Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter

Abreu, P.; Aglietta, M.; Ahn, E.J.; Boháčová, Martina; Chudoba, Jiří; Kárová, Tatiana; Mandát, Dušan; Nečesal, Petr; Nožka, Libor; Nyklíček, M.; Palatka, Miroslav; Pech, Miroslav; Prouza, Michael; Řídký, Jan; Schovancová, Jaroslava; Schovánek, Petr; Šmída, Radomír; Trávníček, Petr

doi:https://dx.doi.org/10.1016/j.astropartphys.2010.08.010

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Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter

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SYSNO ASEP	0354533
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter
Author(s)	Abreu, P. (PT) Aglietta, M. (IT) Ahn, E.J. (US) Boháčová, Martina (FZU-D)_{RID, ORCID} Chudoba, Jiří (FZU-D)_{RID, ORCID} Kárová, Tatiana (FZU-D) Mandát, Dušan (FZU-D)_{RID, ORCID} Nečesal, Petr (FZU-D) Nožka, Libor (FZU-D)_{RID, ORCID} Nyklíček, M. (CZ) Palatka, Miroslav (FZU-D)_{RID, ORCID, SAI} Pech, Miroslav (FZU-D)_{RID, ORCID} Prouza, Michael (FZU-D)_{RID, ORCID} Řídký, Jan (FZU-D)_{RID, ORCID} Schovancová, Jaroslava (FZU-D) Schovánek, Petr (FZU-D)_{RID, ORCID} Šmída, Radomír (FZU-D)_RID Trávníček, Petr (FZU-D)_{RID, ORCID}
Source Title	Astroparticle Physics. - : Elsevier - ISSN 0927-6505 Roč. 34, č. 5 (2010), s. 314-326
Number of pages	13 s.
Language	eng - English
Country	NL - Netherlands
Keywords	cosmic ray ; UHECR
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	1M06002 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	LA08016 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	KJB100100904 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	LC527 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	KJB300100801 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z10100502 - FZU-D (2005-2011)
	AV0Z10100522 - FZU-D (2005-2011)
UT WOS	000284669100007
DOI	10.1016/j.astropartphys.2010.08.010
Annotation	Data collected by the Pierre Auger Observatory through 31 August 2007 showed evidence for anisotropy in the arrival directions of cosmic rays above the Greisen-Zatsepin-Kuz'min energy threshold, 6 x 1019 eV. The anisotropy was measured by the fraction of arrival directions that are less than 3.1° from the position of an active galactic nucleus within 75 Mpc (using the Veron-Cetty and Veron 12th catalog). An updated measurement of this fraction is reported here using the arrival directions of cosmic rays recorded above the same energy threshold through 31 December 2009. The number of arrival directions has increased from 27 to 69, allowing a more precise measurement. The correlating fraction is (38+7-6)%, compared with 21% expected for isotropic cosmic rays. This is down from the early estimate of (69+11-13)%.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2011

Number of the records: 1