Search of the sources of the cosmic rays with energies above 10E20 eV
Heading:
| 1Gnatyk, RB 1Astronomical Observatory of Taras Shevchenko National University of Kyiv, Kyiv, Ukraine |
| Kinemat. fiz. nebesnyh tel (Online) 2016, 32(1):3-20 |
| Start Page: Extragalactic Astronomy |
| Language: Ukrainian |
Abstract: Sources of the ultrahigh energy cosmic rays (UHECR, E > 1018 eV) are still unknown, mainly due to loss of a direction to the source after deviations of the trajectories of the cosmic rays (CR) in the Galactic and extragalactic magnetic fields. With CR energy (rigidity) increasing the influence of the magnetic field weakens, therefore the most promising is the search of the sources for events with the highest energies. In our work we expand the existing sample of the UHECR E > 1020 eV from 33 to 42 events due to calibration of the events of AUGER detector. The sample is characterized by existing of the triplet of events in a circle with radius of 3°. The event with the highest energy remains the shower detected by fluorescent detector Fly's Eye (FE-event) in 1993 with E = 3.2x1020 eV. The possible sources of triplet and FE-event are analyzed. Taking into account deflection of the trajectories of the UHECR in extra-galactic and Galactic magnetic fields it is shown, that transient sources of the FE-event may be galaxies with active star formation where UHECR are accelerated by newborn millisecond pulsars. Among potential Galactic sources we highlight young pulsars with millisecond period at birth, and giant magnetar flares. |
| Keywords: cosmic rays, galactic and extragalactic magnetic fields, magnetars, pulsars |
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