Zobrazeno 1 - 10
of 883
pro vyhledávání: '"A. Aulanier"'
Autor:
Faber, Jonas Thoen, Joshi, Reetika, van der Voort, Luc Rouppe, Wedemeyer, Sven, Fletcher, Lyndsay, Aulanier, Guillaume, Nóbrega-Siverio, Daniel
Context. Since the mechanism of energy release from solar flares is still not fully understood, the study of fine-scale features developing during flares becomes important for progressing towards a consistent picture of the essential physical mechani
Externí odkaz:
http://arxiv.org/abs/2411.18233
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
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
Understanding the early evolution of coronal mass ejections (CMEs), in particular their initiation, is the key to forecasting solar eruptions and induced disastrous space weather. Although many initiation mechanisms have been proposed, a full underst
Externí odkaz:
http://arxiv.org/abs/2402.16679
The properties of pre-eruptive structures and coronal mass ejections (CMEs) are characterized by those of their footpoints, the latter of which thus attract great interest. However, how to identify the footpoints of pre-eruptive structures and how to
Externí odkaz:
http://arxiv.org/abs/2310.13532
Coronal mass ejections (CMEs) are explosive plasma phenomena prevalently occurring on the Sun and probably on other magnetically active stars. However, how their pre-eruptive configuration evolves toward the main explosion remains elusive. Here, base
Externí odkaz:
http://arxiv.org/abs/2308.13136
Autor:
Prasad, Avijeet, Kumar, Sanjay, Sterling, Alphonse C., Moore, Ronald L., Aulanier, Guillaume, Bhattacharyya, R., Hu, Qiang
Publikováno v:
A&A 677, A43 (2023)
Erupting magnetic flux ropes (MFRs) play a crucial role in producing solar flares. However, the formation of erupting MFRs in complex coronal magnetic configurations and their subsequent evolution in the flaring events are not fully understood. We pe
Externí odkaz:
http://arxiv.org/abs/2307.06572
Autor:
Antolin, P., Dolliou, A., Auchère, F., Chitta, L. P., Parenti, S., Berghmans, D., Cuadrado, R. Aznar, Barczynski, K., Gissot, S., Harra, L., Huang, Z., Janvier, M., Kraaikamp, E., Long, D. M., Mandal, S., Peter, H., Rodriguez, L., Schühle, U., Smith, P. J., Solanki, S. K., Stegen, K., Teriaca, L., Verbeeck, C., West, M. J., Zhukov, A. N., Appourchaux, T., Aulanier, G., Buchlin, E., Delmotte, F., Gilles, J. M., Haberreiter, M., Halain, J. -P., Heerlein, K., Hochedez, J. -F., Gyo, M., Poedts, S., Rochus, P.
Publikováno v:
A&A 676, A112 (2023)
Coronal rain is the most dramatic cooling phenomenon of the solar corona and an essential diagnostic tool for the coronal heating properties. A puzzling feature of the solar corona, besides the heating, is its EUV filamentary structure and variabilit
Externí odkaz:
http://arxiv.org/abs/2305.11691
Autor:
Cheng, X., Priest, E. R., Li, H. T., Chen, J., Aulanier, G., Chitta, L. P., Wang, Y. L., Peter, H., Zhu, X. S., Xing, C., Ding, M. D., Solanki, S. K., Berghmans, D., Teriaca, L., Cuadrado, R. Aznar, Zhukov, A. N., Guo, Y., Long, D., Harra, L., Smith, P. J., Rodriguez, L., Verbeeck, C., Barczynski, K., Parenti, S.
Magnetic reconnection is a key mechanism involved in solar eruptions and is also a prime possibility to heat the low corona to millions of degrees. Here, we present ultra-high-resolution extreme ultraviolet observations of persistent null-point recon
Externí odkaz:
http://arxiv.org/abs/2304.08725
Publikováno v:
A&A 673, A79 (2023)
Low-altitude twisted magnetic fields may be relevant to atmospheric heating in the quiet Sun, but the exact role, topology, and formation of these twisted fields remains to be studied. We investigate the formation and evolution of a preflare flux rop
Externí odkaz:
http://arxiv.org/abs/2303.11738