INVESTIGADORES
GARCIA Beatriz Elena
artículos
Título:
Large scale distribution of ultra high energy cosmic rays detected at the Pierre Auger Observatory with zenith angles up to 80 degrees
Autor/es:
THE PIERRE AUGER COLLABORATION (471 AUTHORS IN ALPHABETICAL ORDER); GARCIA, B
Revista:
ASTROPHYSICAL JOURNAL
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2015 vol. 802 p. 1 - 11
ISSN:
0004-637X
Resumen:
P { margin-bottom: 0.21cm; }
We
present the results of an analysis of the large angular scale
distribution of the arrival directions of cosmic rays with energy
above 4 EeV detected at the Pierre Auger Observatory including for
the fi
rst time events with zenith angle between 60°
and 80°
. We perform two Rayleigh analyses, one in the right ascension and
one in the azimuth angle distributions, that are sensitive to
modulations in right ascension and declination, respectively. The
largest departure from isotropy appears in the E
>
8
EeV energy bin, with an amplitude for the fi
rst harmonic in right ascension r1a
=
(4.4
ï?±
1.0)
´
10-2
, that has a chance probability P(⩾ra)
=
6.4
´
10-
15
, reinforcing the hint previously reported with vertical events alone