Zobrazeno 1 - 10
of 213
pro vyhledávání: '"LÖFDAHL, M."'
We discuss the chosen concepts, detailed design, implementation and calibration of the 85-electrode adaptive optics (AO) system of the Swedish 1-meter Solar Telescope (SST), which was installed in 2013. The AO system is unusual by using a combination
Externí odkaz:
http://arxiv.org/abs/2311.13690
Autor:
Pietrow, A. G. M., Cretignier, M., Druett, M. K., Alvarado-Gómez, J. D., Hofmeister, S. J., Verma, M., Kamlah, R., Baratella, M., Amazo-Gomez, E. M., Kontogiannis, I., Dineva, E., Warmuth, A., Denker, C., Poppenhaeger, K., Andriienko, O., Dumusque, X., Löfdahl, M. G.
Publikováno v:
A&A Volume 682, February 2024, A46
Stellar flares cannot be spatially resolved, which complicates ascertaining the physical processes behind particular spectral signatures. Due to their proximity to Earth, solar flares can serve as a stepping stone for understanding their stellar coun
Externí odkaz:
http://arxiv.org/abs/2309.03373
Autor:
Noda, C. Quintero, Schlichenmaier, R., Rubio, L. R. Bellot, Löfdahl, M. G., Khomenko, E., Jurcak, J., Leenaarts, J., Kuckein, C., Manrique, S. J. González, Gunar, S., Nelson, C. J., Rodríguez, J. de la Cruz, Tziotziou, K., Tsiropoula, G., Aulanier, G., Collados, M., team, the EST
Publikováno v:
A&A 666, A21 (2022)
The European Solar Telescope (EST) is a project aimed at studying the magnetic connectivity of the solar atmosphere, from the deep photosphere to the upper chromosphere. Its design combines the knowledge and expertise gathered by the European solar p
Externí odkaz:
http://arxiv.org/abs/2207.10905
Autor:
Kuridze, D., Mathioudakis, M., Morgan, H., Oliver, R., Kleint, L., Zaqarashvili, T. V., Reid, A., Koza, J., Löfdahl, M. G., Hillberg, T., Kukhianidze, V., Hanslmeier, A.
Here we report on the unique observation of flaring coronal loops at the solar limb using high resolution imaging spectropolarimetry from the Swedish 1-meter Solar Telescope. The vantage position, orientation and nature of the chromospheric material
Externí odkaz:
http://arxiv.org/abs/1902.07514
Akademický článek
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Autor:
Löfdahl, M. G., Hillberg, T., Rodriguez, J. de la Cruz, Vissers, G., Andriienko, O., Scharmer, G. B., Haugan, S. V. H., Fredvik, T.
Publikováno v:
A&A 653, A68 (2021)
Context: Data from ground-based, high-resolution solar telescopes can only be used for science with calibrations and processing, which requires detailed knowledge about the instrumentation. [...] Aims: We aim to provide observers with a user-friendly
Externí odkaz:
http://arxiv.org/abs/1804.03030
Akademický článek
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Publikováno v:
A&A 573, A40 (2015)
The production of science-ready data from major solar telescopes requires expertise beyond that of the typical observer. This is a consequence of the increasing complexity of instruments and observing sequences, which require calibrations and correct
Externí odkaz:
http://arxiv.org/abs/1406.0202
Autor:
Löfdahl, M. G., Scharmer, G. B.
Publikováno v:
Astronomy & Astrophysics, 537:A80, 2012
Recently measured straylight PSFs in Hinode/SOT make granulation contrast in observed data and synthetic MHD data consistent. Data from earthbound telescopes also need accurate correction for straylight and fixed optical aberrations. We aim to develo
Externí odkaz:
http://arxiv.org/abs/1110.2663
Observations with the 1-m Swedish Solar Telescope of the flows seen in penumbral filaments are presented. Time sequences of bright filaments show overturning motions strikingly similar to those seen along the walls of small isolated structures in the
Externí odkaz:
http://arxiv.org/abs/1008.0932