منابع مشابه
Millimeter Observations of Flares
The nature of emission from solar ares at millimeter wavelengths is discussed. In the impulsive phase of ares, millimeter emission should be dominated by gyrosynchrotron emission from MeV{energy electrons. Millimeter telescopes are very sensitive to these electrons and can make high{resolution images of their sources for comparison with HESSI images, allowing us to investigate the behaviour of ...
متن کاملMillimeter Interferometer Observations of Flares
This paper addresses the current state of millimeter interferometry of solar ares and the issues which can be addressed by such observations. Millimeter interferometers such as BIMA detect gyrosynchrotron emission from MeV{energy electrons in the impulsive phase of solar ares as well as from hot dense plasma in the thermal decay phase. BIMA now consists of 10 antennas and is capable of snapshot...
متن کاملKappa distribution and hard X - ray emission of solar flares
Aims. We investigate whether the so-called kappa distribution, often used to fit electron distributions detected in-situ in solar wind, can describe electrons producing the hard X-ray emission in solar flares. Methods. Using Ramaty High Energy Solar Spectroscopic imager (RHESSI) flare data we fit spatially and feature integrated spectra assuming kappa distribution for mean electron flux spectru...
متن کاملRadio emission from acceleration sites of solar flares
The Letter takes up a question of what radio emission is produced by electrons at the very acceleration site of a solar flare. Specifically, we calculate incoherent radio emission produced within two competing acceleration models—stochastic acceleration by cascading MHD turbulence and regular acceleration in collapsing magnetic traps. Our analysis clearly demonstrates that the radio emission fr...
متن کاملElectron cyclotron maser emission from double footpoints in solar flares
It is now known from Yohkoh Hard X-ray Telescope observations that double (or even multiple) hard X-ray sources in flares are a common occurrence. These sources, which are positioned at the feet of coronal soft X-ray loops, are synchronised to within 0.1s and have similar spectra, strongly suggesting that they are produced by a single population of electrons accelerated/injected at some point i...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2013
ISSN: 1742-6596
DOI: 10.1088/1742-6596/440/1/012009