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arXiv 0901.3465astro-ph.SR
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太阳耀斑中的远红外和射电热连续谱

Far-IR and radio thermal continua in solar flares

J. Kašparová, P. Heinzel, M. Karlický, Z. Moravec, M. Varady

摘要:

随着新型远红外(FIR)和射电毫米波和亚毫米波仪器(SMESE卫星上的DESIR、ESO-ALMA)的发明,人们对这一迄今为止尚未探索的波长区域的太阳耀斑观测和分析的兴趣越来越大。两种主要的辐射机制起着作用:由于加速粒子束在磁场中运动而产生的同步辐射和由于低层大气中的能量沉积而产生的热辐射。在这篇文章中,我们探讨了热FIR和无线电连续束的时间依赖性的影响。我们展示了如何以及在哪里形成这些连续存在的时间依赖性的光束加热和非热激发/电离的色球氢等离子体。

英文摘要:

With the invention of new far-infrared (FIR) and radio mm and sub-mm instruments (DESIR on SMESE satellite, ESO-ALMA), there is a growing interest in observations and analysis of solar flares in this so far unexplored wavelength region. Two principal radiation mechanisms play a role: the synchrotron emission due to accelerated particle beams moving in the magnetic field and the thermal emission due to the energy deposit in the lower atmospheric layers. In this contribution we explore the time-dependent effects of beams on thermal FIR and radio continua. We show how and where these continua are formed in the presence of time dependent beam heating and non-thermal excitation/ionisation of the chromospheric hydrogen plasma.

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