[Baps] Dave Brain - Mars magnetosphere - BU seminar - April 26th

[Paul Withers]

-------- Original Message --------
Subject: [Announce] Join IAR/CSP Colloquium 04/26
Date: Wed, 21 Apr 2010 16:12:36 -0400 (EDT)
From: Xiomara Forbez <xio at bu.edu>
Reply-To: xio at bu.edu
To: announce at skynet.bu.edu

Hi everyone,
   Here's the info for next week's seminar!

            IAR/CSP Seminar
         Monday, April 26, 2010
     Refreshments at 3:45pm in CAS 500
      Talk begins at 4:00pm in CAS 502


"The Ins and Outs of Martian Mini-Magnetospheres"

Dave Brain - UC Berkeley

Abstract:
Measurements of magnetic fields and charged particles near Mars made
over the past four decades have taught us about its plasma environment,
upper atmosphere, near-surface radiation environment, subsurface, and
deep interior.  The upper atmosphere and plasma environment of Mars are
of interest because they are the sites of energy exchange between the
planet and its surroundings, dominated by the Sun and solar wind.  For
this reason they may have played a critical role in martian climate
evolution.  A number of recent spacecraft observations demonstrate that
the exchange of particles and energy between the solar wind and
atmosphere is particularly dynamic at Mars because strong localized
crustal magnetic fields form mini-magnetospheres that rotate with the
planet, influencing the motion of charged particles.  I will discuss two
observed influences of crustal fields on particle motion near Mars and
their implications: episodic escape of atmospheric particles via
detached crustal fields and localized energy deposition characterized by
ultraviolet aurora on the Martian night side.


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Paul Withers                            Center for Space Physics
Office  +1 617 353 1531                 Boston University
Fax     +1 617 353 6463                 725 Commonwealth Avenue
Email   withers at bu.edu                  Boston MA 02215, USA
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