Bulletin of Taras Shevchenko National University of Kyiv. Astronomy, no. 52, p. 36-39 (2015)

Cosmological fast radio burst “SPARK” as a nonthermal radiation from shock wave around the superconducting string

L. Zadorozhna, Ph.D. in Phys. and Math. Sci.,
B.I. Hnatyk, Dr. Phys. and Math. Sci.
Taras Shevchenko National University of Kyiv, Kyiv

Superconducting cosmic strings can be powerful sources of nonthermal radiation. Radiation from the shock wave around near-cusp region has the character of targeted bursts. It is shown that opened in 2007 on the 64-meter radio telescope Parks millisecond extragalactic fast radio burst FRB010724 “spark” with unknown nature can be explained as synchrotron radiation from shock wave around near-cusp region of thesuperconducting cosmic string with the energy scale close to the Grand Unification scale. The observed duration, flow and event rate are in goodagreement with the proposed model. Currently detected five fast radio burst with similar characteristics reinforce the explanation of thisphenomenon as radiation from cosmic string loops.

Сosmic strings, fast radio burst, non-thermal radiation, shock waves

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