Spectral Analysis of Blazars in the Multi-TeV Regime: Using AGN Physics as a Probe of the EBL

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Date/Time:Friday, 05 Oct 2012 from 4:10 pm to 5:00 pm
Location:Room 3
Contact:Massimo Marengo
Phone:515-294-2958
Channel:Astronomy
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Research Seminar by Arun S Madhavan, ISU Physics and Astronomy Department Graduate Student

The spectrum of the extragalactic background light (EBL) provides important scientific information about stellar evolution. Thus far, direct detections of the EBL have proven difficult due to the presence of foreground radiation. Because EBL photons cause energy-dependent attenuation of TeV signals in the extragalactic medium, observed spectral variations in blazars are useful in constraining EBL scenarios. I will discuss the technique of ground-based gamma-ray astronomy, as well as its application to the measurement of multi-TeV blazar spectral analysis.