Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.3k papers
- University of CopenhagenDK1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.8k papers
- Lawrence Berkeley National LaboratoryUS1.8k papers
- Heidelberg UniversityDE1.8k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT1.7k papers
- European Organization for Nuclear ResearchCH1.7k papers
- University of BergenNO1.6k papers
- University College LondonGB1.6k papers
- University of BolognaIT1.6k papers
- The Ohio State UniversityUS1.6k papers
41 papers · 2 filters
SunnyNet: A neural network approach to 3D non-LTE radiative transfer
Bruce A. Chappell, Tiago M. D. Pereira
Context. Computing spectra from 3D simulations of stellar atmospheres when allowing for departures from local thermodynamic equilibrium (non-LTE) is computationally very intensive.…
The formation and heating of chromospheric fibrils in a radiation-MHD simulation
M. K. Druett, J. Leenaarts, M. Carlsson +1
Aims: We examine the movements of mass elements within dense fibrils using passive tracer particles (corks) in order to understand fibril creation and destruction processes. Method…
Comparison of the Hall Magnetohydrodynamics and Magnetohydrodynamics evolution of a flaring solar active region
Kamlesh Bora, Ramit Bhattacharyya, Avijeet Prasad +2
This work analyzes the Hall magnetohydrodynamics (HMHD) and magnetohydrodynamics (MHD) numerical simulations of a flaring solar active region as a testbed while idealizing the coro…
EMISSA -- Exploring Millimeter Indicators of Solar-Stellar Activity I. The Initial mm-cm Main Sequence Star Sample
Atul Mohan, Sven Wedemeyer, Sneha Pandit +2
Due to their wide wavelength coverage across the millimetre to centimetre (mm - cm) range and their increased sensitivity, modern interferometric arrays facilitate observations of…
Improvement of the Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Inversion Code
Ana Belén Griñón-Marín, Adur Pastor Yabar, Yang Liu +2
A spectral line inversion code, Very Fast Inversion of the Stokes Vector (VFISV), has been used since May 2010 to infer the solar atmospheric parameters from the spectropolarimetri…
Characterising coronal turbulence using snapshot imaging of radio bursts in 80-200 MHz
Atul Mohan
Metrewave solar type-III radio bursts offer a unique means to study the properties of turbulence across the coronal heights.Theoretical models have shown that the apparent intensit…
Forward modelling of heating within a coronal arcade
Lianne Fyfe, Thomas Howson, Ineke De Moortel
Aims. We investigate the synthetic observational signatures from numerical models of coronal heating in an arcade to determine what features are associated with such heating, and w…
First observations from the SPICE EUV spectrometer on Solar Orbiter
A. Fludra, M. Caldwell, A. Giunta +28
We present first science observations taken during the commissioning activities of the Spectral Imaging of the Coronal Environment (SPICE) instrument on the ESA/NASA Solar Orbiter…
Linking the Sun to the Heliosphere Using Composition Data and Modelling. A Test Case with a Coronal Jet
Susanna Parenti, Iulia Chifu, Giulio Del Zanna +13
Our understanding of the formation and evolution of the corona and the heliosphere is linked to our capability of properly interpreting the data from remote sensing and in-situ obs…
Investigating coronal wave energy estimates using synthetic non-thermal line widths
Lianne Fyfe, Thomas Howson, Ineke De Moortel +2
Aims. Estimates of coronal wave energy remain uncertain as a large fraction of the energy is likely hidden in the non-thermal line widths of emission lines. In order to estimate th…
Magnetic reconnection and the Kelvin-Helmholtz instability in the solar corona
Thomas Howson, Ineke De Moortel, David Pontin
Context. The magnetic Kelvin-Helmholtz instability (KHI) has been proposed as a means of generating magnetohy- drodynamic turbulence and encouraging wave energy dissipation in the…
The Sun at millimeter wavelengths. III. Impact of the spatial resolution on solar ALMA observations
Henrik Eklund, Sven Wedemeyer, Mikołaj Szydlarski +1
