12 papers
The gravitational stratification of multifluid and multispecies plasma
F. Zhang, J. MartÃnez-Sykora, Q. M. Wargnier +1
Context. The solar atmosphere is gravitationally stratified and consists of several layers at temperatures that vary by several orders of magnitude. Consequently, the solar atmosph…
On the cool nature of coronal nanojets
Gabriele Cozzo, Paola Testa, Juan Martinez-Sykora +5
Reconnection-driven nanoflares are widely considered a leading mechanism for coronal-loop heating, but their direct fingerprints in the tenuous coronal plasma remain elusive. The r…
Chromospheric dynamics and the O I 135.6~nm spectral line
Viggo Hansteen, Mats Carlsson, Bart De Pontieu +1
The O I 135.6 nm spectral line is formed in the chromosphere at the same heights as the Mg II h&k line cores are formed. As the O I line is optically thin, it represents a possibil…
Predicting the thermodynamics in the chromosphere from the translation of SDO data into the IRIS inversion results using a visual transformer model
Alberto Sainz Dalda, Vishal Upendran, Juno Kim +4
We present SDO2IRIS: a visual transformer model that translates a combination of images of the chromosphere and transition region (TR), observed by AIA, and a line-of-sight mag…
The IRIS inversion tool: recovering the radiative losses and the thermodynamics in the lower solar atmosphere
Alberto Sainz Dalda, Jaime de la Cruz RodrÃguez, Viggo Hansteen +2
We introduce an improved and fast inversion tool that is able to provide the thermodynamics of the solar atmosphere from the photosphere to the top of the chromosphere, as well as…
Spatial and Dynamical Relations between Spicules and Network Bright Points
Jeongwoo Lee, Eun-Kyung Lim, Viggo Hansteen
Spicules are among the most ubiquitous small-scale, jet-like features in the solar chromosphere and are widely believed to play a significant role in transporting mass and energy i…