Oscillatory signals in the flaring solar chromosphere

太阳耀斑期间发出的强烈辐射主要来自太阳色球层，并携带有关这一时期情况的丰富信息。在这个项目中，学生将对地面太阳望远镜的光谱偏振观测进行光谱和时间序列分析，以研究太阳耀斑的色球振荡。磁化等离子体中的振荡信号因其诊断共振的潜力而受到重视，从而有助于限制振荡体积中的等离子体和场特性。该项目将调查耀斑是否会引起和/或改变色球振荡，以及这些振荡对耀斑期间磁场和等离子体变化的诊断潜力。

The intense burst of radiation emitted during a solar flare comes mostly from the solar chromosphere, and carries rich information about the conditions during this time. In this project the student will carry out spectroscopic and time-series analysis of optical spectro-polarimetric observations from ground-based solar telescopes, to investigate chromospheric oscillations in solar flares. Oscillatory signals in magnetised plasma are prized because of their potential to diagnose resonances, thus helping to constrain plasma and field properties in the oscillating volume. The project will investigate whether flares cause, and/or modify, chromospheric oscillations, and what diagnostic potential these might hold about changes to the magnetic field and plasma during a flare.