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104 results on '"Madec, Pierre-Yves"'

1. PCS -- A Roadmap for Exoearth Imaging with the ELT

Author

Kasper, Markus, Urra, Nelly Cerpa, Pathak, Prashant, Bonse, Markus, Nousiainen, Jalo, Engler, Byron, Heritier, Cédric Taïssir, Kammerer, Jens, Leveratto, Serban, Rajani, Chang, Bristow, Paul, Louarn, Miska Le, Madec, Pierre-Yves, Ströbele, Stefan, Verinaud, Christophe, Glauser, Adrian, Quanz, Sascha P., Helin, Tapio, Keller, Christoph, Snik, Frans, Boccaletti, Anthony, Chauvin, Gaël, Mouillet, David, Kulcsár, Caroline, and Raynaud, Henri-François

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Planetary Camera and Spectrograph (PCS) for the Extremely Large Telescope (ELT) will be dedicated to detecting and characterising nearby exoplanets with sizes from sub-Neptune to Earth-size in the neighbourhood of the Sun. This goal is achieved by a combination of eXtreme Adaptive Optics (XAO), coronagraphy and spectroscopy. PCS will allow us not only to take images, but also to look for biosignatures such as molecular oxygen in the exoplanets' atmospheres. This article describes the PCS primary science goals, the instrument concept and the research and development activities that will be carried out over the coming years., Comment: 6 pages, 6 figures

Published
2021
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2. Reconstruction of the ground-layer adaptive-optics point spread function for MUSE Wide Field Mode observations

Author

Fusco, Thierry, Bacon, R., Kamann, S., Conseil, S., Neichel, Benoit, Correia, Carlos, Beltramo-Martin, Olivier, Vernet, Joel, Kolb, Johann, and Madec, Pierre-Yves

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Here we describe a simple, efficient, and most importantly fully operational point-spread-function(PSF)-reconstruction approach for laser-assisted ground layer adaptive optics (GLAO) in the frame of the Multi Unit Spectroscopic Explorer (MUSE) Wide Field Mode. Based on clear astrophysical requirements derived by the MUSE team and using the functionality of the current ESO Adaptive Optics Facility we aim to develop an operational PSF-reconstruction (PSFR) algorithm and test it both in simulations and using on-sky data. The PSFR approach is based on a Fourier description of the GLAO correction to which the specific instrumental effects of MUSE Wide Field Mode (pixel size, internal aberrations, etc.) have been added. It was first thoroughly validated with full end-to-end simulations. Sensitivity to the main atmospheric and AO system parameters was analysed and the code was re-optimised to account for the sensitivity found. Finally, the optimised algorithm was tested and commissioned using more than one year of on-sky MUSE data. We demonstrate with an on-sky data analysis that our algorithm meets all the requirements imposed by the MUSE scientists, namely an accuracy better than a few percent on the critical PSF parameters including full width at half maximum and global PSF shape through the kurtosis parameter of a Moffat function. The PSFR algorithm is publicly available and is used routinely to assess the MUSE image quality for each observation. It can be included in any post-processing activity which requires knowledge of the PSF., Comment: To be published in A&1, 14 pages, 17 figures

Published
2020
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3. A probabilistic approach to large time behaviour of viscosity solutions of parabolic equations with Neumann boundary conditions

Author

Hu, Ying and Madec, Pierre-Yves

Subjects
Mathematics - Probability
Abstract

This paper is devoted to the study of the large time behaviour of viscosity solutions of parabolic equations with Neumann boundary conditions. This work is the sequel of [13] in which a probabilistic method was developped to show that the solution of a parabolic semilinear PDE behaves like a linear term $\lambda T$ shifted with a function $v$, where $(v,\lambda)$ is the solution of the ergodic PDE associated to the parabolic PDE. We adapt this method in finite dimension by a penalization method in order to be able to apply an important basic coupling estimate result and with the help of a regularization procedure in order to avoid the lack of regularity of the coefficients in finite dimension. The advantage of our method is that it gives an explicit rate of convergence.

