Zobrazeno 1 - 10
of 8 600
pro vyhledávání: '"van der Voort, A."'
Publikováno v:
ApJ 976 134 (2024)
Poynting flux generated by random shuffling of photospheric magnetic footpoints is transferred through the upper atmosphere of the Sun where the plasma is heated to over 1 MK in the corona. High spatiotemporal resolution observations of the lower atm
Externí odkaz:
http://arxiv.org/abs/2410.04964
When interpreting spectropolarimetric observations of the solar atmosphere, wavelength variations of the emergent intensity and polarization translate into information on the depth stratification of physical parameters. We aim to quantify how the inf
Externí odkaz:
http://arxiv.org/abs/2409.13677
Autor:
Baso, C. J. Díaz, Ramos, A. Asensio, Rodríguez, J. de la Cruz, Santos, J. M. da Silva, van der Voort, L. Rouppe
Full-Stokes polarimetric datasets, originating from slit-spectrograph or narrow-band filtergrams, are routinely acquired nowadays. The data rate is increasing with the advent of bi-dimensional spectropolarimeters and observing techniques that allow l
Externí odkaz:
http://arxiv.org/abs/2409.05156
Autor:
Joshi, Reetika, van der Voort, Luc Rouppe, Schmieder, Brigitte, Moreno-Insertis, Fernando, Prasad, Avijeet, Aulanier, Guillaume, Nóbrega-Siverio, Daniel
Publikováno v:
A&A 691, A198 (2024)
Solar jets are collimated plasma ejections along magnetic field lines observed in hot (EUV jets) and cool (chromospheric surges) temperature diagnostics. Their trigger mechanisms and the relationship between hot and cool jets are still not completely
Externí odkaz:
http://arxiv.org/abs/2408.17254
Publikováno v:
A&A 689, A156 (2024)
Quiet Sun Ellerman Bombs (QSEBs) are key indicators of small-scale photospheric magnetic reconnection events. Recent high-resolution observations have shown that they are ubiquitous and that large numbers of QSEBs can be found in the quiet Sun. We ai
Externí odkaz:
http://arxiv.org/abs/2406.09585
Autor:
Joshi, Reetika, Aulanier, Guillaume, Radcliffe, Alice, van der Voort, Luc Rouppe, Pariat, Etienne, Nóbrega-Siverio, Daniel, Schmieder, Brigitte
Publikováno v:
A&A 687, A172 (2024)
Solar jets are collimated plasma flows moving along magnetic field lines and accelerated at low altitude following magnetic reconnection. Several of them originate from anemone-shaped low-lying arcades and the most impulsive ones tend to be relativel
Externí odkaz:
http://arxiv.org/abs/2404.13171
Autor:
Nóbrega-Siverio, D., Cabello, I., Bose, S., van der Voort, L. H. M. Rouppe, Joshi, R., Froment, C., Henriques, V. M. J.
Publikováno v:
A&A 686, A218 (2024)
Advancements in instrumentation have revealed a multitude of small-scale EUV events in the solar atmosphere. Our aim is to employ high-resolution magnetograms to gain a detailed understanding of the magnetic origin of such phenomena. We have used coo
Externí odkaz:
http://arxiv.org/abs/2403.11652
Magnetic reconnection in the deep solar atmosphere can give rise to enhanced emission in the Balmer hydrogen lines, a phenomenon known as Ellerman bombs (EBs). It is most common to observe EBs in the H-alpha and H-beta lines. High quality shorter wav
Externí odkaz:
http://arxiv.org/abs/2401.12077
Autor:
Nóbrega-Siverio, D., Moreno-Insertis, F., Galsgaard, K, Krikova, K., van der Voort, L. Rouppe, Joshi, R., Madjarska, M. S.
The solar atmosphere is filled with clusters of hot small-scale loops commonly known as Coronal Bright Points (CBPs). These ubiquitous structures stand out in the Sun by their strong X-ray and/or extreme-ultraviolet (EUV) emission for hours to days,
Externí odkaz:
http://arxiv.org/abs/2311.11912
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