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首页> 外文期刊>The Astrophysical journal >ACCELERATION AND TRANSPORT MODELING OF SOLAR ENERGETIC PARTICLE CHARGE STATES FOR THE EVENT OF 1998 SEPTEMBER 9
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ACCELERATION AND TRANSPORT MODELING OF SOLAR ENERGETIC PARTICLE CHARGE STATES FOR THE EVENT OF 1998 SEPTEMBER 9

机译：1998年9月9日事件的太阳能能量粒子充电状态的加速和传输模型

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The 1998 September 9 solar particle event was a ~3He-rich solar particle event that showed a strong increase of Fe ionization states in the energy range below 1 MeV nucleon~(-1). We have investigated this event by fitting Wind and ACE observations using a model of acceleration and stripping near the Sun, followed by particle transport in the interplanetary medium taking into account particle focusing, pitch-angle scattering, adiabatic deceleration, and convection. The simulation provides a reconstruction of the injection function of the energetic particles released from the Sun and their time, energy, and charge dependence. We find that electrons and Fe ions are injected almost impulsively, whereas the injection of protons takes place on a much longer timescale or even consists of two distinct injection processes. We are able to obtain good overall fits to the observations. This suggests that our model can be used to obtain information about the conditions in the acceleration region such as density, temperature, and the timescales of the acceleration process, if sufficiently accurate modeling of the particle transport in the solar wind is possible.
机译：1998年9月9日的太阳粒子事件是一个〜3He富集的太阳粒子事件，表明在1 MeV核仁〜（-1）以下的能量范围内，Fe的电离态大大增加。我们通过使用太阳附近的加速和剥离模型对风和ACE观测值进行拟合，然后考虑了粒子聚焦，俯仰角散射，绝热减速和对流，在行星际介质中进行粒子传输，从而对这一事件进行了调查。该模拟重建了从太阳释放的高能粒子的注入功能及其时间，能量和电荷依赖性。我们发现，电子和铁离子几乎是脉冲注入的，而质子的注入发生的时间要长得多，甚至包括两个不同的注入过程。我们能够获得与观察结果的良好总体拟合。这表明，如果可以对太阳风中的粒子传输进行足够准确的建模，则可以使用我们的模型来获取有关加速区域中条件的信息，例如密度，温度和加速过程的时间尺度。

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