Zobrazeno 1 - 10
of 367
pro vyhledávání: '"M. Collados"'
Publikováno v:
A&A 607, A102 (2017)
We analyze spectropolarimetric sunspot umbra observations taken in the near-infrared Si i 1082.7 nm line taking NLTE effects into account. The data were obtained with the GRIS instrument installed at the German GREGOR telescope. A point spread functi
Externí odkaz:
http://arxiv.org/abs/1709.06773
Autor:
Balthasar, H., Gömöry, P., Manrique, S. J. González, Kuckein, C., Kavka, J., Kučera, A., Schwartz, P., Vašková, R., Berkefeld, T., Vera, M. Collados, Denker, C., Feller, A., Hofmann, A., Lagg, A., Nicklas, H., Suárez, D. Orozco, Yabar, A. Pastor, Rezaei, R., Schlichenmaier, R., Schmidt, D., Schmidt, W., Sigwarth, M., Sobotka, M., Solanki, S. K., Soltau, D., Staude, J., Strassmeier, K. G., Volkmer, R., von der Lühe, O., Waldmann, T.
Arch filament systems occur in active sunspot groups, where a fibril structure connects areas of opposite magnetic polarity, in contrast to active region filaments that follow the polarity inversion line. We used the GREGOR Infrared Spectrograph (GRI
Externí odkaz:
http://arxiv.org/abs/1609.01514
Autor:
Lagg, A., Solanki, S. K., Doerr, H. -P., González, M. J. Martínez, Riethmüller, T., Vera, M. Collados, Schlichenmaier, R., Suárez, D. Orozco, Franz, M., Feller, A., Kuckein, C., Schmidt, W., Ramos, A. Asensio, Yabar, A. Pastor, von der Lühe, O., Denker, C., Balthasar, H., Volkmer, R., Staude, J., Hofmann, A., Strassmeier, K., Kneer, F., Waldmann, T., Borrero, J. M., Sobotka, M., Verma, M., Louis, R. E., Rezaei, R., Soltau, D., Berkefeld, T., Sigwarth, M., Schmidt, D., Kiess, C., Nicklas, H.
Publikováno v:
A&A 596, A6 (2016)
Context. Investigations of the magnetism of the quiet Sun are hindered by extremely weak polarization signals in Fraunhofer spectral lines. Photon noise, straylight, and the systematically different sensitivity of the Zeeman effect to longitudinal an
Externí odkaz:
http://arxiv.org/abs/1605.06324
Autor:
Sobotka, M., Dudík, J., Denker, C., Balthasar, H., Jurčák, J., Liu, W., Berkefeld, T., Vera, M. Collados, Feller, A., Hofmann, A., Kneer, F., Kuckein, C., Lagg, A., Louis, R. E., von der Lühe, O., Nicklas, H., Schlichenmaier, R., Schmidt, D., Schmidt, W., Sigwarth, M., Solanki, S. K., Soltau, D., Staude, J., Strassmeier, K. G., Volkmer, R., Waldmann, T.
Publikováno v:
A&A 596, A1 (2016)
A small flare ribbon above a sunspot umbra in active region 12205 was observed on November 7, 2014, at 12:00 UT in the blue imaging channel of the 1.5 m GREGOR telescope, using a 1 A Ca II H interference filter. Context observations from the Atmosphe
Externí odkaz:
http://arxiv.org/abs/1605.00464
Autor:
Hedelt, P., Alonso, R., Brown, T., Vera, M. Collados, Rauer, H., Schleicher, H., Schmidt, W., Schreier, F., Titz, R.
The transit of Venus in 2004 offered the rare possibility to remotely sense a well-known planetary atmosphere using ground-based observations for absorption spectroscopy. Transmission spectra of Venus' atmosphere were obtained in the near infrared us
Externí odkaz:
http://arxiv.org/abs/1107.3700
Akademický článek
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Autor:
J. Cózar-Castellano, M. Núñez Cagigal, N. Vega, A. Mato, M. Barreto, M. Belío-Asín, Y. Carballo-Martín, M. Collados, N. Feijoo Amoedo, B. Femenía, J. Gonzalez-Cava, C. Padilla-Hernández, J. Sánchez-Capuchino, Mahy Soler
Publikováno v:
Modeling, Systems Engineering, and Project Management for Astronomy X.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f49450028c758b9b5c646087d2effa1
https://doi.org/10.1117/12.2629629
https://doi.org/10.1117/12.2629629
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
C. Dominguez-Tagle, M. Collados, R. Lopez, J. J. Vaz Cedillo, M. A. Esteves, O. Grassin, N. Vega, A. Mato, J. Quintero, H. Rodriguez, S. Regalado, F. Gonzalez
Publikováno v:
World Scientific
An Integral Field Unit (IFU) based on image slicers has been added to the GREGOR Infrared Spectrograph (GRIS). This upgrade to the instrument makes possible 2D spectropolarimetry in the near-infrared by simultaneously recording the full Stokes profil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2c2a9d251e4c26a20c06a3b3b8226c8
Autor:
P. Hunana, T. Passot, E. Khomenko, D. Martínez-Gómez, M. Collados, A. Tenerani, G. P. Zank, Y. Maneva, M. L. Goldstein, G. M. Webb
Publikováno v:
The Astrophysical Journal Supplement Series. 260:26
Several generalizations of the well-known fluid model of Braginskii (Rev. of Plasma Phys., 1965) are considered. We use the Landau collisional operator and the moment method of Grad. We focus on the 21-moment model that is analogous to the Braginskii
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::666199e74e9fba593332b9cdd23df4d1
https://doi.org/10.3847/1538-4365/ac5044
https://doi.org/10.3847/1538-4365/ac5044