Published
2015

4. A probabilistic approach to large time behaviour of mild solutions of Hamilton-Jacobi-Bellman equations in infinite dimension

Author

Hu, Ying, Madec, Pierre-Yves, and Richou, Adrien

Subjects
Mathematics - Probability
Abstract

We study the large time behaviour of mild solutions of HJB equations in infinite dimension by a purely probabilistic approach. For that purpose, we show that the solution of a BSDE in finite horizon $T$ taken at initial time behaves like a linear term in $T$ shifted with the solution of the associated EBSDE taken at initial time. Moreover we give an explicit speed of convergence, which seems to appear very rarely in literature.

Published
2014

5. Ergodic BSDEs and related PDEs with Neumann boundary conditions under weak dissipative assumptions

Author

Madec, Pierre-Yves

Subjects
Mathematics - Probability
Abstract

We study a class of ergodic BSDEs related to PDEs with Neumann boundary conditions. The randomness of the drift is given by a forward process under weakly dissipative assumptions with an invertible and bounded diffusion matrix. Furthermore, this forward process is reflected in a convex subset of $\R^d$ not necessary bounded. We study the link of such EBSDEs with PDEs and we apply our results to an ergodic optimal control problem.

Published
2013

10. Ground Layer Adaptive Optics Point Spread Function reconstruction for MUSE Wide Field mode observations

Author

Fusco, Thierry, Bacon, Roland, Kamann, Sebastian, Conseil, S., Neichel, Benoit, Correia, Carlos, Beltramo-Martin, Olivier, Vernet, Joel, Kolb, Johann, Madec, Pierre-Yves, DOTA, ONERA, Université Paris Saclay (COmUE) [Châtillon], ONERA-Université Paris Saclay (COmUE), Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Astrophysics Research Institute [Liverpool] (ARI), Liverpool John Moores University (LJMU), Gemini Observatory [Southern Operations Center], Association of Universities for Research in Astronomy (AURA), Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), and European Southern Observatory (ESO)

Subjects
[PHYS]Physics [physics], [SPI]Engineering Sciences [physics]
Abstract

International audience; Context. This paper describes a simple, efficient and most importantly fully operational Point Spread Function (PSF) reconstruction approach for Laser assisted Ground Layer Adaptive Optics (GLAO) in the frame of the MUSE Wide Field Mode. Aims. Based on clear astrophysical requirements derived by the MUSE team and using the current ESO Adaptive Optics Facility functionalities an operational PSF Reconstruction (PSFR) algorithm has been developed and tested in simulations and using on-sky data. Methods. The PSFR approach is based on a Fourier description of the GLAO correction on which the specific instrumental effects of MUSE Wide Field Mode (pixel size, internal aberrations ...) have been added. It has been first thorough validated with full end-to-end simulations. Sensitivity to the main atmospheric and AO system parameters has been analyzed and the code has been re-optimised to account for this analysis. Finally the optimized algorithm has been tested and commissioned using more than one year of on-sky MUSE data Results. We demonstrate with on-sky data analysis that our algorithm meets all the requirements imposed by the MUSE scientists: an accuracy better than a few percent on the critical PSF parameters including Full Width Half Maximum and global PSF shape through the kurtosis parameter of a Moffat function. Conclusions. The PSFR algorithm is publicly available and is used routinely to assess the MUSE image quality for each observation and can be included in any post processing activity which requires a knowledge of the PSF.

Published
2020

12. Optimization of a predictive controller for closed-loop adaptive optics

Author

Dessenne, Caroline, Madec, Pierre-Yves, and Rousset, Gerard

Subjects
Optics, Adaptive -- Equipment and supplies, Transfer functions -- Usage, Atmospheric turbulence -- Research, Astronomy, Physics
Abstract

For closed-loop adaptive optics systems limited by time delay and measurement noise, we demonstrate that the ideal rejection transfer function is proportional to the frequency signal-to-noise ratio of the wave-front input. We describe a new modal linear predictive controller that approaches this ideal transfer function. Its parameters are optimized by minimization of the residual wave-front error with a modified recursive least-squares algorithm. The optimization can be performed with closed-loop data in the case of evolving turbulent conditions. We present numerical simulations to show the significant improvements brought by the predictor.

