| 4/22 |
|
Ishii |
Filament eruptions and two ribbon flares at quiet regions |
Today, I would like to introduce the following paper and SMART/SDDI observations of filament eruptions and two ribbon flares at quiet regions.
A STUDY OF FAST FLARELESS CORONAL MASS EJECTIONS,
H. Q. Song et al, 2013, ApJ, 773, 129.
|
pptx
10.5 MB
|
| 5/13 |
|
Mishra |
Successive Emerging Flux Triggers Persistent Reconnection Jets in the Solar Atmosphere and Associated Heating |
The dynamics of the solar atmosphere, including mass and energy circulation,
coronal heating, and the initiation of eruptions both small and large, are governed by magnetic fields.
High-resolution observational techniques and computational models are essential for unraveling these intricate phenomena.
In my presentation, I will discuss how the successive emergence of magnetic flux influences various phases of jet activity
in the solar atmosphere, contributing to the heating of the solar corona.
Utilizing AIA multiwavelength imaging and SMART/SDDI spectroscopic observations,
we categorized the observation period into three phases: initial, developing, and eruptive.
The initial phase featured small-scale jets with velocities between 175-255 km/s.
The developing phase was characterized by bidirectional plasma flows within the fan plane,
while the eruptive phase saw three homologous jets within the fan-spine magnetic topology.
We examined the topological alterations caused by magnetic reconnection and its persistent role in coronal heating.
Differential Emission Measure (DEM) analysis indicated the existence of super-hot plasma, around 8-10 MK,
which led to the ejection of hot and multithermal plasma into the overlying solar corona.
|
|