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Large Scale Anisotropy Studies with the Pierre Auger Observatory : Volume 7, Issue 2 (18/04/2011)

By M. Grigat1 for the Pierre Auger Collaboration2

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Book Id: WPLBN0003993040
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Reproduction Date: 2015

Title: Large Scale Anisotropy Studies with the Pierre Auger Observatory : Volume 7, Issue 2 (18/04/2011)  
Author: M. Grigat1 for the Pierre Auger Collaboration2
Volume: Vol. 7, Issue 2
Language: English
Subject: Science, Astrophysics, Space
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Grigat&Lt, M., Sup&Gt,, 1&Lt,, /Sup&Gt,, Pierre Auger Collaboration&Lt, F. T., Sup&Gt,,.../Sup&Gt,. (2011). Large Scale Anisotropy Studies with the Pierre Auger Observatory : Volume 7, Issue 2 (18/04/2011). Retrieved from http://www.ebooklibrary.org/


Description
Description: RWTH Aachen University, Phys. Inst. IIIA, Aachen, Germany. The Pierre Auger Observatory in Argentina measures air showers initiated by cosmic rays at EeV energy scales (1 EeV = 1018 eV). An important goal of the collaboration is to study the distribution of arrival directions of the primary particles and quantify potential anisotropies therein. Using data collected by the surface detector (SD) array of the Pierre Auger Observatory since 1 January 2004, we study large scale anisotropies in different energy windows.

Modulations of the event rate within the period of a sidereal day are studied by means of a periodicity analysis accounting for local effects which may induce an artificial anisotropy. We present results for the event rate modulation in right ascension and derive upper limits for the equatorial component of a dipole amplitude (Auger Coll., 2011; Bonino, 2009).


Summary
Large scale anisotropy studies with the Pierre Auger Observatory

Excerpt
Aglietta, M., Alekseenko, V. V., Alessandro, B. et al. [EAS-TOP]: Evolution of the Cosmic-Ray Anisotropy Above 1014 eV, Astrophys. J. Lett., 692, 130–133, 2009.; Bonino, R. for the Pierre Auger Collaboration: Search for sidereal modulation of the arrival directions of events recorded at the Pierre Auger Observatory, Proc. of 31$^\textup{st}$ Int. Cosmic Ray Conf., \L\capitalacute{o}d\capitalacute{z} 2009.; Candia, J., Roulet, E., and Epele, L, N.: Turbulent diffusion and drift in galactic magnetic fields and the explanation of the knee in the cosmic ray spectrum, Cosm. Astropart. Phys., 05, 003, 2003.; Hillas, A. M.: The Origin of Ultra-High-Energy Cosmic Rays, Ann. Rev. Astron. Astrophys., 22, 425–444, 1984.; Di Giulio, C. for the Pierre Auger Collaboration: Energy calibration of data recorded with the surface detectors of the Pierre Auger Observatory, Proc. of 31$^\textup{st}$ Int. Cosmic Ray Conf., \L\capitalacute{o}d\capitalacute{z}, 2009.; Hayashida, N., Honda, K., Honda, M., Inoue, N., Kadota, K., et al. [AGASA]: The Anisotropy of cosmic ray arrival directions around 10**18-eV, Astropart. Phys., 10, 303–311, 1999.; Hillas, A. M.: The energy spectrum of cosmic rays in an evolving universe, Phys. Lett., 24, 677, 1967.; Linsley, J.: Fluctuation effects on directional data, Phys. Rev. Lett., 34, 1530–1533, 1975.; Linsley, J.: Air shower fluctuations, Proc. of 8$^\textup{th}$ Int. Cosmic Ray Conf., 1963.%Jaipur 4 (1963) 77; Mollerach, S. and Roulet, E.: A New method to search for a cosmic ray dipole anisotropy, Cosm. Astropart. Phys., 08, 004, 2005.; Pierre Auger Collaboration: Pierre Auger Collaboration: Search for First Harmonic Modulation in the Right Ascension Distribution of Cosmic Rays Detected at the Pierre Auger Observatory, Astropart. Phys., 34, 627, 2011.; Pierre Auger Collaboration: Atmospheric effects on extensive air showers observed with the Surface Detector of the Pierre Auger Observatory, Astropart. Phys., 32, 89, 2009.; Schwarz, D., Starkman, G. D., Huterer, D., and Copi, C. J.: Is the low-l microwave background cosmic?, Phys. Rev. Lett., 93, 221301, 2004.; Sommers, P.: Cosmic ray anisotropy analysis with a full-sky observatory, Astropart. Phys., 14, 271, 2001.

 

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