Published
1998

14. Raman-scattered laser guide-star photons to monitor the scatter of astronomical telescope mirrors

Author

Vogt, Frédéric P. A., primary, Luis Álvarez, José, additional, Bonaccini Calia, Domenico, additional, Hackenberg, Wolfgang, additional, Bourget, Pierre, additional, Aranda, Ivan, additional, Bellhouse, Callum, additional, Blanchard, Israel, additional, Cerda, Susana, additional, Cid, Claudia, additional, Comin, Mauro, additional, Espinoza Contreras, Marcela, additional, Hau, George, additional, Hibon, Pascale, additional, Holzlöhner, Ronald, additional, Jaffé, Yara L., additional, Kolb, Johann, additional, Kuntschner, Harald, additional, Madec, Pierre-Yves, additional, Mieske, Steffen, additional, Milli, Julien, additional, Opitom, Cyrielle, additional, Parraguez, Diego, additional, Romero, Cristian, additional, Selman, Fernando, additional, Schmidtobreick, Linda, additional, Smoker, Jonathan, additional, Vera Urrutia, Sergio, additional, and Zins, Gerard, additional

Published
2018
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15. The Adaptive Optics Facility: Commissioning Progress and Results

Author

Arsenault, Robin, Madec, Pierre-Yves, Vernet, Elise, Hackenberg, Wolfgang, La Penna, Paolo, Paufique, Jérome, Kuntschner, Harald, Pirard, Jean-Francois, Kolb, Johann, and Hubin, Norbert

Abstract

All the Adaptive Optics Facility (AOF) subsystems are now in Paranal and the project team is working on commissioning activities on Unit Telescope 4 (UT4) of the Very Large Telescope. Excellent progress has been made; the new secondary mirror unit, the Deformable Secondary Mirror (DSM), was installed in October 2016 and UT4 is now operating routinely with the DSM in non-adaptive optics mode. The other modules of the AOF, the Ground Atmospheric Layer Adaptive optiCs for Spectroscopic Imaging (GALACSI), the 4 Laser Guide Star Facility (4LGSF) and the GRound-layer Adaptive optics Assisted by Lasers (GRAAL), have been installed and are being qualified. The coupling with the High Acuity Wide field K-band Imager (HAWK-I) and the Multi Unit Spectroscopic Explorer (MUSE) has been tested and all elements are functional and ready to proceed with their full commissioning. The goal for the AOF is to complete GALACSI wide-field mode technical commissioning by the end of summer 2017 and the GRAAL ground-layer adaptive optics mode by the end of the year., Published in The Messenger vol. 168, pp. 8-14, June 2017.

Published
2017
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16. Analysis of AO modeling for pseudo-synthetic interaction matrix at the LBT

Author

Esposito, Simone, primary, Pinna, Enrico, primary, Agapito, Guido, primary, Puglisi, Alfio T., primary, Briguglio, Runa, primary, Fusco, Thierry, primary, Neichel, Benoit, primary, Sauvage, Jean-François, primary, Oberti, Sylvain, primary, Kolb, Johann, primary, Madec, Pierre-Yves, primary, Quirós-Pacheco, Fernando, primary, Correia, Carlos M., primary, and Heritier, Cedric, primary

Published
2018
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18. Adaptive optics at the ESO ELT

Author

Vernet, Elise, primary, Biancat-Marchet, Fabio, primary, Madec, Pierre-Yves, primary, Esselborn, Michael, primary, Marchetti, Enrico, primary, Paufique, Jérôme, primary, Le Louarn, Miska, primary, Oberti, Sylvain, primary, Stroebele, Stefan, primary, Dimmler, Martin, primary, Kornweibel, Nick, primary, Mueller, Michael, primary, Pettazzi, Lorenzo, primary, Sedghi, Babak, primary, Spyromilio, Jason, primary, Vérinaud, Christophe, primary, and Bonnet, Henri M., primary

Published
2018
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19. The AO in AOF

Author

Oberti, Sylvain, primary, Kolb, Johann, primary, Madec, Pierre-Yves, primary, Le Louarn, Miska, primary, Pettazzi, Lorenzo, primary, Guesalaga, Andrés, primary, Donaldson, Robert H., primary, Soenke, Christian, primary, Jeram, Bogdan, primary, Kiekebusch, Mario, primary, Argomedo, Javier, primary, Paufique, Jérôme, primary, La Penna, Paolo, primary, Arsenault, Robin, primary, Hubin, Norbert, primary, Haguenauer, Pierre, primary, Vernet, Joël, primary, and Suarez Valles, Marcos, primary

