Events at Physics |
Events During the Week of January 5th through January 12th, 2014
Monday, January 6th, 2014
- No events scheduled
Tuesday, January 7th, 2014
- No events scheduled
Wednesday, January 8th, 2014
- No events scheduled
Thursday, January 9th, 2014
- NPAC (Nuclear/Particle/Astro/Cosmo) Forum
- New Results from VERITAS Long-Term Observations of Hard-Spectrum Blazars
- Time: 2:30 pm
- Place: 4274 Chamberlin Hall
- Speaker: Arun Madhavan , Iowa State
- Abstract: Blazars are a class of extragalactic objects, which produce tightly collimated relativistic jets of plasma oriented along our line of sight. These jets contain high energy particles which, on occasion, give rise to TeV gamma-ray emission. The VERITAS collaboration has conducted long-term observations of several blazar sources with especially hard intrinsic gamma-ray spectra. Gamma-ray observations of distant blazar sources have emerged as an effective probe of the Universe's diffuse Extragalactic Background Light (EBL), thanks largely to characteristic spectral signatures imprinted by electron-positron pair production interactions that occur when TeV gamma-rays encounter soft photons from the EBL. I will present current results from the long-term blazar monitoring program in the context of EBL studies, as well as an overview of novel techniques which I have implemented in the VERITAS analysis chain to improve the instrument's reconstruction of gamma-ray spectra.
- Host: Vandenbroucke
Friday, January 10th, 2014
- No events scheduled