University of Maryland
Atlantic Building, Room 2400
4:30 PM Monday, March 9, 2009
Coffee, Tea & Snacks 4:15-4:30 PM

Jordan Goodman
University of Maryland
New TeV Gamma Sources and a Surprising Cosmic Ray Anisotropy - Recent Results from Milagro

Milagro was a water-Cherenkov air shower array that operated in the Jemez Mountains above Los Alamos, NM from 2000 until 2008. Milagro was sensitive to air showers from 100 GeV through 100 TeV and developed a method for effectively rejecting hadron induced showers to provide a first wide-field look at the TeV gamma-ray sky. With the recent release of the Fermi (GLAST) bright source list, we have the opportunity to compare what is seen in the TeV with the bright sources by Fermi in the GeV. In this talk we will show the results of this comparison including first evidence for a number of newly discovered TeV gamma-ray sources. We also discuss the recent surprising Milagro discovery of two regions of localized excess of cosmic rays on the 10 degree scale visible in the Northern Sky.

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.