Zobrazeno 1 - 10
of 1 574
pro vyhledávání: '"Pariat, E."'
Context. Relative field line helicity (RFLH) is a recently developed quantity which can approximate the density of relative magnetic helicity. Aims. This paper aims to determine whether RFLH can be used as an indicator of solar eruptivity. Methods. S
Externí odkaz:
http://arxiv.org/abs/2312.13950
Autor:
Valori, G., Calchetti, D., Vacas, A. Moreno, Pariat, É., Solanki, S. K., Löschl, P., Hirzberger, J., Parenti, S., Albert, K., Jorge, N. Albelo, Álvarez-Herrero, A., Appourchaux, T., Rubio, L. R. Bellot, Rodríguez, J. Blanco, Campos-Jara, A., Feller, A., Gandorfer, A., Parejo, P. García, Germerott, D., Gizon, L., Cama, J. M. Gómez, Guerrero, L., Gutierrez-Marques, P., Kahil, F., Kolleck, M., Korpi-Lagg, A., Suárez, D. Orozco, Pérez-Grande, I., Kilders, E. Sanchis, Schou, J., Schühle, U., Sinjan, J., Staub, J., Strecker, H., Iniesta, J. C. del Toro, Volkmer, R., Woch, J.
Publikováno v:
A&A 677, A25 (2023)
Spectropolarimetric reconstructions of the photospheric vector magnetic field are intrinsically limited by the 180$^\circ$-ambiguity in the orientation of the transverse component. So far, the removal of such an ambiguity has required assumptions abo
Externí odkaz:
http://arxiv.org/abs/2307.09907
Publikováno v:
A&A 669, A33 (2023)
While free/non-potential magnetic energy is a necessary element of any active phenomenon in the solar corona, its role as a marker of the trigger of eruptive process remains elusive. Based on the unique decomposition of the magnetic field into potent
Externí odkaz:
http://arxiv.org/abs/2211.11265
Autor:
Thalmann, J. K., Georgoulis, M. K., Liu, Y., Pariat, E., Valori, G., Anfinogentov, S., Chen, F., Guo, Y., Moraitis, K., Yang, S., Mastrano, A.
In this ISSI-supported series of studies on magnetic helicity in the Sun, we systematically implement different magnetic helicity calculation methods on high-quality solar magnetogram observations. We apply finite-volume, discrete flux tube (in parti
Externí odkaz:
http://arxiv.org/abs/2108.08525
Autor:
Georgoulis, M. K., Bloomfield, D. S., Piana, M., Massone, A. M., Soldati, M., Gallagher, P. T., Pariat, E., Vilmer, N., Buchlin, E., Baudin, F., Csillaghy, A., Sathiapal, H., Jackson, D. R., Alingery, P., Benvenuto, F., Campi, C., Florios, K., Gontikakis, C., Guennou, C., Guerra, J. A., Kontogiannis, I., Latorre, V., Murray, S. A., Park, S. -H., von Stachelski, S., Torbica, A., Vischi, D., Worsfold, M.
Publikováno v:
Journal of Space Weather and Space Climate, 2021
The EU funded the FLARECAST project, that ran from Jan 2015 until Feb 2018. FLARECAST had a R2O focus, and introduced several innovations into the discipline of solar flare forecasting. FLARECAST innovations were: first, the treatment of hundreds of
Externí odkaz:
http://arxiv.org/abs/2105.05993
Autor:
Zouganelis, I., De Groof, A., Walsh, A. P., Williams, D. R., Mueller, D., Cyr, O. C. St, Auchere, F., Berghmans, D., Fludra, A., Horbury, T. S., Howard, R. A., Krucker, S., Maksimovic, M., Owen, C. J., Rodriiguez-Pacheco, J., Romoli, M., Solanki, S. K., Watson, C., Sanchez, L., Lefort, J., Osuna, P., Gilbert, H. R., Nieves-Chinchilla, T., Abbo, L., Alexandrova, O., Anastasiadis, A., Andretta, V., Antonucci, E., Appourchaux, T., Aran, A., Arge, C. N., Aulanier, G., Baker, D., Bale, S. D., Battaglia, M., Rubio, L. Bellot, Bemporad, A., Berthomier, M., Bocchialini, K., Bonnin, X., Brun, A. S., Bruno, R., Buchlin, E., Buechner, J., Bucik, R., Carcaboso, F., Carr, R., Carrasco-Blazquez, I., Cecconi, B., Cangas, I. Cernuda, Chen, C. H. K., Chitta, L. P., Chust, T., Dalmasse, K., D'Amicis, R., Da