Published
2018
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21. Control software for the AO modules of the AOF project

Author

Kiekebusch, Mario J., primary, Argomedo, Javier, primary, Zins, Gérard, primary, Baksai, Pedro, primary, Duhoux, Philippe, primary, Urrutia, Josefina, primary, Stroebele, Stefan, primary, Soenke, Christian, primary, La Penna, Paolo, primary, Paufique, Jérôme, primary, Kolb, Johann, primary, Madec, Pierre-Yves, primary, Comin, Mauro, primary, Calderone, Giorgio, primary, Arsenault, Robin, primary, and Oberti, Sylvain, primary

Published
2018
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22. Detection and Implications of Laser-Induced Raman Scattering at Astronomical Observatories

Author

Vogt, Frédéric P. A., primary, Bonaccini Calia, Domenico, additional, Hackenberg, Wolfgang, additional, Opitom, Cyrielle, additional, Comin, Mauro, additional, Schmidtobreik, Linda, additional, Smoker, Jonathan, additional, Blanchard, Israel, additional, Espinoza Contreras, Marcela, additional, Aranda, Ivan, additional, Milli, Julien, additional, Jaffe, Yara L., additional, Selman, Fernando, additional, Kolb, Johann, additional, Hibon, Pascale, additional, Kuntschner, Harald, additional, and Madec, Pierre-Yves, additional

Published
2017
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23. AOF – first on-sky performance of the GALACSI GLAO mode (or how to close 10 loops in less than 5 minutes)

Author

Kolb, Johann, primary, Madec, Pierre-Yves, additional, Arsenault, Robin, additional, Oberti, Sylvain, additional, Paufique, Jerome, additional, La Penna, Paolo, additional, Ströbele, Stefan, additional, Donaldson, Robert, additional, Soenke, Christian, additional, Suárez Valles, Marcos, additional, Kiekebusch, Mario, additional, Argomedo, Javier, additional, Le Louarn, Miska, additional, Vernet, Elise, additional, Haguenauer, Pierre, additional, Duhoux, Philippe, additional, Aller-Carpentier, Emmanuel, additional, Valenzuela, Jose Javier, additional, and Guerra, Juan Carlos, additional

Published
2017
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24. Latest AO simulation results for the E-ELT

Author

Le Louarn, Miska, primary, Madec, Pierre-Yves, additional, Oberti, Sylvain, additional, Paufique, Jerome, additional, Sarazin, Marc, additional, Stroebele, Stefan, additional, and Esselborn, Michael, additional

Published
2017
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25. Overview of AO calibration strategies in the ELT context

Author

Heritier, Cédric, Taïssir, primary, Fusco, Thierry, additional, Neichel, Benoit, additional, Esposito, Simone, additional, Oberti, Sylvain, additional, Correia, Carlos, additional, Sauvage, Jean-François, additional, Bond, Charlotte, additional, Fauvarque, Olivier, additional, Pinna, Enrico, additional, Agapito, Guido, additional, Puglisi, Alfio, additional, Kolb, Johann, additional, Madec, Pierre-Yves, additional, and Bechet, Clémentine, additional

Published
2017
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26. Deformable mirrors development program at ESO

Author

Stroebele, Stefan, primary, Vernet, Elise Vernet, additional, Brinkmann, Martin Brinkmann, additional, Jakob, Gerd Jakob, additional, Lilley, Paul Lilley, additional, Casali, Mark Casali, additional, Madec, Pierre-Yves Madec, additional, and Kasper, Markus Kasper, additional

Published
2017
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27. Equations différentielles stochastiques rétrogrades ergodiques et applications aux EDP

Author

Madec, Pierre-Yves, Institut de Recherche Mathématique de Rennes (IRMAR), AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Université Rennes 1, and Ying Hu

Subjects
Comportement en temps long, [MATH.MATH-PR]Mathematics [math]/Probability [math.PR], EDSR ergodiques, Large time behaviour, Ergodic BSDE, Probabilités, PDE, EDP, Probability
Abstract

