Study of the PeV neutrino, gamma-rays, and UHECRs around the lobes of Centaurus A


Por: Fraija, N., Aguilar-Ruiz, E., Galvan-Gamez, A., Marinelli, A., de Diego, J. A.

Publicada: 1 dic 2018
Resumen:
Pierre Auger observatory reported the distribution of arrival directions of the highest energy cosmic rays. These events were collected in 10 yr of operations with declinations between -90 degrees and +45 degrees. The IceCube neutrino telescope reported the detection of 82 extraterrestrial neutrinos in the High-Energy Starting Events catalogue. The highest-energy neutrino event (IC35) reported in this catalogue had an energy of 2004(-262)(+236) TeV and its reconstruction was centred at RA = 208.4 degrees and dec. = -55.8 degrees (J2000). Being Centaurus A the nearest radio-loud active galactic nucleus and one of the potential candidates for accelerating cosmic rays up to similar to 10(20) eV, we show that the ultra-high-energy cosmic rays (UHECRs) around the direction of Centaurus A (15 degrees radius) could be accelerated inside the giant lobes. Studying the composition of UHECRs through the photodisintegration processes, the maximum energy that these can reach in the giant lobes and the average deflecting angles that nuclei undergo due to Galactic and extragalactic magnetic fields, it is shown that the most promise candidates of UHECR composition are light nuclei such as carbon/nitrogen nuclei. Considering the interactions of the relativistic carbon nuclei with photon fields (extragalactic background light and synchrotron) and materials (inside and outside the lobes), we do not find enough evidence to associate the IC35 event with the UHECRs reported by Pierre Auger observatory.

Filiaciones:
Fraija, N.:
 Instituto de Astronomía, Universidad Nacional Autónoma de México, Circuito Exterior, C.U., A. Postal 70-264, México City, 04510, Mexico

 Univ Nacl Autonoma Mexico, Inst Astron, A Postal 70-264, Mexico City 04510, DF, Mexico

Aguilar-Ruiz, E.:
 Instituto de Astronomía, Universidad Nacional Autónoma de México, Circuito Exterior, C.U., A. Postal 70-264, México City, 04510, Mexico

 Univ Nacl Autonoma Mexico, Inst Astron, A Postal 70-264, Mexico City 04510, DF, Mexico

Galvan-Gamez, A.:
 Instituto de Astronomía, Universidad Nacional Autónoma de México, Circuito Exterior, C.U., A. Postal 70-264, México City, 04510, Mexico

 Univ Nacl Autonoma Mexico, Inst Astron, A Postal 70-264, Mexico City 04510, DF, Mexico

Marinelli, A.:
 I.N.F.N. and Physics Institute Polo Fibonacci, Largo B. Pontecorvo 3, Pisa, I-56127, Italy

 Ist Nazl Fis Nucl, Polo Fibonacci Largo B Pontecorvo 3, I-56127 Pisa, Italy

 Phys Inst, Polo Fibonacci Largo B Pontecorvo 3, I-56127 Pisa, Italy

de Diego, J. A.:
 Instituto de Astronomía, Universidad Nacional Autónoma de México, Circuito Exterior, C.U., A. Postal 70-264, México City, 04510, Mexico

 Univ Nacl Autonoma Mexico, Inst Astron, A Postal 70-264, Mexico City 04510, DF, Mexico
ISSN: 00358711
Editorial
WILEY-BLACKWELL, COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA, Reino Unido
Tipo de documento: Article
Volumen: 481 Número: 4
Páginas: 4461-4471
WOS Id: 000454575100017

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