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STACEE observations of Markarian 421 above 100 GeV and a new method for high-energy spectral analysis

by Carson, Jennifer Elaine, PhD, UNIVERSITY OF CALIFORNIA, LOS ANGELES, 2005, 0 pages; 3208380

Abstract: Markarian 421 is a nearby (z=0.03) blazar that is actively studied to constrain both physical blazar models and models of the extragalactic background light. The Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE), a wavefront-sampling detector sensitive to ∼ 100 GeV gamma rays, detected Mkn 421 during a multiwavelength campaign in early 2004. This thesis covers the 2004 STACEE observations of Mkn 421 and their analysis. The goal of the project was to measure the gamma-ray spectrum of Mkn 421; such a spectral result would be STACEE's first and one of the first from any detector in STACEE's energy range. Achieving this goal required the development of a new method for reconstructing gamma-ray energies from the STACEE data. The reconstruction method is described in detail, and the resulting spectrum is presented. Finally, the implications of the results for understanding high-energy emission mechanisms in AGN are discussed.

Advisor:	Ong, Rene A.
School:	UNIVERSITY OF CALIFORNIA, LOS ANGELES
Source:	DAI-B 67/02, p. 937, Aug 2006
Source Type:	PhD
Subjects:	Astrophysics
Publication Number:	3208380

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