, a decreased polar magnetic field strength, decreased in situ magnetic field measurements at Earth orbit and Ulysses, and a decreased solar wind pressure. The present minimum is also characterized by a greater incidence of small equatorial coronal holes that do not visibly connect with the polar coronal holes. We compare high-resolution 3D MHD simulations of the corona during these two intervals to understand the nature of the difference between the present and previous solar minima. To minimize differences in the comparison, our simulations are based on magnetic field data measured with the same instrument, namely the MDI instrument aboard SOHO. We will use these simulations to explore the detailed characteristics of the corona during these two periods, with particular emphasis on understanding the key factors that produce the differences in the observed properties of the solar corona. Research supported by NASA's Heliospheric Theory and Living With a Star Programs, and NSF/CISM.

Affiliated with

Also associated with

No associations

Rating

Comparing High-Resolution MHD Simulations of the Present and Preceding Solar Minima 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 Comparing High-Resolution MHD Simulations of the Present and Preceding Solar Minima, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparing High-Resolution MHD Simulations of the Present and Preceding Solar Minima will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1782035