Events Calendar

JSI Colloquium - Gordon Holman
Monday 26 February 2018, 15:30 - 16:30
Contact Susan Lehr
Location Room 1136 Physical Sciences Complex

"Solar Flare X-Ray Spectra in the 21st Century"

Speaker:  Gordon D. Holman (NASA/GSFC)

High-energy X-rays from solar flares were merely a curiosity when they were discovered with a Geiger counter on a balloon flight sixty years ago.  They are now the primary diagnostic for accelerated electrons and the hottest plasma produced in flares.  I will describe how the analysis of flare X-ray spectra evolved from power-law fits to spectra that extend over many orders of magnitude in flux to deducing physical properties of accelerated electrons and their environment.  These spectra are now a critical component for obtaining an understanding of both particle acceleration and the evolution of flares.  I will conclude with a discussion of the importance and future of combined imaging spectroscopy in X-rays and the EUV. 

Parking:  You may park in the Regents Drive Parking Garage located directly across from the Physical Sciences Complex.  Look for the green Pay Station Parking signs and park in any numbered lot.  Please use parking code TBA for this event.  This parking code is good for 02/26/18 only.

Coffee and cookies will be available beginning at 3:00 pm. Talk begins at 3:30 pm.