R. U. Abbasi (Avtor), Mitsuhiro Abe (Avtor), T. Abu-Zayyad (Avtor), M. Allen (Avtor), R. Anderson (Avtor), R. Azuma (Avtor), E. Barcikowski (Avtor), J. W. Belz (Avtor), D. R. Bergman (Avtor), S. A. Blake (Avtor), J. P. Lundquist (Avtor)

Povzetek

We report on the search for steady point-like sources of neutral particles around 1018 eV between 2008 and 2013 May with the scintillator SD of the Telescope Array experiment. We found overall no significant point-like excess above 0.5 EeV in the northern sky. Subsequently, we also searched for coincidence with the Fermi bright Galactic sources. No significant coincidence was found within the statistical uncertainty. Hence, we set an upper limit on the neutron flux that corresponds to an averaged flux of 0.07 km−2 yr−1 for E > 1EeV in the northern sky at the 95% confidence level. This is the most stringent flux upper limit in a northern sky survey assuming point-like sources. The upper limit at the 95% confidence level on the neutron flux from Cygnus X-3 is also set to 0.2 km−2 yr−1 for E > 0.5 EeV. This is an order of magnitude lower than previous flux measurements.

Ključne besede

cosmic rays;acceleration of particles;surveys;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UNG - Univerza v Novi Gorici
UDK: 524
COBISS: 5615611 Povezava se bo odprla v novem oknu
ISSN: 1538-4357
Št. ogledov: 2903
Št. prenosov: 0
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

URN: URN:SI:UNG
Vrsta dela (COBISS): Delo ni kategorizirano
Strani: str. 1-11
Letnik: ǂVol. ǂ804
Zvezek: ǂno. ǂ2
Čas izdaje: 2015
DOI: 10.1088/0004-637X/804/2/133
ID: 11578979