Zobrazeno 1 - 10
of 1 630
pro vyhledávání: '"Poedts S"'
Publikováno v:
Astronomy and Astrophysics 2014
The new in situ measurements of the Solar Orbiter mission contribute to the knowledge of the suprathermal populations in the solar wind, especially of ions and protons whose characterization, although still in the early phase, seems to suggest a majo
Externí odkaz:
http://arxiv.org/abs/2409.09180
Autor:
Wang, H. P., Poedts, S., Lani, A., Brchnelova, M., Baratashvili, T., Linan, L., Zhang, F., Hou, D. W., Zhou, Y. H.
MHD coronal models are critical in the Sun-to-Earth model chain and the most complex and computationally intensive component, particularly the time-evolving coronal models, typically driven by a series of time-evolving photospheric magnetograms. Ther
Externí odkaz:
http://arxiv.org/abs/2409.02043
SIP-IFVM: An efficient time-accurate implicit MHD model of corona and CME with strong magnetic field
Autor:
Wang, H. P., Guo, J. H., Yang, L. P., Poedts, S., Zhang, F., Lani, A., Baratashvili, T., Linan, L., Lin, R., Guo, Y.
CMEs are one of the main drivers of space weather. However, robust and efficient numerical modeling of the initial stages of CME propagation and evolution process in the sub-Alfvenic corona is still lacking. Based on the highly efficient quasi-steady
Externí odkaz:
http://arxiv.org/abs/2409.02022
In situ observations by the Parker Solar Probe (PSP) have revealed new properties of the proton velocity distributions, including hammerhead features that suggest non-isotropic broadening of the beams. The present work proposes a very plausible expla
Externí odkaz:
http://arxiv.org/abs/2409.01997
Autor:
Guo, J. H., Linan, L., Poedts, S., Guo, Y., Schmieder, B., Lani, A., Ni, Y. W., Brchnelova, M., Perri, B., Baratashvili, T., Li, S. T., Chen, P. F.
Coronal mass ejections (CMEs) stand as intense eruptions of magnetized plasma from the Sun, playing a pivotal role in driving significant changes of the heliospheric environment. Deducing the properties of CMEs from their progenitors in solar source
Externí odkaz:
http://arxiv.org/abs/2407.09457
Autor:
Rodriguez, L., Shukhobodskaia, D., Niemela, A., Maharana, A., Samara, E., Verbeke, C., Magdalenic, J., Vansintjan, R., Mierla, M., Scolini, C., Sarkar, R., Kilpua, E., Asvestari, E., Herbst, K., Lapenta, G., Chaduteau, A. D., Pomoell, J., Poedts, S.
Publikováno v:
A&A 689, A187 (2024)
Aims. We present the validation results for arrival times and geomagnetic impact of Coronal Mass Ejections (CMEs), using the cone and spheromak CME models implemented in EUropean Heliospheric FORecasting Information Asset (EUHFORIA). Validating numer
Externí odkaz:
http://arxiv.org/abs/2405.04637
Publikováno v:
A&A, 2024, 683, A86
The power spectra of the fluctuation noise of the solar active region (AR) areas and magnetic fluxes sequentially observed in time contain information about their geometrical features and the related fundamental physical processes. These spectra are
Externí odkaz:
http://arxiv.org/abs/2401.07134
Autor:
Guo, Jinhan, Linan, L., Poedts, S., Guo, Y., Lani, A., Schmieder, B., Brchnelova, M., Perri, B., Baratashvili, T., Ni, Y. W., Chen, P. F.
Context: Coronal mass ejections (CMEs) are rapid eruptions of magnetized plasma that occur on the Sun, which are known as the main drivers of adverse space weather. Accurately tracking their evolution in the heliosphere in numerical models is of utmo
Externí odkaz:
http://arxiv.org/abs/2311.13432
Autor:
Guo, J. H., Ni, Y. W., Guo, Y., Xia, C., Schmieder, B., Poedts, S., Zhong, Z., Zhou, Y. H., Yu, F., Chen, P. F.
Magnetic flux ropes are a bundle of twisted magnetic field lines produced by internal electric currents, which are responsible for solar eruptions and are the major drivers of geomagnetic storms. As such, it is crucial to develop a numerical model th
Externí odkaz:
http://arxiv.org/abs/2310.19617
The aim of this paper is to present the implementation of two new CME models in the space weather forecasting tool, EUHFORIA. We introduce the two toroidal CME models analytically, along with their numerical implementation in EUHFORIA. One model is b
Externí odkaz:
http://arxiv.org/abs/2310.17239