Search for Sources of Ultrahigh Energy Cosmic Rays
A. A. Mikhaĭlov
Abstract
Open-access reader
A. A. Mikhaĭlov
Abstract
Open-access reader
The connection between the arrival directions of ultrahigh energy cosmic rays by using the EAS array data and point galactic sources of radio-and gamma-radiations, pulsars,is sought. At the mean particle energy of 10^{19} eV the correlation between the particle arrival directions and pulsars located along the magnetic field lines has been found. According to our estimations the chance probability is equal to 2.10^{-4}. The observed particle flux from 16 pulsars inside a circle of radius <6^{\circ} exceeds the background by 6.3σ(p < 10^{-10}), from PSR 2351+61 - 5σ. A group of 9 pulsars has been found from the direction of which the particle flux in the region 10^{\circ}\times60^{\circ} is in excess of the expected one by 4.4σ. The obtained results are discussed.
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The connection between the arrival directions of ultrahigh energy cosmic rays by using the EAS array data and point galactic sources of radio-and gamma-radiations, pulsars,is sought. At the mean particle energy of 10^{19} eV the correlation between the particle arrival directions and pulsars located along the magnetic field lines has been found. According to our estimations the chance probability is equal to 2.10^{-4}. The observed particle flux from 16 pulsars inside a circle of radius <6^{\circ} exceeds the background by 6.3σ(p < 10^{-10}), from PSR 2351+61 - 5σ. A group of 9 pulsars has been found from the direction of which the particle flux in the region 10^{\circ}\times60^{\circ} is in excess of the expected one by 4.4σ. The obtained results are discussed.
Key concepts: Pulsar, Physics, Cosmic ray, RADIUS, Astrophysics, Flux (metallurgy), Particle (ecology), Gamma ray