This thesis deals with the study of ergodic BSDE and their applications to the study of the large time behaviour of solutions to semilinear parabolic PDE. In a first time, we establish some existence and uniqueness results to an ergodic BSDE with Neumann boundary conditions in an unbounded convex set in a weakly dissipative environment. Then we study their link with PDE with Neumann boundary condition and we give an application to an ergodic stochastic control problem. The second part consists of two sections. In the first one, we study the large time bahaviour of mild solutions to semilinear parabolic PDE in infinite dimension by a probabilistic method. This probabilistic method relies on a Basic coupling estimate result which gives us an exponential rate of convergence of the solution toward its asymptote. Let us mention that that this asymptote is fully determined by the solution of the ergodic semilinear PDE associated to the parabolic semilinear PDE. Then, we adapt this method to the sudy of the large time behaviour of viscosity solutions of semilinear parabolic PDE with Neumann boundary condition in a convex and bounded set in finite dimension. By regularization and penalization procedures, we obtain similar results as those obtained in the mild context, especially with an exponential rate of convergence for the solution toward its asymptote.; Cette thèse s'intéresse à l'étude des EDSR ergodiques et à leurs applications à l'étude du comportement en temps long des solutions d'EDP paraboliques semi-linéaires. Dans un premier temps, nous établissons des résultats d'existence et d'unicité d'une EDSR ergodique avec conditions de Neumann au bord dans un convexe non borné et dans un environnement faiblement dissipatif. Nous étudions ensuite leur lien avec les EDP avec conditions de Neumann au bord et nous donnons un exemple d'application à un problème de contrôle optimal stochastique. La deuxième partie est constituée de deux sous-parties. Tout d'abord, nous étudions le comportement en temps long des solutions mild d'une EDP parabolique semi-linéaire en dimension infinie par des méthodes probabilistes. Cette méthode probabiliste repose sur une application d'un résultat nommé "Basic coupling estimate" qui nous permet d'obtenir une vitesse de convergence exponentielle de la solution vers sons asymptote. Au passage notons que cette asymptote est entièrement déterminée par la solution de l'EDP ergodique semi-linéaire associée à l'EDP parabolique semi-linéaire initiale. Puis, nous adaptons cette méthode à l'étude du comportement en temps long des solutions de viscosité d'une EDP parabolique semi-linéaire avec condition de Neumann au bord dans un convexe borné en dimension finie. Par des méthodes de régularisation et de pénalisation des coefficients et en utilisant un résultat de stabilité pour les EDSR, nous obtenons des résultats analogues à ceux obtenus dans le contexte mild, avec notamment une vitesse exponentielle de convergence de la solution vers son asymptote.

Published
2015

28. Ergodic backward stochastic differential equations and their applications to PDE

Author

Madec, Pierre-Yves, Institut de Recherche Mathématique de Rennes ( IRMAR ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -AGROCAMPUS OUEST-École normale supérieure - Rennes ( ENS Rennes ) -Institut National de Recherche en Informatique et en Automatique ( Inria ) -Institut National des Sciences Appliquées ( INSA ) -Université de Rennes 2 ( UR2 ), Université de Rennes ( UNIV-RENNES ) -Centre National de la Recherche Scientifique ( CNRS ), Université Rennes 1, Ying Hu, Institut de Recherche Mathématique de Rennes (IRMAR), AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-École normale supérieure - Rennes (ENS Rennes)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École normale supérieure - Rennes (ENS Rennes)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-INSTITUT AGRO Agrocampus Ouest, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Université de Rennes, and STAR, ABES

Subjects
[MATH.MATH-PR]Mathematics [math]/Probability [math.PR], Comportement en temps long, [MATH.MATH-PR] Mathematics [math]/Probability [math.PR], EDSR ergodiques, Large time behaviour, Ergodic BSDE, Probabilités, PDE, EDP, [ MATH.MATH-PR ] Mathematics [math]/Probability [math.PR], Probability
Abstract

