*************************** ** THE GEM MESSENGER ** *************************** Volume 21, Number 5 May 6, 2011 ---------------------------------------------------------------------- Sunday-Before-the-Workshop Special Session: Response of the Magnetosphere to High-Speed Streams ---------------------------------------------------------------------- From: Mike Liemohn On the Sunday before the joint GEM-CEDAR Workshop, there will be a day of sessions at the Eldorado Hotelšs Sunset Ballroom. There is no extra registration fee, but we ask that you note your intention to attend either via the GEM registration page or with an email to Mike Liemohn. This day of talks and discussion is centered on the phenomena of high- speed stream (HSS) passages past Earth's magnetosphere. These times represent a unique opportunity because the streams often repeat their geomagnetic activity cycle for several solar rotations, providing a natural laboratory for geospace researchers to understand the physical processes of solar wind-magnetosphere energy coupling. In addition, the geomagnetic activity resulting from these solar structures exhibits systematic responses within geospace. This special day is devoted to exploring the causes and consequences of the systematic geomagnetic response during high-speed streams. Of special interest is the comparison of what happens during HSS times with what occurs during other quiet and active times driven by other solar wind structures. This day is sponsored by the NASA Living With a Star Program, through one of their Focused Science Topic (FST) Teams. Now in the FST's final year, this event represents the culmination of the group's activities toward understanding near-Earth particle energization in the near-Earth space environment, focusing on the nightside plasma sheet, ring current, and radiation belts. The FST team chose high- speed streams as a central theme for our group-wide effort, narrowing this down to a few selected events for intense analysis. This 1-day special event will include presentations from investigators in the FST team as well as many from researchers beyond the group. Everyone is welcome to come for the day, hear the talks, and participate in the ongoing discussions (within each session and at the end of the day's agenda). We ask that those planning to attend this special Sunday session to please click the button for this on the GEM registration page. This will allow for an accurate count for ordering break-time refreshments. We look forward to seeing you there! 9:00 - 10:30: Session 1 on HSS global magnetospheric processes 10:30 - 11:00: Break 11:00 - 12:30: Session 2 on HSS near tail/inner mag processes (non RB) 12:30 - 2:00: Lunch (on your own) 2:00 - 3:30: Session 3 on radiation belts during HSS 3:30 - 4:00: Break 4:00 - 5:00: Session 3 part II 5:00 - 6:00: Open discussion, summary, and future plans Session 1: addresses solar wind-magnetosphere coupling during high- speed streams, in particular examining the energy transfer efficiency and mass and energy flow processes. Session 2: focuses on the flow of mass and energy through the magnetosphere during high-speed streams, in particular focusing on the nightside plasma sheet and near-Earth non-relativistic plasma populations. Session 3: examines radiation belt processes during high-speed streams, addressing both the acceleration mechanisms and the loss processes for these high-energy particles in near-Earth space. +-------------------------------------------------------------------+ | To subscribe GEM Messengers, send an e-mail to | | | | with the following command in the body of your e-mail message: | | subscribe gem | | To remove yourself from the mailing list, the command is: | | unsubscribe gem | | | | To broadcast a message to the GEM community, please contact | | Peter Chi at | | | | Please use plain text as the format of your submission. | | | | GEM Messenger is also posted online via newsfeed at | | http://heliophysics.blogspot.com and | | http://www.facebook.com/heliophysics | | | | Back issues are available at ftp://igpp.ucla.edu/scratch/gem/ | | | | URL of GEM Home Page: http://aten.igpp.ucla.edu/gemwiki | | Workshop Information: http://www.cpe.vt.edu/gem/index.html | +-------------------------------------------------------------------+