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Ion-neutral interactions and non-equilibrium ionization in the solar chromosphere
Juan Martinez-Sykora, Jorrit Leenaarts, Bart De Pontieu +4
The thermal structure of the chromosphere is regulated through a complex interaction of various heating processes, radiative cooling, and the ionization degree of the plasma. Here…
The Multi-slit Approach to Coronal Spectroscopy with the Multi-slit Solar Explorer (MUSE)
Bart De Pontieu, Juan Martinez-Sykora, Paola Testa +6
The Multi-slit Solar Explorer (MUSE) is a proposed mission aimed at understanding the physical mechanisms driving the heating of the solar corona and the eruptions that are at the…
Recovering Thermodynamics from Spectral Profiles observed by IRIS: A Machine and Deep Learning Approach
Alberto Sainz Dalda, Jaime de la Cruz Rodríguez, Bart De Pontieu +1
Inversion codes allow reconstructing a model atmosphere from observations. With the inclusion of optically thick lines that form in the solar chromosphere, such modelling is comput…
On the origin of the magnetic energy in the quiet solar chromosphere
Juan Martínez-Sykora, Viggo H. Hansteen, Boris Gudiksen +3
The presence of magnetic field is crucial in the transport of energy through the solar atmosphere. Recent ground-based and space-borne observations of the quiet Sun have revealed t…
Multi-component Decomposition of Astronomical Spectra by Compressed Sensing
Mark C. M. Cheung, Bart De Pontieu, Juan Martınez-Sykora +9
The signal measured by an astronomical spectrometer may be due to radiation from a multi-component mixture of plasmas with a range of physical properties (e.g. temperature, Doppler…