SPACE AND COSMIC RAY PHYSICS SEMINAR

University of Maryland
Atlantic Building, Room 2400
4:30 PM Monday, November 24, 2014
Coffee, Tea & Snacks 4:15-4:30 PM

Aram Vartanyan
University of Maryland
Whistler Wave Generation by Continuous High Frequency Heating of the Upper Ionosphere

We present the very first clear experimental observations of whistler waves generated by continuous heating of the upper ionosphere using the HAARP facility. The proposed generation mechanism relies on parametrically excited Lower-Hybrid (LH) waves and their linear and non-linear mode-conversion to whistler waves. After generalizing an existing LH-whistler conversion model, simulation results are presented that are in good agreement with the observed whistler wave spectrum. A combination of qualitative discussions and simulation results explains certain peculiarities observed in the spectrum.


Sponsored by: Department of Physics and the Institute for Physical Science and Technology, University of Maryland. For information call Victoria 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.