2019ApJ...886L..18A

Query : 2019ApJ...886L..18A

2019ApJ...886L..18A - Astrophys. J., 886, L18-L18 (2019/November-3)

Large- and medium-scale anisotropies in the arrival directions of cosmic rays observed with KASCADE-Grande.

AHLERS M.

Abstract (from CDS):

We search for anisotropies in the arrival directions of cosmic rays (CRs) observed by the KASCADE-Grande air shower experiment. The analysis is based on public data of about 23.7 million events with reconstructed primary energies above 1 PeV. We apply a novel maximum-likelihood reconstruction method for the CR anisotropy that compensates for spurious anisotropies induced by local detector effects. We find no evidence for a large-scale dipole anisotropy in the data, consistent with official results based on the conventional east-west derivative method. On the other hand, a subset of CRs with a median energy of 33 PeV shows strong evidence for a medium-scale feature with an angular diameter of 40°. After accounting for the look-elsewhere effect, the post-trial significance of this medium-scale feature is at the level of 4σ.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Astronomy data analysis - Cosmic rays

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Cyg Complex reg 20 32 +45.0           ~ 667 0

Query : 2019ApJ...886L..18A

Basic data :
NAME Cyg Complex -- Region defined in the Sky
Other object types: otypes_help 		reg ()
ICRS coord. (ep=J2000) : 		20 32 00.0 +45 00 00 [ ] E ~
FK4 coord. (ep=B1950 eq=1950) : 		20 30 18.9 +44 49 46 [ ]
Gal coord. (ep=J2000) : 		083.0584 +03.1569 [ ]
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Identifiers (3) :
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NAME Cyg Complex NAME Cyg Region NAME Cygnus Region

References (667 between 1850 and 2026) (Total 667)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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