Speaker
Lidong Xia
(Shandong University)
Description
Using high-resolution spectral and imaging data taken by the Interface Region Imaging
Spectrograph (IRIS), we investigate the transition region explosive events, which are
believed to be signatures of magnetic reconnection, observed in the solar transition
region. We found that the explosive events are closely associated with dynamics of
small-scaled loops in the solar transition region. In some cases, explosive events
can be found in conjunction region of footpoints of multiple loops, suggesting that
magnetic reconnection occurs due to interactions between small-scale loops. In some
other cases, explosive events are associated with brightenings along the loops,
however, brightenings in the same loops may not produce explosive events. We suggest
that the loop brightenings associated with explosive events are results of magnetic
reconnection in braidings of small-scaled loops, while normal loop brightenings
cannot produce explosive events. Our study concludes that magnetic reconnection
producing explosive events can result from braidings of or interaction between
small-scaled loops. Such kind of magnetic reconnection should play an important role
in heating the transition region plasma.
Primary author
Lidong Xia
(Shandong University)