This thesis deals with the study of ergodic BSDE and their applications to the study of the large time behaviour of solutions to semilinear parabolic PDE. In a first time, we establish some existence and uniqueness results to an ergodic BSDE with Neumann boundary conditions in an unbounded convex set in a weakly dissipative environment. Then we study their link with PDE with Neumann boundary condition and we give an application to an ergodic stochastic control problem. The second part consists of two sections. In the first one, we study the large time bahaviour of mild solutions to semilinear parabolic PDE in infinite dimension by a probabilistic method. This probabilistic method relies on a Basic coupling estimate result which gives us an exponential rate of convergence of the solution toward its asymptote. Let us mention that that this asymptote is fully determined by the solution of the ergodic semilinear PDE associated to the parabolic semilinear PDE. Then, we adapt this method to the sudy of the large time behaviour of viscosity solutions of semilinear parabolic PDE with Neumann boundary condition in a convex and bounded set in finite dimension. By regularization and penalization procedures, we obtain similar results as those obtained in the mild context, especially with an exponential rate of convergence for the solution toward its asymptote., Cette thèse s'intéresse à l'étude des EDSR ergodiques et à leurs applications à l'étude du comportement en temps long des solutions d'EDP paraboliques semi-linéaires. Dans un premier temps, nous établissons des résultats d'existence et d'unicité d'une EDSR ergodique avec conditions de Neumann au bord dans un convexe non borné et dans un environnement faiblement dissipatif. Nous étudions ensuite leur lien avec les EDP avec conditions de Neumann au bord et nous donnons un exemple d'application à un problème de contrôle optimal stochastique. La deuxième partie est constituée de deux sous-parties. Tout d'abord, nous étudions le comportement en temps long des solutions mild d'une EDP parabolique semi-linéaire en dimension infinie par des méthodes probabilistes. Cette méthode probabiliste repose sur une application d'un résultat nommé "Basic coupling estimate" qui nous permet d'obtenir une vitesse de convergence exponentielle de la solution vers sons asymptote. Au passage notons que cette asymptote est entièrement déterminée par la solution de l'EDP ergodique semi-linéaire associée à l'EDP parabolique semi-linéaire initiale. Puis, nous adaptons cette méthode à l'étude du comportement en temps long des solutions de viscosité d'une EDP parabolique semi-linéaire avec condition de Neumann au bord dans un convexe borné en dimension finie. Par des méthodes de régularisation et de pénalisation des coefficients et en utilisant un résultat de stabilité pour les EDSR, nous obtenons des résultats analogues à ceux obtenus dans le contexte mild, avec notamment une vitesse exponentielle de convergence de la solution vers son asymptote.

Published
2015

29. Performance updates of HAWK-I and preparation for the commissioning of the system GRAAL+HAWK-I

Author

Hibon, Pascale, additional, Paufique, Jerome, additional, Kuntschner, Harald, additional, Dobrzycka, Danuta, additional, Le Louarn, Miska, additional, Valenti, Elena, additional, Neeser, Mark, additional, Pompei, Emanuela, additional, Arsenault, Robin, additional, Siebenmorgen, Ralf, additional, Madec, Pierre-Yves, additional, Petr-Gotzens, Monika, additional, La Fuente, Carlos, additional, Urrutia, Josefina, additional, Valenzuela, Javier, additional, Castillo, Roberto, additional, Baksai, Pedro, additional, Garcia Dabo, Cesar Enrique, additional, Jost, Andreas, additional, Argomedo, Javier, additional, Kolb, Johann, additional, Kiekebusch, Mario, additional, Hubin, Norbert, additional, Duhoux, Philippe, additional, Conzelmann, Ralf Dieter, additional, Donaldson, Robert, additional, Tordo, Sebastien, additional, and Huber, Stefan, additional

Published
2016
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31. Laboratory results of the AOF system testing

Author

Kolb, Johann, additional, Madec, Pierre-Yves, additional, Arsenault, Robin, additional, Oberti, Sylvain, additional, Paufique, Jérôme, additional, La Penna, Paolo, additional, Ströbele, Stefan, additional, Donaldson, Robert, additional, Soenke, Christian, additional, Suárez Valles, Marcos, additional, Kiekebusch, Mario, additional, Argomedo, Javier, additional, Le Louarn, Miska, additional, Vernet, Elise, additional, Haguenauer, Pierre, additional, Duhoux, Philippe, additional, Aller-Carpentier, Emmanuel, additional, Valenzuela, Jose Javier, additional, and Guerra, Juan Carlos, additional

