Electron beams generated by shock waves in the solar corona
نویسندگان
چکیده
منابع مشابه
On Heating of Solar Corona and Acceleration of Low-Speed Solar Wind by Acoustic Waves Generated in Corona
We investigate possibilities of solar coronal heating by acoustic waves generated not at the photosphere but in the corona, aiming at heating in the midto low-latitude corona where the low-speed wind is expected to come from. Acoustic waves of period τ ∼ 100s are triggered by chromospheric reconnection, one model of small scale magnetic reconnection events recently proposed by Sturrock. These w...
متن کاملOn the Heating of the Solar Corona and the Acceleration of the Low-Speed Solar Wind by Acoustic Waves Generated in the Corona
We investigate possibilities of solar coronal heating by acoustic waves generated not at the photosphere but in the corona, aiming at heating in the midto low-latitude corona where the low-speed wind is expected to come from. Acoustic waves of period τ ∼ 100s are triggered by chromospheric reconnection, one model of small scale magnetic reconnection events recently proposed by Sturrock. These w...
متن کاملLow frequency radio observations of bi-directional electron beams in the solar corona
The radio signature of a shock travelling through the solar corona is known as a type II solar radio burst. In rare cases these bursts can exhibit a fine structure known as “herringbones”, which are a direct indicator of particle acceleration occurring at the shock front. However, few studies have been performed on herringbones and the details of the underlying particle acceleration processes a...
متن کاملDynamics of subrelativistic electron beams in the solar corona Type III group analysis
A number of type III groups is studied. Wave particle interactions are neglected and the so called drift approximation is used to model the electron beam evolution. We extrapolated the observed Flux-Time profiles towards higher frequencies and estimated the injection time for the individual beams responsible for the excitation of the type III’s. A simple clustering algorithm, based on the tempo...
متن کاملPropagation of shock waves in the solar corona with 2-D loop structures
Motivated by recent observations of type II radio bursts, we study propagation of shock waves by the twodimensional numerical magnetohydrodynamic model. Explosion of a hot plasma is investigated for various ratios of the mass density and magnetic field intensity in a fan of coronal loops. Ducting of shock waves occurs along loop-like structure and ducting of possible radio emission in under-den...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2005
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20034396