Worldwide detection of elf transient associated with the gamma flare of December 27, 2004

A. Yu Schekotov, A. P. Nickolaenko, M. Hayakawa, Y. Hobara, G. Satori, J. Bor, M. Neska

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1 Citation (Scopus)


We present experimental records containing extremely low frequency (ELF) pulses associated with the gamma ray flare of December 27, 2004. The GPS synchronized records were collected at observatories Moshiri (geographic coordinates 44.37 N; 142.24 E), Onagawa (38.43 N; 141.48 E), Esrange (67.83 N; 21.1 E), Karimshino (52.83 N; 158.13 E), Nagycenk (47.6 N; 16.7 E), and Hornsund (77.0N; 15.5E). Data demonstrate an exceptional similarity and contain characteristic pulses around the occurrence time of gamma flare. Our signal processing showed that in addition to fitting the arrival time of gamma rays, the following model predictions were confirmed: radio pulses contain the lowest Schumann resonance mode, the source polarity was positive, the magnetic field tends to be linearly polarized, and the source bearings correspond to the direction toward the sub-flare point. These properties are in accordance with the concept of a parametric electromagnetic pulse originating from a sizeable modification of the global electric circuit by the cosmic gamma flare.

Original languageEnglish
Pages (from-to)1695-1718
Number of pages24
JournalTelecommunications and Radio Engineering (English translation of Elektrosvyaz and Radiotekhnika)
Issue number18
Publication statusPublished - Sep 12 2013



  • Cosmic gamma ray flare
  • ELF transient
  • Schumann resonance

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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