HAO Colloquium Series presents Shinsuke Takasao, Kyoto University

A Unified Scenario of Solar Chromospheric Jets [abstract]

The Solar Physics Satellite Hinode has shown that the solar chromosphere is full of jets, that is, collimated plasma flows. Considering their rapid motions and morphology, it is believed that some fraction of the chromospheric jets is driven by magnetic reconnection. However, the connection between jets and reconnection has been still unclear. Considering that chromospheric jets are often observed in/near emerging flux regions, we studied the acceleration mechanisms of jets associated with emerging flux using a 2D MHD simulation. In the simulation, magnetic reconnection took place at various height, leading to the formation of shocks in the chromosphere. The shocks contribute to the acceleration of jets. We found that the acceleration mechanisms of the chromospheric jets associated with reconnection can be classified by the height of the reconnection points. On the basis of the results, we will propose a unified acceleration scenario of solar chromospheric jets.

Date and time: 
Wednesday, July 24, 2013 - 3:00pm to 4:00pm
2139 Captain Mary