Zobrazeno 1 - 10
of 21 047
pro vyhledávání: '"Gratton"'
Motivated by observed discrepancies between ACT DR4 and Planck 2018 cosmic microwave background (CMB) anisotropy power spectra, particularly in the cross-correlation of temperature and E-mode polarization, we investigate challenges that may be encoun
Externí odkaz:
http://arxiv.org/abs/2412.13995
Autor:
Barbato, D., Mesa, D., D'Orazi, V., Desidera, S., Ruggieri, A., Farinato, J., Marafatto, L., Carolo, E., Vassallo, D., Ertel, S., Hom, J., Anche, R. M., Battaini, F., Becker, A., Bergomi, M., Biondi, F., Cardwell, A., Cerpelloni, P., Chauvin, G., Chinellato, S., Desgrange, C., Di Filippo, S., Dima, M., Machado, T. S. Gomes, Gratton, R., Greggio, D., Henning, Th., Kenworthy, M., Laudisio, F., Lazzoni, C., Leisenring, J., Lessio, L., Lorenzetto, A., Mohr, L., Montoya, M., Rodeghiero, G., Patience, J., Power, J., Ricci, D., Santhakumari, K. K. R., Sozzetti, A., Umbriaco, G., Pallauta, M. Vega, Viotto, V., Wagner, K.
The synergy between different detection methods is a key asset in exoplanetology, allowing for both precise characterization of detected exoplanets and robust constraints even in the case of non-detection. Recently, the interplay between imaging, rad
Externí odkaz:
http://arxiv.org/abs/2412.06404
Autor:
Mesa, D., Gratton, R., D'Orazi, V., Carolo, E., Vassallo, D., Farinato, J., Marafatto, L., Wagner, K., Hom, J., Ertel, S., Henning, Th., Desgrange, C., Barbato, D., Bergomi, M., Cerpelloni, P., Desidera, S., Di Filippo, S., Doelman, D., Machado, T. S. Gomes, Greggio, D., Grenz, P., Kenworthy, M., Laudisio, F., Lazzoni, C., Leisenring, J., Lorenzetto, A., Santhakumari, K. K. R., Ricci, D., Snik, F., Umbriaco, G., Pallauta, M. C. Vega, Viotto, V.
The combination of detection techniques enhances our ability to identify companions orbiting nearby stars. We employed high-contrast imaging to constrain mass and separation of possible companions responsible for the significant proper motion anomali
Externí odkaz:
http://arxiv.org/abs/2412.04171
Autor:
Dinis, Isaac, Wildi, François, Ségransan, Damien, Gupta, Vaibhav, Karimi, Alireza, Tallon, Michel, Bosc, Isabelle, Langlois, Maud, Loupias, Magali, Bechet, Clémentine, Thiébaut, Eric, Goulas, Charles, Ferreira, Florian, Boccaletti, Anthony, Vidal, Fabrice, Kulcsar, Caroline, Raynaud, Henri-François, Galland, Nicolas, Kasper, Markus, Milli, Julien, Mouillet, David, Schreiber, Laura, Diolaiti, Emiliano, Gratton, Raffaele, Chauvin, Gael
This study introduces a novel frequency-based data-driven controller for adaptive optics, using power spectral density for optimization while ensuring stability criteria. It addresses disturbance rejection, command amplitude constraints and system tr
Externí odkaz:
http://arxiv.org/abs/2410.05123
Autor:
Johnson, Paul A., Moisset, Jean-David, Gratton, Marianne, Baril, Émile, Plourde, Marc-Antoine, Lefebvre, Mathis, Kerleaux, Marianne, Ayers, Paul W., Cassam-Chenaï, Patrick, De Baerdemacker, Stijn, Van Neck, Dimitri
Wavefunction forms based on products of electron pairs are usually constructed as closed-shell singlets, which is insufficient when the molecular state has a nonzero spin or when the chemistry is determined by $d$- or $f-$electrons. A set of two-elec
Externí odkaz:
http://arxiv.org/abs/2410.01761
Autor:
Kong, Tania S., Gratton, Caterina, Low, Kathy A., Tan, Chin Hong, Chiarelli, Antonio M., Fletcher, Mark A., Zimmerman, Benjamin, Maclin, Edward L., Sutton, Bradley P., Gratton, Gabriele, Fabiani, Monica
Publikováno v:
Network Neuroscience, Vol 4, Iss 1, Pp 89-114 (2020)
Age-related declines in cognition are associated with widespread structural and functional brain changes, including changes in resting-state functional connectivity and gray and white matter status. Recently we have shown that the elasticity of cereb
Externí odkaz:
https://doaj.org/article/4f4af346024b44aeb1ab4fb79dffafdc
Autor:
Delorme, P., Chomez, A., Squicciarini, V., Janson, M., Flasseur, O., Schib, O., Gratton, R., Lagrange, A-M., Langlois, M., Mayer, L., Helled, R., Reïffert, S, Kiefer, F., Biller, B., Chauvin, G., Fontanive, C., Henning, Th., Kenworthy, M., Marleau, G-D., Mesa, D., Meyer, M. R., Mordasini, C., Ringqvist, S. C., Samland, M., Vigan, A., Viswanath, G.
Publikováno v:
A&A 692, A263 (2024)
Exoplanets form from circumstellar protoplanetary discs whose fundamental properties (notably their extent, composition, mass, temperature and lifetime) depend on the host star properties, such as their mass and luminosity. B-stars are among the most
Externí odkaz:
http://arxiv.org/abs/2409.18793
This study presents a two-level Deep Domain Decomposition Method (Deep-DDM) augmented with a coarse-level network for solving boundary value problems using physics-informed neural networks (PINNs). The addition of the coarse level network improves sc
Externí odkaz:
http://arxiv.org/abs/2408.12198
We revisit the standard ``telescoping sum'' argument ubiquitous in the final steps of analyzing evaluation complexity of algorithms for smooth nonconvex optimization, and obtain a refined formulation of the resulting bound as a function of the reques
Externí odkaz:
http://arxiv.org/abs/2408.09124
Autor:
Gratton, Serge, Toint, Philippe L.
A new decoder for the SIF test problems of the CUTEst collection is described, which produces problem files allowing the computation of values and derivatives of the objective function and constraints of most \cutest\ problems directly within ``nativ
Externí odkaz:
http://arxiv.org/abs/2407.07812