Exploring Flaring Behaviour on Low Mass Stars, Solar-type Stars and the Sun

Exploring Flaring Behaviour on Low Mass Stars, Solar-type Stars and the Sun
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探索低质量恒星、太阳型恒星和太阳的耀斑行为

DOI:
10.1017/s1743921319009980
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发表时间:
2020
期刊:
Proceedings of the International Astronomical Union
影响因子:
--
通讯作者:
Doyle L
Doyle L
中科院分区:
--
文献类型:
--
作者:
Doyle L

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我们报告我们的项目,以研究在太阳和低质量恒星的活动。利用高节奏,使用安装在瑞典太阳望远镜上的CRISP分光偏振仪对暗条喷发进行的Hα观测使我们能够确定该事件的3D速度图。为了深入了解驱动事件的物理机制,我们将我们的观测与3D MHD重联模型进行了定性比较。太阳型恒星和低质量恒星可以高度活跃,产生能量超过尔格的耀斑。使用K2和TESS数据,我们发现耀斑的数量和旋转相位之间没有相关性,这是令人惊讶的。我们的太阳耀斑模型可以用来帮助我们了解其他恒星耀斑的起源。通过放大我们的太阳模型来复制观测到的恒星耀斑能量,我们研究了这种高能量耀斑所需的条件。
We report on our project to study the activity in both the Sun and low mass stars. Utilising high cadence, Hα observations of a filament eruption made using the CRISP spectropolarimeter mounted on the Swedish Solar Telescope has allowed us to determine 3D velocity maps of the event. To gain insight into the physical mechanism which drives the event we have qualitatively compared our observation to a 3D MHD reconnection model. Solar-type and low mass stars can be highly active producing flares with energies exceeding erg. Using K2 and TESS data we find no correlation between the number of flares and the rotation phase which is surprising. Our solar flare model can be used to aid our understanding of the origin of flares in other stars. By scaling up our solar model to replicate observed stellar flare energies, we investigate the conditions needed for such high energy flares.
十月和十一月
DOI: --
发表时间: 2018
期刊: Dagbesteding
影响因子: --
作者:
M. Wolf
通讯作者: M. Wolf