Diagnosis of precursor phase of solar flares based on the identification and the a...
| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Vale Paraiba UNIVAP, IP&D, BR-12244000 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | SOLAR PHYSICS; v. 289, n. 12, p. 4607-4620, DEC 2014. |
| Web of Science Citations: | 3 |
| Abstract | |
It is well established that solar Type-II radio bursts are signatures of magnetohydrodynamical (MHD) shock waves propagating outward through the solar corona. Nevertheless, there are long-standing controversies about how these shocks are formed; solar flares and the coronal mass ejections (CMEs) are considered to be the most likely drivers. We present the results of the analysis of four solar Type-II bursts recorded between 20 January 2010 and 17 November 2011 by the Compound Astronomical Low-frequency Low-cost Instrument for Spectroscopy in Transportable Observatories (CALLISTO-BR) (in Brazil), which operates in the frequency range of 45 -aEuro parts per thousand 870 MHz. For all four solar Type-II radio bursts, which consisted of one event without band splitting and three split-band variants, the outcomes are consistent with those reported in the literature. All four Type-II radio bursts were accompanied by both solar flares and CMEs, which are associated with the impulsive phase of the flares and, very likely, with the acceleration phase of the CMEs. (AU) | |
| FAPESP's process: | 12/08445-9 - Study of day-to-day variability of the mesosphere, thermosphere and ionosphere at low latitude and equatorial region, during the solar cycle 24 |
| Grantee: | Paulo Roberto Fagundes |
| Support type: | Research Projects - Thematic Grants |
| FAPESP's process: | 12/00009-5 - Diagnosis of solar emissions in meter and decimeter wavelengths associated with coronal mass ejection (CME) and solar flares |
| Grantee: | Rafael Douglas Cunha da Silva |
| Support type: | Scholarships in Brazil - Doctorate |