University of Maryland
Atlantic Building, Room 2400
4:30 PM Monday, October 21, 2013
Coffee, Tea & Snacks 4:15-4:30 PM

Matthew Hill
Johns Hopkins University Applied Physics Laboratory
Voyager 1 Observations of Large Galactic Cosmic Ray Anisotropies in Interstellar Space

Voyager 1 entered a local region of the interstellar medium in August of 2012 as evidenced by the observed galactic cosmic ray intensity increases and spectral unfolding, the disappearance of particles of solar origin, and the plasma-wave based detection of high density plasma thought to be consistent only with cold interstellar plasma. This region, however, is not pristine and appears to be significantly influenced by the heliosphere; the magnetic field is still Parker-like and there are unprecedentedly large, varying anisotropies in the galactic cosmic ray intensities. I will focus on the galactic cosmic ray observations we have made with the Low Energy Charged Particle (LECP) experiment but will also discuss a physical explanation for the anisotropies being put forth by the LECP team.

Sponsored by: Department of Physics and the Institute for Physical Science and Technology, University of Maryland. For information call Catha Stewart at (301) 405-4811 or go to the UMD Space Physics group seminar web site.

There is free parking after 4:00 PM in lot B (the big parking garage across the street from the ATL building). There are a limited number of spaces in lot Q next to the new ATL wing with free parking after 4PM even when there is a basketball game on campus.