Zobrazeno 1 - 10
of 6 699
pro vyhledávání: '"VERMA, M."'
Publikováno v:
A&A 691, A119 (2024)
The emergence of magnetic flux, its transition to complex configurations, and the pre-eruptive state of active regions are probed using photospheric magnetograms. We aim to pinpoint different evolutionary stages in active regions, explore their diffe
Externí odkaz:
http://arxiv.org/abs/2408.07047
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:
Di Capua, R., Verma, M., Radovic, M., Strocov, V. N., Piamonteze, C., Guedes, E. B., Plumb, N., Chen, Yu, D'Antuono, M., De Luca, G. M., Di Gennaro, E., Stornaiuolo, D., Preziosi, D., Jouault, B., Granozio, F. Miletto, Sambri, A., Pentcheva, R., Ghiringhelli, G., Salluzzo, M.
Multi-orbital physics in quasi-two-dimensional electron gases (q2DEGs) triggers unique phenomena not observed in bulk materials, such as unconventional superconductivity and magnetism. Here, we investigate the mechanism of orbital selective switching
Externí odkaz:
http://arxiv.org/abs/2109.06138
Publikováno v:
In Solar Energy Materials and Solar Cells 1 July 2024 271
Autor:
Kuckein, C., Balthasar, H., Noda, C. Quintero, Diercke, A., Arjona, J. C. Trelles, Cobo, B. Ruiz, Felipe, T., Denker, C., Verma, M., Kontogiannis, I., Sobotka, M.
Publikováno v:
A&A 653, A165 (2021)
The spectral window, containing Fraunhofer lines formed in the solar photosphere, around the magnetically sensitive Cr I lines at 5780.9, 5781.1, 5781.7, 5783.0, and 5783.8 \r{A}, with Land\'e g-factors between 1.6 and 2.5, is explored. The goal is t
Externí odkaz:
http://arxiv.org/abs/2107.11116
High-resolution observations of polar crown and high-latitude filaments are scarce. We present a unique sample of such filaments observed in high-resolution H$\alpha$ narrow-band filtergrams and broad-band images, which were obtained with a new fast
Externí odkaz:
http://arxiv.org/abs/2012.04349
Autor:
Abbasvand, V., Sobotka, M., Švanda, M., Heinzel, P., Rivas, Marta García, Denker, C., Balthasar, H., Verma, M., Kontogiannis, I., Koza, J., Korda, D., Kuckein, C.
Publikováno v:
A&A 642, A52 (2020)
Aims. To investigate the role of acoustic and magneto-acoustic waves in heating the solar chromosphere, observations in strong chromospheric lines are analyzed by comparing the deposited acoustic-energy flux with the total integrated radiative losses
Externí odkaz:
http://arxiv.org/abs/2008.02688
We present solar full-disk observations, which were recorded at the Einstein Tower during the years 1943 - 1991 (Solar Cycles 18 - 22). High-school students from Potsdam and Berlin digitized more than 3500 full-disk images during two- to three-week i
Externí odkaz:
http://arxiv.org/abs/2007.14744
We study the evolution of a mini-filament eruption in a quiet region at the center of the solar disk and its impact on the ambient atmosphere. We used high-spectral resolution imaging spectroscopy in H$\alpha$ acquired by the echelle spectrograph of
Externí odkaz:
http://arxiv.org/abs/2007.01564
Autor:
Palacios, J., Utz, D., Hofmeister, S., Krikova, K., Gömöry, P., Kuckein, C., Denker, C., Verma, M., Manrique, S. J. González, Rozo, J. I. Campos, Koza, J., Temmer, M., Veronig, A., Diercke, A., Kontogiannis, I., Cid, C.
Publikováno v:
Solar Physics, 295, article 64 (2020)
A joint campaign of various space-borne and ground-based observatories, comprising the Japanese Hinode mission (HOP~338, 20\,--\,30~September 2017), the GREGOR solar telescope, and the \textit{Vacuum Tower Telescope} (VTT), investigated numerous targ
Externí odkaz:
http://arxiv.org/abs/2006.11779