Zobrazeno 1 - 10
of 8 499
pro vyhledávání: '"Lani, A"'
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
For a class of $(N+1)$-dimensional systems of differential delay equations with a cyclic and monotone negative feedback structure, we construct a two-dimensional invariant manifold, on which phase curves spiral outward towards a bounding periodic orb
Externí odkaz:
http://arxiv.org/abs/2408.06548
A simple non-autonomous scalar differential equation with delay, exponential decay, nonlinear negative feedback and a periodic multiplicative coefficient is considered. It is shown that stable slowly oscillating periodic solutions with the period of
Externí odkaz:
http://arxiv.org/abs/2408.06528
Solar wind modelling has become a crucial area of study due to the increased dependence of modern society on technology, navigation, and power systems. Accurate space weather forecasts can predict upcoming threats to Earth's geospace. In this study,
Externí odkaz:
http://arxiv.org/abs/2407.17903
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:
Lani, Giovanna, Marzari, Nicola
We investigate analytically the performance of many-body energy functionals, derived respectively by Klein and Luttinger and Ward, at different levels of diagrammatic approximations, ranging from second Born, to GW, to the so-called T-matrix, for the
Externí odkaz:
http://arxiv.org/abs/2404.16453
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
We pose a natural generalization to the well-studied and difficult no-three-in-a-line problem: How many points can be chosen on an $n \times n$ grid such that no three of them form an angle of $\theta$? In this paper, we classify which angles yield n
Externí odkaz:
http://arxiv.org/abs/2311.13183
A graph $G$ is $\textit{universal}$ for a (finite) family $\mathcal{H}$ of graphs if every $H \in \mathcal{H}$ is a subgraph of $G$. For a given family $\mathcal{H}$, the goal is to determine the smallest number of edges an $\mathcal{H}$-universal gr
Externí odkaz:
http://arxiv.org/abs/2311.05500