Conveners
Plenary 4
- Andrew Hillier (University of Exeter)
Spectroscopy of active regions reveals details of physical processes through measurement of a variety of plasma parameters. The Hinode EUV Imaging spectrometer (EIS) and the NASA IRIS instruments continue to provide spectroscopy from the chromosphere through to the corona. In 2020 the Solar Orbiter mission launched with the SPICE spectrometer onboard. Plans are well underway for a new...
On 2011 July 6 EUV channels of AIA instrument onboard SDO detected a recurrent, arc-shaped intensity disturbance over an active region. The intensity disturbance fronts were observed to propagate along a coronal loop bundle rooted in a small area of the dark umbra of the sunspot. Neither signatures of flare activity nor of a coronal mass ejection event were observed in association with the...
We studied the kink instability of triangular jets sandwiched between magnetic tubes/slabs and its possible connection to observed properties of the jets in the solar atmosphere. A dispersion equation governing the kink perturbations is obtained through matching of analytical solutions at the jet boundaries. The equation is solved analytically and numerically for different parameters of jets...
Magnetic Bright Points (MBPs) are small-scale solar atmospheric structures of highly concentrated magnetic fields that can be studied in ever more details thanks to current high precision measurements and a strong theoretical framework greatly supported by Magnetohydrodynamic (MHD) simulations and its analysis. In this study, we consider a large dataset taken from the HINODE mission from two...
Solar wind electrons exhibit complex electron velocity distribution functions (VDFs) shaped by expansion, Coulomb collisions, and field-particle interactions. We investigate how the suprathermal electron deficit in the anti-strahl direction, which was recently discovered in the near-Sun solar wind, drives a kinetic instability and creates whistler waves with wave vectors that are...
