Zobrazeno 1 - 10
of 2 457
pro vyhledávání: '"P, Fouque"'
We analyze both finite and infinite systems of Riccati equations derived from stochastic differential games on infinite networks. We discuss a connection to the Catalan numbers and the convergence of the Catalan functions by Fourier transforms.
Externí odkaz:
http://arxiv.org/abs/2408.09079
Autor:
Zaire, B., Donati, J. -F., Alencar, S. P., Bouvier, J., Moutou, C., Bellotti, S., Carmona, A., Petit, P., Kóspál, Á., Shang, H., Grankin, K., Manara, C., Alecian, E., Gregory, S. P., Fouqué, P., consortium, the SLS
This paper analyses spectropolarimetric observations of the classical T Tauri star (CTTS) GM Aurigae collected with SPIRou, the near-infrared spectropolarimeter at the Canada-France-Hawaii Telescope, as part of the SLS and SPICE Large Programs. We re
Externí odkaz:
http://arxiv.org/abs/2408.05864
Mean Field Control Games (MFCG), introduced in [Angiuli et al., 2022a], represent competitive games between a large number of large collaborative groups of agents in the infinite limit of number and size of groups. In this paper, we prove the converg
Externí odkaz:
http://arxiv.org/abs/2405.17017
Autor:
Bellotti, S., Morin, J., Lehmann, L. T., Petit, P., Hussain, G. A. J., Donati, J. -F., Folsom, C. P., Carmona, A., Martioli, E., Klein, B., Fouque, P., Moutou, C., Alencar, S., Artigau, E., Boisse, I., Bouchy, F., Bouvier, J., Cook, N. J., Delfosse, X., Doyon, R., Hebrard, G.
Dynamo models of stellar magnetic fields for partly and fully convective stars are guided by observational constraints. Zeeman-Doppler imaging has revealed a variety of magnetic field geometries and, for fully convective stars in particular, a dichot
Externí odkaz:
http://arxiv.org/abs/2403.08590
Autor:
Donati, J. -F., Finociety, B., Cristofari, P. I., Alencar, S. H. P., Moutou, C., Delfosse, X., Fouqué, P, Arnold, L., Baruteau, C., Kóspál, Á., Ménard, F., Carmona, A., Grankin, K., Takami, M., Artigau, E., Doyon, R., Hébrard, G., collaboration, the SLS
We report new observations of the classical T~Tauri star CI~Tau with the SPIRou near-infrared spectropolarimeter and velocimeter at the Canada-France-Hawaii Telescope (CFHT) in late 2019, 2020 and 2022, complemented with observations obtained with th
Externí odkaz:
http://arxiv.org/abs/2403.02166
We establish the convergence of the unified two-timescale Reinforcement Learning (RL) algorithm presented in a previous work by Angiuli et al. This algorithm provides solutions to Mean Field Game (MFG) or Mean Field Control (MFC) problems depending o
Externí odkaz:
http://arxiv.org/abs/2312.06659
Autor:
Lehmann, L. T., Donati, J. -F., Fouque, P., Moutou, C., Bellotti, S., Delfosse, X., Petit, P., Carmona, A., Morin, J., Vidotto, A. A., consortium, the SLS
In this paper, we study six slowly rotating mid-to-late M~dwarfs (rotation period $P_{\mathrm{rot}} \approx 40-190\,\mathrm{dy}$) by analysing spectropolarimetric data collected with SPIRou at the Canada-France-Hawaii Telescope as part of the SPIRou
Externí odkaz:
http://arxiv.org/abs/2311.05039
Autor:
Jahandar, Farbod, Doyon, René, Artigau, Étienne, Cook, Neil J., Cadieux, Charles, Lafrenière, David, Forveille, Thierry, Donati, Jean-François, Fouqué, Pascal, Carmona, Andrés, Cloutier, Ryan, Cristofari, Paul, Gaidos, Eric, da Silva, João Gomes, Malo, Lison, Martioli, Eder, Nascimento Jr., J. -D. do, Pelletier, Stefan, Vandal, Thomas, Venn, Kim
Determination of fundamental parameters of stars impacts all fields of astrophysics, from galaxy evolution to constraining the internal structure of exoplanets. This paper presents a detailed spectroscopic analysis of Barnard's star that compares an
Externí odkaz:
http://arxiv.org/abs/2310.12125
Autor:
Cristofari, P. I., Donati, J. -F., Moutou, C., Lehmann, L. T., Charpentier, P., Fouqué, P., Folsom, C. P., Masseron, T., Carmona, A., Delfosse, X., Petit, P., Artigau, E., Cook, N. J., consortium, the SLS
We present the results of an analysis aimed at probing the small-scale magnetic fields of M dwarfs observed with SPIRou, the nIR high-resolution spectro-polarimeter installed at the Canada-France-Hawaii Telescope, in the context of the SPIRou Legacy
Externí odkaz:
http://arxiv.org/abs/2310.08386
Autor:
Crozet, P., Morin, J., Ross, A. J., Bellotti, S., Donati, J. F., Fouqué, P., Moutou, C., Petit, P., Carmona, A., Kóspál, A., Adam, A. G., Tokaryk, D. W.
Molecular bands of metal oxides and hydrides dominate the optical and near-infrared spectra of M dwarfs. High-resolution spectra of these bands have immense potential for determining many properties of these stars, such as effective temperature, surf
Externí odkaz:
http://arxiv.org/abs/2310.04497