We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
The properties of solar radio spikes with harmonics and the associated EUV brightenings.
- Authors
Feng, S. W.
- Abstract
Solar radio spikes are narrowband, short duration radio bursts. They are excited by the energetic electrons accelerated during small scale magnetic reconnections. Spikes play an important role in diagnosing magnetic reconnections and studying electron accelerations. In this paper, the solar radio spikes observed by the Chashan Solar Observatory (CSO) spectrograph combined with observations from the Solar Dynamics Observatory (SDO) are used to study the properties of spikes with harmonics. The CSO data show that the central frequency ratio of the third to the second harmonic is 1.35±0.01 and the third harmonic has a larger absolute and relative bandwidth, but a shorter duration than the second one. By studying the correlation between light curves of the solar radio spike and those of bright points at different Extreme UltraViolet (EUV) passbands, the best associated EUV bright point and passbands are determined. The spike source properties are discussed based on the extrapolated magnetic field around the associated EUV bright point.
- Subjects
SOLAR radio bursts; ELECTRONS; MAGNETIC reconnection; EXTREME Ultraviolet Explorer Satellite; ASTRONOMICAL observations
- Publication
Astrophysics & Space Science, 2019, Vol 364, Issue 1, p1
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-018-3492-x