Published
2016
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32. GRAAL on the mountaintop

Author

Paufique, Jérôme, additional, Madec, Pierre-Yves, additional, Kolb, Johann, additional, Kuntschner, Harald, additional, Argomedo, Javier, additional, Kiekebusch, Mario J., additional, Donaldson, Robert H., additional, Arsenault, Robin, additional, Siebenmorgen, Ralf, additional, Soenke, Christian, additional, Tordo, Sebastien, additional, Conzelmann, Ralf D., additional, Jost, Andreas, additional, Reyes-Moreno, Javier, additional, Downing, Mark, additional, Hibon, Pascale, additional, Valenzuela, Jose Javier, additional, and Haguenauer, Pierre, additional

Published
2016
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35. Deformable mirrors development program at ESO

Author

Stroebele, Stefan, additional, Vernet, Elise, additional, Brinkmann, Martin, additional, Jakob, Gerd, additional, Lilley, Paul, additional, Casali, Mark, additional, Madec, Pierre-Yves, additional, and Kasper, Markus, additional

Published
2016
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36. AOF LTAO mode: reconstruction strategy and first test results

Author

Oberti, Sylvain, additional, Kolb, Johann, additional, Le Louarn, Miska, additional, La Penna, Paolo, additional, Madec, Pierre-Yves, additional, Neichel, Benoit, additional, Sauvage, Jean-François, additional, Fusco, Thierry, additional, Donaldson, Robert, additional, Soenke, Christian, additional, Suárez Valles, Marcos, additional, and Arsenault, Robin, additional

Published
2016
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40. The deformable secondary mirror of VLT: final electro-mechanical and optical acceptance test results

Author

Briguglio, Runa, additional, Biasi, Roberto, additional, Xompero, Marco, additional, Riccardi, Armando, additional, Andrighettoni, Mario, additional, Pescoller, Dietrich, additional, Angerer, Gerald, additional, Gallieni, Daniele, additional, Vernet, Elise, additional, Kolb, Johann, additional, Arsenault, Robin, additional, and Madec, Pierre-Yves, additional

Published
2014
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42. ESO adaptive optics facility progress and first laboratory test results

Author

Arsenault, Robin, additional, Madec, Pierre-Yves, additional, Paufique, Jérome, additional, La Penna, Paolo, additional, Stroebele, Stefan, additional, Vernet, Elise, additional, Pirard, Jean-Francois, additional, Hackenberg, Wolfgang, additional, Kuntschner, Harald, additional, Kolb, Johann, additional, Muller, Nicolas, additional, Garcia-Rissmann, Aurea, additional, Le Louarn, Miska, additional, Amico, Paola, additional, Hubin, Norbert, additional, Lizon, Jean-Louis, additional, Ridings, Rob, additional, Haguenauer, Pierre, additional, Abad, Jose A., additional, Fischer, Gerhard, additional, Heinz, Volker, additional, Kiekebusch, Mario, additional, Argomedo, Javier, additional, Conzelmann, Ralf, additional, Tordo, Sebastien, additional, Donaldson, Rob, additional, Soenke, Christian, additional, Duhoux, Philippe, additional, Fedrigo, Enrico, additional, Delabre, Bernard, additional, Jost, Andrea, additional, Duchateau, Michel, additional, Downing, Mark, additional, Reyes Moreno, Javier, additional, Manescau, Antonio, additional, Bonaccini Calia, Domenico, additional, Quattri, Marco, additional, Dupuy, Christophe, additional, Guidolin, Ivan M., additional, Comin, Mauro, additional, Guzman, Ronald, additional, Buzzoni, Bernard, additional, Quentin, Jutta, additional, Lewis, Steffan, additional, Jolley, Paul, additional, Kraus, Max, additional, Pfrommer, Thomas, additional, Biasi, Roberto, additional, Gallieni, Daniele, additional, Stuik, Remko, additional, Kaenders, Wilhelm, additional, Ernstberger, Bernhard, additional, and Friedenauer, Axel, additional

Published
2014
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43. The ERIS adaptive optics system

