Details

Autor(en) / Beteiligte

• Shevchuk, N. V.
• Melnik, V. N.
• Poedts, S.
• Dorovskyy, V. V.
• Magdalenic, J.
• Konovalenko, A. A.
• Brazhenko, A. I.
• Briand, C.
• Frantsuzenko, A. V.
• Rucker, H. O.
• Zarka, P.

Titel

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

Ist Teil von

• Solar physics, 2016, Vol.291 (1), p.211-228

Ort / Verlag

Dordrecht: Springer Netherlands

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• An event on 14 June 2012, observed with the radio telescopes UTR-2 (Kharkov, Ukraine), URAN-2 (Poltava, Ukraine), and NDA (Nançay, 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 ≈ 0.1 – 0.6 × 10 6 K . At the same time the spikes’ frequency bandwidths of 25 – 80 kHz give us the magnetic-field value of about 2 G.