University of Maryland
Atlantic Building, Room 2400
4:30 PM Monday, March 31, 2014
Coffee, Tea & Snacks 4:15-4:30 PM

James Klimchuk
Why is the Solar Corona So Hot?

This fundamental question has challenged space scientists for decades. At temperatures of several million degrees, the corona is hundreds of times hotter than the solar surface, so heat cannot simply flow upward against the temperature gradient. (The same is true on other stars.) It is widely believed that the energy responsible for the extreme temperatures is extracted from the stressed magnetic fields that permeate the corona. The details of how this occurs are still, however, a matter of vigorous debate. Finding the answer is more than just a fascinating intellectual exercise. X-ray and UV radiation from the corona is an important driver of the Earth’s upper atmosphere. In this talk, I will review our current understanding of the coronal heating problem and discuss exciting recent advances.

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.