Author

Marchetti, Enrico, additional, Fedrigo, Enrico, additional, Le Louarn, Miska, additional, Madec, Pierre-Yves, additional, Soenke, Christian, additional, Brast, Roland, additional, Conzelmann, Ralf, additional, Delabre, Bernard, additional, Duchateau, Michel, additional, Frank, Christoph, additional, Klein, Barbara, additional, Amico, Paola, additional, Hubin, Norbert, additional, Esposito, Simone, additional, Antichi, Jacopo, additional, Carbonaro, Luca, additional, Puglisi, Alfio, additional, Quirós-Pacheco, Fernando, additional, Riccardi, Armando, additional, and Xompero, Marco, additional

Published
2014
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44. Design, fabrication, integration and commissioning of an upgraded guiding probe for the VLT unit telescope 4

Author

Frank, Christoph, additional, Hammersley, Peter, additional, Buzzoni, Bernard, additional, Manescau, Antonio, additional, Arsenault, Robin, additional, Madec, Pierre-Yves, additional, Birkmann, Martin, additional, Mueller, Michael, additional, Salgado, Fernando, additional, Guisard, Stephane, additional, and Kroedel, Matthias, additional

Published
2014
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46. The AO in AOF

Author

Close, Laird M., Schreiber, Laura, Schmidt, Dirk, Oberti, Sylvain, Kolb, Johann, Madec, Pierre-Yves, Haguenauer, Pierre, Le Louarn, Miska, Pettazzi, Lorenzo, Guesalaga, Andres, Donaldson, Robert, Soenke, Christian, Jeram, Bogdan, Suárez Valles, Marcos, Kiekebusch, Mario, Argomedo, Javier, La Penna, Paolo, Paufique, Jerome, Arsenault, Robin, Hubin, Norbert, and Vernet, Joel

Published
2018
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48. NAOS, the first AO System of the VLT

Author

Fusco, Thierry, Rousset, Gérard, Lacombe, François, Lagrange, Anne-Marie, Gendron, Éric, Puget, Pascal, Arsenault, Robin, Charton, J., Hubin, Norbert N., Kern, P., Gigan, Pierre, Madec, Pierre-Yves, Mouillet, David, Rabaud, Didier, Rabou, Patrick, Stadler, Eric, Zins, Gerard, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Astronomie du LESIA, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

Published
2002

49. ESO adaptive optics facility progress report

Author

Arsenault, Robin, primary, Madec, Pierre-Yves, additional, Paufique, Jerome, additional, La Penna, Paolo, additional, Stroebele, Stefan, additional, Vernet, Elise, additional, Pirard, Jean-Francois, additional, Hackenberg, Wolfgang, additional, Kuntschner, Harald, additional, Jochum, Lieselotte, additional, Kolb, Johann, additional, Muller, Nicolas, additional, Le Louarn, Miska, additional, Amico, Paola, additional, Hubin, Norbert, additional, Lizon, Jean-Louis, additional, Ridings, Rob, additional, Abad, Jose A., additional, Fischer, Gert, additional, Heinz, Volker, additional, Kiekebusch, Mario, additional, Argomedo, Javier, additional, Conzelmann, Ralf, additional, Tordo, Sebastien, additional, Donaldson, Robert, additional, Soenke, Christian, additional, Duhoux, Philippe, additional, Fedrigo, Enrico, additional, Delabre, Bernard, additional, Jost, Andreas, additional, Duchateau, Michel, additional, Downing, Mark, additional, Moreno, Javier R., additional, Dorn, Reinhold, additional, Manescau, Antonio, additional, Bonaccini Calia, Domenico, additional, Quattri, Marco, additional, Dupuy, Christophe, additional, Guidolin, Ivan M., additional, Comin, Mauro, additional, Guzman, Ronald, additional, Buzzoni, Bernard, additional, Quentin, Jutta, additional, Lewis, Steffan, additional, Jolley, Paul, additional, Kraus, Maximilian, additional, Pfrommer, Thomas, additional, Biasi, Roberto, additional, Gallieni, Daniele, additional, Bechet, Clementine, additional, and Stuik, Remko, additional

Published
2012
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50. ERIS adaptive optics system design

Author

Marchetti, Enrico, primary, Le Louarn, Miska, additional, Soenke, Christian, additional, Fedrigo, Enrico, additional, Madec, Pierre-Yves, additional, and Hubin, Norbert, additional

Published
2012
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