Zobrazeno 1 - 10
of 718
pro vyhledávání: '"CARLSSON, Mats"'
Space weather modelling has been gaining importance due to our increasing dependency on technology sensitive to space weather effects, such as satellite services, air traffic and power grids. Improving the reliability, accuracy and numerical performa
Externí odkaz:
http://arxiv.org/abs/2412.10397
The Ca II H & K lines are strong chromospheric diagnostics that can be used to determine the temperature stratification and magnetic structure of the solar atmosphere. The Atacama Large Millimetre/Submillimetre Array (ALMA) offers complementary infor
Externí odkaz:
http://arxiv.org/abs/2405.04871
Publikováno v:
ApJ 969 121 (2024)
Optical flares have been observed from magnetically active stars for many decades; unsurprisingly, the spectra and temporal evolution are complicated. For example, the shortcomings of optically thin, static slab models have long been recognized when
Externí odkaz:
http://arxiv.org/abs/2404.13214
Publikováno v:
A&A 683, A95 (2024)
Plasmoid-mediated reconnection plays a fundamental role in different solar atmospheric phenomena. Numerical reproduction of this process is therefore essential for developing robust solar models. Our goal is to assess plasmoid-mediated reconnection a
Externí odkaz:
http://arxiv.org/abs/2401.01177
Autor:
Moe, Thore E., Pereira, Tiago M. D., van der Voort, Luc Rouppe, Carlsson, Mats, Hansteen, Viggo, Calvo, Flavio, Leenaarts, Jorrit
We aim to compare and contrast the typical shapes of synthetic Ca II 854.2 nm spectra found in Bifrost simulations having different magnetic activity with the spectral shapes found in a quiet Sun observation from the Swedish 1-m Solar Telescope (SST)
Externí odkaz:
http://arxiv.org/abs/2310.16611
Autor:
Carlsson, Mats, De Pontieu, Bart
The O I 1355{\AA} spectral line is one of the only optically thin lines that are both routinely observed and thought to be formed in the chromosphere. We present analysis of a variety of observations of this line with the Interface Region Imaging Spe
Externí odkaz:
http://arxiv.org/abs/2308.14067
Publikováno v:
A&A 675, A97 (2023)
Magnetic reconnection is a fundamental mechanism in astrophysics. A common challenge in mimicking this process numerically in particular for the Sun is that the solar electrical resistivity is small compared to the diffusive effects caused by the dis
Externí odkaz:
http://arxiv.org/abs/2305.18895
Autor:
Yardley, Stephanie L., Owen, Christopher J., Long, David M., Baker, Deborah, Brooks, David H., Polito, Vanessa, Green, Lucie M., Matthews, Sarah, Owens, Mathew, Lockwood, Mike, Stansby, David, James, Alexander W., Valori, Gherado, Giunta, Alessandra, Janvier, Miho, Ngampoopun, Nawin, Mihailescu, Teodora, To, Andy S. H., van Driel-Gesztelyi, Lidia, Demoulin, Pascal, D'Amicis, Raffaella, French, Ryan J., Suen, Gabriel H. H., Roulliard, Alexis P., Pinto, Rui F., Reville, Victor, Watson, Christopher J., Walsh, Andrew P., De Groof, Anik, Williams, David R., Zouganelis, Ioannis, Muller, Daniel, Berghmans, David, Auchere, Frederic, Harra, Louise, Scheuhle, Udo, Barczynski, Krysztof, Buchlin, Eric, Cuadrado, Regina Aznar, Kraaikamp, Emil, Mandal, Sudip, Parenti, Susanna, Peter, Hardi, Rodriguez, Luciano, Schwanitz, Conrad, Smith, Phil, Teriaca, Luca, Verbeeck, Cis, Zhukov, Andrei N., De Pontieu, Bart, Horbury, Tim, Solanki, Sami K., Iniesta, Jose Carlos del Toro, Woch, Joachim, Gandorfer, Achim, Hirzberger, Johann, Suarez, David Orozco, Appourchaux, Thierry, Calchetti, Daniele, Sinjan, Jonas, Kahil, Fatima, Albert, Kinga, Volkmer, Reiner, Carlsson, Mats, Fludra, Andrzej, Hassler, Don, Caldwell, Martin, Fredvik, Terje, Grundy, Tim, Guest, Steve, Haberreiter, Margit, Leeks, Sarah, Pelouze, Gabriel, Plowman, Joseph, Schmutz, Werner, Sidher, Sunil, Thompson, William T., Louarn, Philippe, Federov, Andrei
The Slow Solar Wind Connection Solar Orbiter Observing Plan (Slow Wind SOOP) was developed to utilise the extensive suite of remote sensing and in situ instruments on board the ESA/NASA Solar Orbiter mission to answer significant outstanding question
Externí odkaz:
http://arxiv.org/abs/2304.09570
Autor:
Carlsson, Mats, Fletcher, Lyndsay, Allred, Joel, Heinzel, Petr, Kasparova, Jana, Kowalski, Adam, Mathioudakis, Mihalis, Reid, Aaron, Simoes, Paulo J. A.
Publikováno v:
A&A 673, A150 (2023)
Context: Solar flares are the result of the sudden release of magnetic energy in the corona. Much of this energy goes into accelerating charged particles to high velocity. These particles travel along the magnetic field and the energy is dissipated w
Externí odkaz:
http://arxiv.org/abs/2304.02618
Publikováno v:
A&A 673, A137 (2023)
The Ha line, one of the most studied chromospheric diagnostics, is a tracer for magnetic field structures, while its line core intensity provides an estimate of the mass density. The brightness temperatures from Atacama Large Millimetre-submm Array (
Externí odkaz:
http://arxiv.org/abs/2303.15612