Timescale Analysis of Spectral Time Lags

Details Timescale Analysis of Spectral Time Lags Timescale Analysis of Spectral Time Lags

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....4.2541l&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

Understanding the energy dependence of arrival times of observed high energy particles or photons is of importance in studying cosmic ray physics and high energy astrophysics. Conventional cross-correlation technique has limited resolution in time lag detection and can not be used to get timescale spectra of spectral lags. The Fourier spectral technique often fails in the region of high Fourier frequencies (short time scales). A modified cross-correlation algorithm is intro duced in this paper. With the modified cross-correlation function, the sensitivity and precision of detecting spectral time lags can be significantly improved and timescale spectrum of time lag can be derived.

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