The Solar Cycle Dependence of Active Region Properties

Details The Solar Cycle Dependence of Active Region Properties The Solar Cycle Dependence of Active Region Properties

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh53b..01h&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH53B-01

Astronomy and Astrophysics

Astrophysics

[7519] Solar Physics, Astrophysics, And Astronomy / Flares, [7524] Solar Physics, Astrophysics, And Astronomy / Magnetic Fields, [7529] Solar Physics, Astrophysics, And Astronomy / Photosphere, [7536] Solar Physics, Astrophysics, And Astronomy / Solar Activity Cycle

Scientific paper

The solar cycle dependence of global active region (AR) emergence and dynamics is analysed using the SolarMonitor Active Region Tracker (SMART), which automatically detects and characterises magnetic flux concentrations using full-disk magnetograms. SMART is run on a magnetogram data set ranging from 1997 to 2009, resulting in measurements of each AR on disk each day. AR properties such as heliographic location, orientation, magnetic flux, flux imbalance, Schrijver's R value, Falconer's WLSG proxy for non-potentiality, and flare productivity are compared over cycle 23. We find several solar cycle modulations in the globally summed AR flux which may help to characterize the subsurface solar dynamo as well as global magnetic flux transport. The global flare index is better correlated to the global R value than WLSG or magnetic flux. Also, the emergence of highly non-potential, flare-productive ARs is found to be more confined in latitude than ARs in general, with little dependence on the phase of the solar cycle.

Affiliated with

Also associated with

No associations

Rating

The Solar Cycle Dependence of Active Region Properties 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 Solar Cycle Dependence of Active Region Properties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Solar Cycle Dependence of Active Region Properties will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1512186