Deppo, V., De Marco, R., Dolei, S., Dolla, L., de Wit, T. Dudok, van Driel-Gesztelyi, L., Eastwood, J. P., Lara, F. Espinosa, Etesi, L., Fedorov, A., Felix-Redondo, F., Fineschi, S., Fleck, B., Fontaine, D., Fox, N. J., Gandorfer, A., Genot, V., Georgoulis, M. K., Gissot, S., Giunta, A., Gizon, L., Gomez-Herrero, R., Gontikakis, C., Graham, G., Green, L., Grundy, T., Haberreiter, M., Harra, L. K., Hassler, D. M., Hirzberger, J., Ho, G. C., Hurford, G., Innes, D., Issautier, K., James, A. W., Janitzek, N., Janvier, M., Jeffrey, N., Jenkins, J., Khotyaintsev, Y., Klein, K. -L., Kontar, E. P., Kontogiannis, I., Krafft, C., Krasnoselskikh, V., Kretzschmar, M., Labrosse, N., Lagg, A., Landini, F., Lavraud, B., Leon, I., Lepri, S. T., Lewis, G. R., Liewer, P., Linker, J., Livi, S., Long, D. M., Louarn, P., Malandraki, O., Maloney, S., Martinez-Pillet, V., Martinovic, M., Masson, A., Matthews, S., Matteini, L., Meyer-Vernet, N., Moraitis, K., Morton, R. J., Musset, S., Nicolaou, G., Nindos, A., O'Brien, H., Suarez, D. Orozco, Owens, M., Pancrazzi, M., Papaioannou, A., Parenti, S., Pariat, E., Patsourakos, S., Perrone, D., Peter, H., Pinto, R. F., Plainaki, C., Plettemeier, D., Plunkett, S. P., Raines, J. M., Raouafi, N., Reid, H., Retino, A., Rezeau, L., Rochus, P., Rodriguez, L., Rodriguez-Garcia, L., Roth, M., Rouillard, A. P., Sahraoui, F., Sasso, C., Schou, J., Schuehle, U., Sorriso-Valvo, L., Soucek, J., Spadaro, D., Stangalini, M., Stansby, D., Steller, M., Strugarek, A., Stverak, S., Susino, R., Telloni, D., Terasa, C., Teriaca, L., Toledo-Redondo, S., Iniesta, J. C. del Toro, Tsiropoula, G., Tsounis, A., Tziotziou, K., Valentini, F., Vaivads, A., Vecchio, A., Velli, M., Verbeeck, C., Verdini, A., Verscharen, D., Vilmer, N., Vourlidas, A., Wicks, R., Wimmer-Schweingruber, R. F., Wiegelmann, T., Young, P. R., Zhukov, A. N.
Publikováno v:
A&A 642, A3 (2020)
Solar Orbiter is the first space mission observing the solar plasma both in situ and remotely, from a close distance, in and out of the ecliptic. The ultimate goal is to understand how the Sun produces and controls the heliosphere, filling the Solar
Externí odkaz:
http://arxiv.org/abs/2009.10772
We compare the coronal magnetic energy and helicity of two solar active regions (ARs), prolific in major eruptive (AR~11158) and confined (AR~12192) flaring, and analyze the potential of deduced proxies to forecast upcoming flares. Based on nonlinear
Externí odkaz:
http://arxiv.org/abs/1910.06563
Publikováno v:
A&A 628, A50 (2019)
Context. In September 2017 the largest X-class flare of Solar Cycle 24 occurred from the most active region (AR) of this cycle, AR 12673. The AR attracted much interest because of its unique morphological and evolution characteristics. Among the para
Externí odkaz:
http://arxiv.org/abs/1907.06365
Publikováno v:
A&A 624, A51 (2019)
Context. Magnetic helicity is an important quantity in studies of magnetized plasmas as it provides a measure of the geometrical complexity of the magnetic field in a given volume. A more detailed description of the spatial distribution of magnetic h
Externí odkaz:
http://arxiv.org/abs/1902.10410
Magnetic helicity is a quantity of great importance in solar studies because it is conserved in ideal magneto-hydrodynamics. While many methods to compute magnetic helicity in Cartesian finite volumes exist, in spherical coordinates, the natural coor
Externí odkaz:
http://arxiv.org/abs/1806.03011