The Storm of Decameter Spikes During the Event of 14 June 2012

被引：12

作者：

Shevchuk, N. V. ^{[1
,2
]}

Melnik, V. N. ^{[1
]}

Poedts, S. ^{[2
]}

Dorovskyy, V. V. ^{[1
]}

Magdalenic, J. ^{[3
]}

Konovalenko, A. A. ^{[1
]}

Brazhenko, A. I. ^{[4
]}

Briand, C. ^{[5
]}

Frantsuzenko, A. V. ^{[4
]}

Rucker, H. O. ^{[6
]}

Zarka, P. ^{[5
]}

机构：

[1] Inst Radio Astron, Kharkov, Ukraine

[2] Katholieke Univ Leuven, Leuven, Belgium

[3] Observ Paris, Meudon, France

[4] Royal Observ Belgium, Brussels, Belgium

[5] Gravimetr Observ, Inst Geophys, Poltava, Ukraine

[6] Austrian Acad Sci, Space Res Inst, A-8010 Graz, Austria

来源：

SOLAR PHYSICS | 2016年 / 291卷 / 01期

关键词：

SOLAR RADIO-BURSTS; POLARIZATION; FREQUENCY; FEATURES; RANGE;

D O I：

10.1007/s11207-015-0799-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An event on 14 June 2012, observed with the radio telescopes UTR-2 (Kharkov, Ukraine), URAN-2 (Poltava, Ukraine), and NDA (Nancay, France) during a joint Summer campaign, is analyzed and discussed. The high solar activity resulted in a storm of spikes, and a storm of Type III bursts, Type IIIb bursts, and a Type IV burst observed in the decameter band. During the observed time interval, the average flux of radio emission changed twice. Using spikes as a tool for diagnostics of plasma parameters, we followed variations of the coronal temperature and the coronal magnetic field in the observed time interval. Thus, in frames of the model described in this article the observed decameter spikes' durations of 0.3 - 1 seconds correspond to the coronal plasma temperatures of approximate to 0.1-0.6x10(6) K. At the same time the spikes' frequency bandwidths of 25 - 80 kHz give us the magnetic-field value of about 2 G.

引用

页码：211 / 228

页数：18

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