Publicou 12 edições por ano
ISSN Imprimir: 0040-2508
ISSN On-line: 1943-6009
Indexed in
WORLDWIDE DETECTION OF ELF TRANSIENT ASSOCIATED WITH THE GAMMA FLARE OF DECEMBER 27, 2004
RESUMO
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 (77.0 °N; 15.5 °E). 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.
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Nickolaenko Alexander P., Schekotov Alexander Yu, Hayakawa Masashi, Romero Renato, Izutsu Jun, Electromagnetic manifestations of Tonga eruption in Schumann resonance band, Journal of Atmospheric and Solar-Terrestrial Physics, 237, 2022. Crossref