INVESTIGADORES
MOLLERACH Maria Silvia
artículos
Título:
Search for magnetically-induced signatures in the arrival directions of ultra-high-energy cosmic rays measured at the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION; MOLLERACH, SILVIA
Revista:
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Año: 2020 vol. 2020
ISSN:
1475-7516
Resumen:
We search for signals of magnetically-induced effects in the arrival directionsof ultra-high-energy cosmic rays detected at the Pierre Auger Observatory. We apply twodifferent methods. One is a search for sets of events that show a correlation between theirarrival direction and the inverse of their energy, which would be expected if they come fromthe same point-like source, they have the same electric charge and their deflection is relativelysmall and coherent. We refer to these sets of events as “multiplets”. The second method,called “thrust”, is a principal axis analysis aimed to detect the elongated patterns in a regionof interest. We study the sensitivity of both methods using a benchmark simulation and weapply them to data in two different searches. The first search is done assuming as sourcecandidates a list of nearby active galactic nuclei and starburst galaxies. The second is anall-sky blind search. We report the results and we find no statistically significant features.We discuss the compatibility of these results with the indications on the mass compositioninferred from data of the Pierre Auger Observatory.