Zobrazeno 1 - 10
of 9 432
pro vyhledávání: '"Léger, P"'
Autor:
Lizzana, Manon, Malbet, Fabien, Kern, Pierre, Pancher, Fabrice, Soler, Sébastien, Lepine, Thierry, Leger, Alain
Publikováno v:
ICSO, Oct 2024, Antibes, France
High precision differential Astrometry is the branch of astronomy that evaluates the relative position, distance and motion of celestial objects with respect to the stars present in the field of view. A mission called Theia has been submitted in 2022
Externí odkaz:
http://arxiv.org/abs/2411.19524
Autor:
Ampatzoglou, Ioakeim, Léger, Tristan
In this article we identify a sharp ill-posedness/well-posedness threshold for kinetic wave equations (KWE) derived from quasilinear Schr\"{o}dinger models. We show well-posedness using a collisional averaging estimate proved in our earlier work \cit
Externí odkaz:
http://arxiv.org/abs/2411.12868
Autor:
Malbet, Fabien, Mamon, Gary A., Labadie, Lucas, Sozzetti, Alessandro, Lizzana, Manon, Lépine, Thierry, Léger, Alain, Lagage, Pierre-Olivier
Publikováno v:
International Conference on Space Optics ICSO'2024, Philippe KUBIK; Fr{\'e}d{\'e}ric BERNARD; Nikos KARAFOLAS; Kyriaki MINOGLOU, Oct 2024, Antibes (06), France
Astrometry is one of the oldest branches of astronomy which measures the position, the proper motion and parallax of celestial objects. Following the Hipparcos and Gaia missions that have measured several billions of them using global astrometry, we
Externí odkaz:
http://arxiv.org/abs/2410.23019
Autor:
Pancher, Fabrice, Soler, Sebastien, Malbet, Fabien, Lizzana, Manon, Kern, Pierre, Lepine, Thierry, Leger, Alain
High precision differential astrometry assesses the positions, distances, and motions of celestial objects in relation to the stars. The focal plane of such space telescope must be calibrated with a precision down to the level of 1e-5 pixel in order
Externí odkaz:
http://arxiv.org/abs/2410.21911
Autor:
McNealis, Vanessa, Léger, Christian
This paper introduces smoothed pseudo-population bootstrap methods for the purposes of variance estimation and the construction of confidence intervals for finite population quantiles. In an i.i.d. context, it has been shown that resampling from a sm
Externí odkaz:
http://arxiv.org/abs/2410.07996
Nonnegative cross-curvature (NNCC) is a geometric property of a cost function defined on a product space that originates in optimal transportation and the Ma-Trudinger-Wang theory. Motivated by applications in optimization, gradient flows and mechani
Externí odkaz:
http://arxiv.org/abs/2409.18112
Autor:
Malbet, F., Lizzana, M., Pancher, F., Soler, S., Léger, A., Lépine, T., Mamon, G. A., Sozzetti, A., Riva, A., Busonero, D., Labadie, L., Lagage, P. -O., Goullioud, R.
Publikováno v:
SPIE 13092, 130920B (2024)
With sub-microarcsecond angular accuracy, the \theia telescope will be capable of revealing the architectures of nearby exoplanetary systems down to the mass of Earth. This research addresses the challenges inherent in space astrometry missions, focu
Externí odkaz:
http://arxiv.org/abs/2408.15929
Autor:
Ampatzoglou, Ioakeim, Léger, Tristan
In this paper we construct global strong dispersive solutions to the space inhomogeneous kinetic wave equation (KWE) which propagate $L^1_{xv}$ -- moments and conserve mass, momentum and energy. We prove that they scatter, and that the wave operators
Externí odkaz:
http://arxiv.org/abs/2408.05818
Autor:
Defrère, Denis, Laugier, Romain, Martinod, Marc-Antoine, Garreau, Germain, Missiaen, Kwinten, Salman, Muhammad, Raskin, Gert, Dandumont, Colin, Ertel, Steve, Ireland, Michael J., Kraus, Stefan, Labadie, Lucas, Mazzoli, Alexandra, Medgyesi, Gyorgy, Sanny, Ahmed, Absil, Olivier, Ábráham, Peter, Berger, Jean-Philippe, Bonduelle, Myriam, Bigioli, Azzurra, Bouzerand, Emilie, Carter, Josh, Cvetojevic, Nick, Courtney-Barrer, Benjamin, Glauser, Adrian M., Gross, Simon, Haubois, Xavier, James, Noel, Joo, Andras Peter, Lagarde, Stephane, Léger, Alain, Leisenring, Jarron, Loicq, Jérôme, Martin, Guillermo, Martinache, Frantz, Mezo, Gyorgy, Morel, Sébastien, Morren, Johan, Ollivier, Marc, Robertson, Gordon, Rousseau, Hélène, Schofield, Warrick, Schuhler, Nicolas, Taras, Adam, Vandenbussche, Bart, Woillez, Julien
NOTT (formerly Hi-5) is the L'-band (3.5-4.0~microns) nulling interferometer of Asgard, an instrument suite in preparation for the VLTI visitor focus. The primary scientific objectives of NOTT include characterizing (i) young planetary systems near t
Externí odkaz:
http://arxiv.org/abs/2407.08397
Autor:
Perez, Jérémy, Léger, Corentin, Kovač, Grgur, Colas, Cédric, Molinaro, Gaia, Derex, Maxime, Oudeyer, Pierre-Yves, Moulin-Frier, Clément
As large language models (LLMs) start interacting with each other and generating an increasing amount of text online, it becomes crucial to better understand how information is transformed as it passes from one LLM to the next. While significant rese
Externí odkaz:
http://arxiv.org/abs/2407.04503