Conveners
Poster Session 8.1
- Jasmina Magdalenic (Royal Observatory of Belgium)
Comprehensive radiative MHD simulations of the solar atmosphere depend directly on few free parameters. However, the microphysics of the problem (including atomic and molecular data) is hidden in the opacity and equation of state used by numerical codes. We address the importance of various opacity contributors in 3D simulations of the solar photosphere done with the MANCHA code. This is...
We study oscillations in the lower atmosphere of coronal hole regions, where the conditions are favorable for the propagation between the atmosphere layers. We analyse the features of the oscillations that show signs of propagation between the layers of the solar atmosphere. Using the cross-spectrum wavelet algorithm, we found that both chromospheric and photospheric signals under coronal...
We used magnetic field data acquired by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory to measure the magnetic flux decay rate in more than 800 active and ephemeral regions observed between 2010 and 2016. Our results suggest that for most active regions a power law between the peak magnetic flux and flux decay rate holds. At the same time part of unipolar active...
We investigate the three-dimensional distribution of the small-scale brightening events (“campfires”) discovered in the EUV quiet Sun by Solar Orbiter/EUI. We use a first commissioning data set acquired by the HRI_EUV telescope of EUI on 2020 May 30 in the 174 Å passband combined with the simultaneous SDO/AIA data taken in the similar 171 Å passband. The spatial resolution of the two...
We present analysis of IRIS ultraviolet observations of cool loops visible after the maximum of M6.5 solar flare on June 22, 2015. The detailed investigation of the physical parameters and models of these loops was presented in Mikuła et al. (2017). The line profiles were modeled using Cloud Model and this allowed us obtaining the reliable physical parameters characterizing the moving plasma...
The chromospheric inverse Evershed flow (IEF) transports material into sunspots along the magnetic field lines that connect the boundary of the moat cell with the outer penumbra. In this study, we combine high-resolution observations of NOAA 12418 taken from the Dunn Solar Telescope and magnetic field measurements from the Helioseismic and Magnetic Imager (HMI) to investigate the driver of...
