212 citations · 334 across the 16 of their papers we have counts for
16 papers
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 Rodríguez, 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…
The gravitational stratification of multifluid and multispecies plasma
F. Zhang, J. Martínez-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…
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…
Driving mechanisms of solar active region geysers: The role of interacting magnetic flux
Aabha Monga, Satoshi Inoue, Jeongwoo Lee +2
Active region recurrent jets are manifestations of episodic magnetic energy release processes driven by complex interactions in the lower solar atmosphere. While magnetic flux emer…
3D MHD simulations of coronal loops heated via magnetic braiding II. Automatic detection of reconnection outflows and statistical analysis of their properties
Gabriele Cozzo, Paola Testa, Juan Martinez-Sykora +5
Recent observations of fast and bursty ``nanojets'' suggest novel diagnostics of nanoflare heating in the solar corona. The aim of this work is to investigate the presence and prop…
3D MHD simulations of coronal loops heated via magnetic braiding I. Continuous driving
Gabriele Cozzo, Paola Testa, Juan Martinez-Sykora +13
The nature and detailed properties of the heating of the million-degree solar corona are important issues that are still largely unresolved. Nanoflare heating might be dominant in…
Magnetic flux cancellation in the solar atmosphere through 3D realistic numerical modeling
F. Moreno-Insertis, V. H. Hansteen, D. Nóbrega-Siverio
We present a radiation-magnetohydrodynamics (RMHD) simulation of a magnetic cancellation event. The model is calculated with the Bifrost code and spans from the uppermost convectio…
Bifrost Models of the Quiet Sun. I. Comparison with Solar Observations
Milan Gošić, Viggo H. Hansteen, Alberto Sainz Dalda +2
Studying the emergence of magnetic fields is essential for understanding the physical mechanisms behind various phenomena in the solar atmosphere. Most importantly, the emerging fi…
Coronal energy release by MHD avalanches III. Identification of a reconnection outflow from a nanoflare
G. Cozzo, P. Pagano, F. Reale +5
Outflows perpendicular to the guide field are believed to be a possible signature of magnetic reconnection in the solar corona and specifically a way to detect the occurrence of ub…
Time-Adaptive PIROCK Method with Error Control for Multi-Fluid and Single-Fluid MHD Systems
Q. M. Wargnier, G. Vilmart, J. Martínez-Sykora +2
The solar atmosphere is a complex environment with diverse species and varying ionization states, especially in the chromosphere, where significant ionization variations occur. Thi…
Stirring the Base of the Solar Wind: On Heat Transfer and Vortex Formation
Adam J. Finley, Sacha A. Brun, Mats Carlsson +3
Current models of the solar wind must approximate (or ignore) the small-scale dynamics within the solar atmosphere, however these are likely important in shaping the emerging wave-…
Ubiquitous torsional motions in type II spicules
B. De Pontieu, M. Carlsson, L. H. M. Rouppe van der Voort +3
Spicules are long, thin, highly dynamic features that jut out ubiquitously from the solar limb. They dominate the interface between the chromosphere and corona and may provide sign…
The quiet solar atmosphere observed and simulated in NaD1
J. Leenaarts, R. J. Rutten, K. Reardon +2
The NaD1 line in the solar spectrum is sometimes attributed to the solar chromosphere. We study its formation in quiet-Sun network and internetwork. We first present high-resolutio…