NDLI: Prospective gamma-ray propagation models and comparisons to metamaterial models

Content Provider	IEEE Xplore Digital Library
Author	Weldon, T.P. Adams, R.S. Daneshvar, K. Mulagada, R.K.
Copyright Year	2011
Description	Author affiliation: Department of Electrical and Computer Engineering, University of North Carolina at Charlotte, 28223, USA (Weldon, T.P.; Adams, R.S.; Daneshvar, K.; Mulagada, R.K.)
Abstract	Astronomical observations of gamma-ray bursts can exhibit dispersive behavior where high-energy gamma rays arrive significantly later than low-energy photons. Although the underlying mechanisms for the dispersion are not fully understood, a polynomial model has been proposed for modeling the apparent frequency-dependent photon velocity. The present work considers the impact of this dispersion model on the Helmholtz equation. The result is an extended form of the Helmholtz equation, where additional terms are used to model observed dispersion. The proposed set of equations closely resembles one type of metamaterial model, and therefore exhibits similar behavior. Comparisons are drawn between the gamma-ray models and similar metamaterial models that exhibit right-handed behavior at low frequencies and left-handed behavior at high frequencies. Finally, the overall approach provides a flexible modeling framework that can be adapted as new gamma-ray data become available.
Starting Page	207
Ending Page	210
File Size	569504
Page Count	4
File Format	PDF
ISBN	9781612847399
ISSN	1558058X
e-ISBN	9781612847382
DOI	10.1109/SECON.2011.5752934
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mathematical model Dispersion Metamaterials Equations Photonics Gamma ray bursts Data models
Content Type	Text
Resource Type	Article

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