Interferometric observations of the Sun with ALMA provide valuable diagnostic tools for studying the small-scale dynamics of the solar atmosphere. Estimations of the observability…
The Solar ALMA Science Archive (SALSA)
Vasco M. J. Henriques, Shahin Jafarzadeh, Juan Camilo Guevara Gómez +5
In December 2016, the Atacama Large Millimeter/submillimeter Array (ALMA) carried out the first regular observations of the Sun. These early observations and the reduction of the r…
Solar Atmosphere Radiative Transfer Model Comparison based on 3D MHD simulations
M. Haberreiter, S. Criscuoli, M. Rempel +1
The reconstruction of the solar spectral irradiance (SSI) on various time scales is essential for the understanding of the Earth's climate response to the SSI variability. The driv…
Solar oxygen abundance
Maria Bergemann, Richard Hoppe, Ekaterina Semenova +10
Motivated by the controversy over the surface metallicity of the Sun, we present a re-analysis of the solar photospheric oxygen (O) abundance. New atomic models of O and Ni are use…
Solar surges related to UV bursts: Characterization through k-means, inversions and density diagnostics
D. Nóbrega Siverio, S. L. Guglielmino, A. Sainz Dalda
Surges are cool and dense ejections typically observed in chromospheric lines and closely related to other solar phenomena like UV bursts or coronal jets. Our aim is to address the…
On the Origin of Magnetic Pertubations associated with the FIP effect
M. Murabito, M. Stangalini, D. Baker +9
In \citet{Stangalini20} and \citet{Deb20}, magnetic oscillations were detected in the chromosphere of a large sunspot and found to be linked to the coronal locations where a First…
DEATHSTAR: Nearby AGB stars with the Atacama Compact Array II. CO envelope sizes and asymmetries: The S-type stars
M. Andriantsaralaza, S. Ramstedt, W. H. T. Vlemmings +13
We aim to constrain the sizes of the CO circumstellar envelopes (CSEs) of 16 S-type stars, along with an additional 7 and 4 CSEs of C-type and M-type AGB stars, respectively. We ma…
Evidence of multithermal nature of spicular downflows. Impact on solar atmospheric heating
Souvik Bose, Luc Rouppe van der Voort, Jayant Joshi +4
Spectroscopic observations of the emission lines formed in the solar transition region (TR) commonly show persistent downflows of the order of 10--15 km/s. The cause of such downfl…
On the Importance of Ca II Photoionisation by the Hydrogen Lyman Transitions in Solar Flare Models
Christopher M. J. Osborne, Petr Heinzel, Jana Kašparová +1
The forward fitting of solar flare observations with radiation-hydrodynamic simulations is a common technique for learning about energy deposition and atmospheric evolution during…
Probing the Physics of the Solar Atmosphere with the Multi-slit Solar Explorer (MUSE): II. Flares and Eruptions
Mark C. M. Cheung, Juan Martínez-Sykora, Paola Testa +25
Current state-of-the-art spectrographs cannot resolve the fundamental spatial (sub-arcseconds) and temporal scales (less than a few tens of seconds) of the coronal dynamics of sola…
Probing the physics of the solar atmosphere with the Multi-slit Solar Explorer (MUSE): I. Coronal Heating
Bart De Pontieu, Paola Testa, Juan Martinez-Sykora +24
The Multi-slit Solar Explorer (MUSE) is a proposed NASA MIDEX mission, currently in Phase A, composed of a multi-slit EUV spectrograph (in three narrow spectral bands centered arou…
A fast multi-dimensional magnetohydrodynamic formulation of the transition region adaptive conduction (TRAC) method
C. D. Johnston, A. W. Hood, I. De Moortel +2
We have demonstrated that the Transition Region Adaptive Conduction (TRAC) method permits fast and accurate numerical solutions of the field-aligned hydrodynamic equations, success…
Diagnostic capabilities of spectropolarimetric observations for understanding solar phenomena I. Zeeman-sensitive photospheric lines
C. Quintero Noda, P. S. Barklem, R. Gafeira +7
Future ground-based telescopes will expand our capabilities for simultaneous multi-line polarimetric observations in a wide range of wavelengths, from the near-ultraviolet to the n…