Observation of Terrestrial gamma-ray flashes in the RELEC space experiment on the Vernov satellite

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Observation of Terrestrial gamma-ray flashes in the RELEC space experiment on the Vernov satellite

Bogomolov, V. V. / Panasyuk, M. I. / Svertilov, S. I. / Bogomolov, A. V. / Garipov, G. K. / Iyudin, A. F. / Klimov, P. A. / Klimov, S. I. / Mishieva, T. M. / Minaev, P. Yu. / ... [mehr]

Abstract

Abstract The RELEС scientific payload of the Vernov satellite launched on July 8, 2014 includes the DRGE spectrometer of gamma-rays and electrons. This instrument comprises a set of scintillator phoswich-detectors, including four identical X-ray and gamma-ray detector with an energy range of 10 kev to 3 MeV with a total area of ~500 $ cm^{2} $ directed to the atmosphere, as well as an electron spectrometer containing three mutually orthogonal detector units with a geometric factor of ~2 $ cm^{2} $ sr. The aim of a space experiment with the DRGE instrument is the study of fast phenomena, in particular Terrestrial gamma-ray flashes (TGF) and magnetospheric electron precipitation. In this regard, the instrument provides the transmission of both monitoring data with a time resolution of 1 s, and data in the event-by-event mode, with a recording of the time of detection of each gamma quantum or electron to an accuracy of ~15 μs. This makes it possible to not only conduct a detailed analysis of the variability in the gamma-ray range, but also compare the time profiles with the results of measurements with other RELEC instruments (the detector of optical and ultraviolet flares, radio-frequency and low-frequency analyzers of electromagnetic field parameters), as well as with the data of ground-based facility for thunderstorm activity. This paper presents the first catalog of Terrestrial gamma-ray flashes. The criterion for selecting flashes required in order to detect no less than 5 hard quanta in 1 ms by at least two independent detectors. The TGFs included in the catalog have a typical duration of ~400 μs, during which 10–40 gamma-ray quanta were detected. The time profiles, spectral parameters, and geographic position, as well as a result of a comparison with the output data of other Vernov instruments, are presented for each of candidates. The candidate for Terrestrial gamma-ray flashes detected in the near-polar region over Antarctica is discussed.

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Dokumentinformationen

Titel :

Observation of Terrestrial gamma-ray flashes in the RELEC space experiment on the Vernov satellite

Beteiligte:

Bogomolov, V. V. (Autor:in) / Panasyuk, M. I. (Autor:in) / Svertilov, S. I. (Autor:in) / Bogomolov, A. V. (Autor:in) / Garipov, G. K. (Autor:in) / Iyudin, A. F. (Autor:in) / Klimov, P. A. (Autor:in) / Klimov, S. I. (Autor:in) / Mishieva, T. M. (Autor:in) / Minaev, P. Yu. (Autor:in)

Erschienen in:

Cosmic Research ; 55 , 3

Erscheinungsdatum :

2017

ISSN :

0010-9525

DOI :

https://doi.org/10.1134/S0010952517030017

Medientyp :

Aufsatz (Zeitschrift)

Format :

Sprache :