Search for Sources of Primary Cosmic Rays at Energies Above 0.1 Pev at Tien Shan

TL;DR

This study analyzed data from Tien Shan to identify potential sources of primary cosmic rays above 0.1 PeV, revealing excess air showers from a supernova remnant and a nearby pulsar, suggesting their role as cosmic ray sources.

Contribution

First to map extensive air shower directions at Tien Shan for energies above 0.1 PeV, identifying potential cosmic ray sources such as a supernova remnant and a pulsar.

Findings

Detected excess air showers from a supernova remnant

Observed directional excess near pulsar PSR 0656+14

Indicated possible sources of high-energy cosmic rays

Abstract

Analysis of the experimental data of joint Russian - Hungarian research was carried out at Tien Shan station on the search of sources of primary cosmic rays (PCR) at energies 0.1-1.0 PeV. Maps of extensive air shower arrival directions were presented where the standard deviation of mean event numbers in equatorial co-ordinates exceeded a definite value. The excess of EAS number was observed from an Galaxy object - the SN remnant and some other directions. The young pulsar PSR 0656+14 located near the centre of this object.