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Auroral Current and Electrodynamics Structure (ACES) Observations of Ionospheric Feedback in the Alfven ResonatorIn 2009, the Auroral Current and Electrodynamics Structure (ACES) High and Low sounding rockets were launched from the Poker Flat Rocket Range (PFRR) in Alaska, with the science objective of gathering in-situ data to quantify current closure in a discrete auroral arc. As ACES High crossed through the return current of an arc (that was monitored using an all sky camera from the ground at Fort Yukon), its instruments recorded clear Alfv nic signatures both poleward and equatorward of the return current region, but not within the main region of the return current itself. These data provide an excellent opportunity to study ionospheric feedback and how it interacts with the Alfv n resonator. We compare the observations with predictions and new results from a model of ionospheric feedback in the ionospheric Alfv n resonator (IAR) and report the significance and impact of these new data for the Magnetosphere-Ionosphere Coupling in the Alfv n Resonator (MICA) rocket mission to launch from PFRR this winter. MICA s primary science objectives specifically focus on better understanding the small-scale structure that the model predicts should exist within the return current region.
Document ID
20110023312
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Cohen, Ian J.
Lessard, Marc
Lund, Eric J.
Bounds, Scott R.
Kletzing, Craig
Kaeppler, Stephen R.
Sigsbee, Kristine M.
Streltsov, Anatoly V.
Labelle, James W.
Dombrowski, Micah P.
Pfaff, Robert F.
Rowland, Doug
Jones, Sarah (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Anderson, Brian Jay
Heinselman, Craig J.
Gjerloev, Jesper W.
Dudok de Wit, Thierry
Date Acquired
August 25, 2013
Publication Date
December 5, 2011
Subject Category
Space Sciences (General)
Report/Patent Number
GSFC.ABS.5338.2011
Meeting Information
Meeting: 2011 Fall American Geophysical Union
Location: San Francisco, CA
Country: United States
Start Date: December 5, 2011
End Date: December 9, 2011
Sponsors: American Geophysical Union
Distribution Limits
Public
Copyright
Public Use Permitted.

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