Zobrazeno 1 - 10
of 1 404
pro vyhledávání: '"P. Mazoyer"'
Autor:
Squicciarini, V., Mazoyer, J., Lagrange, A. -M., Chomez, A., Delorme, P., Flasseur, O., Kiefer, F.
Direct imaging (DI) campaigns are uniquely suited to probing the outer regions around young stars and looking for giant exoplanet and brown dwarf companions, hence providing key complementary information to radial velocity (RV) and transit searches f
Externí odkaz:
http://arxiv.org/abs/2411.06157
Autor:
Cantalloube, Faustine, Christiaens, Valentin, Mitjans, Carles Cantero, Cioppa, Anthony, Nasedkin, Evert, Absil, Olivier, Delorme, Philippe, Wang, Jason J., Bonse, Markus J., Daglayan, Hazan, Dahlqvist, Carl-Henrik, Guyot, Nathan, Juillard, Sandrine, Mazoyer, Johan, Samland, Matthias, Sabalbal, Mariam, Ruffio, Jean-Baptiste, Van Droogenbroeck, Marc
In this communication, we report on the results of the second phase of the Exoplanet Imaging Data Challenge started in 2019. This second phase focuses on the characterization of point sources (exoplanet signals) within multispectral high-contrast ima
Externí odkaz:
http://arxiv.org/abs/2410.17636
Autor:
Wilkinson, Christian, Charnay, Benjamin, Mazevet, Stéphane, Lagrange, Anne-Marie, Chomez, Antoine, Squicciarini, Vito, Panek, Emilie, Mazoyer, Johan
Context: A new generation of instruments (e.g., JWST, ELTs, PLATO and Ariel) is providing atmospheric spectra and mass/radius measurements for large exoplanet populations, challenging planetary models used to interpret these findings. Aims: We develo
Externí odkaz:
http://arxiv.org/abs/2410.04470
We propose a new conformity score for conformal prediction, in a general multivariate regression framework. The underlying score function is based on a covariance analysis of the residuals and the input points. We give theoretical guarantees on the p
Externí odkaz:
http://arxiv.org/abs/2409.18508
Autor:
Potier, Axel, Riggs, A J Eldorado, Ruane, Garreth, Poon, Phillip K., Noyes, Matthew, Allan, Greg W., Walter, Alexander B., Prada, Camilo Mejia, Galicher, Raphael, Mazoyer, Johan, Baudoz, Pierre
Direct imaging of exoplanets relies on complex wavefront sensing and control architectures. In addition to fast adaptive optics systems, most of the future high-contrast imaging instruments will soon be equipped with focal plane wavefront sensing alg
Externí odkaz:
http://arxiv.org/abs/2408.14286
Autor:
Gutierrez, Yann, Mazoyer, Johan, Herscovici-Schiller, Olivier, Mugnier, Laurent M., Abeloos, Baptiste, Laginja, Iva
Exoplanet imaging uses coronagraphs to block out the bright light from a star, allowing astronomers to observe the much fainter light from planets orbiting the star. However, these instruments are heavily impacted by small wavefront aberrations and r
Externí odkaz:
http://arxiv.org/abs/2407.18733
Autor:
Lewis, Briley L., Fitzgerald, Michael P., Esposito, Thomas M., Arriaga, Pauline, Lopez, Ronald, Crotts, Katie A., Duchene, Gaspard, Follette, Katherine B., Hom, Justin, Kalas, Paul, Matthews, Brenda C., Millar-Blanchaer, Maxwell, Wilner, David J., Mazoyer, Johan, Macintosh, Bruce
The 16 Myr-old A0V star HD 156623 in the Scorpius--Centaurus association hosts a high-fractional-luminosity debris disk, recently resolved in scattered light for the first time by the Gemini Planet Imager (GPI) in polarized intensity. We present new
Externí odkaz:
http://arxiv.org/abs/2407.15986
Autor:
Mazoyer, Johan, Goulas, Charles, Vidal, Fabrice, Dinis, Isaac Bernardino, Milli, Julien, Tallon, Michel, Galicher, Raphaël, Absil, Oliver, Béchet, Clémentine, Boccaletti, Anthony, Ferreira, Florian, Langlois, Maud, Martinez, Patrice, Mugnier, Laurent, N'diaye, Mamadou, de Xivry, Gilles Orban, Potier, Axel, Tallon-Bosc, Isabelle, Vigan, Arthur
SAXO+ is a planned enhancement of the existing SAXO, the VLT/ SPHERE adaptive optics system, deployed on ESO's Very Large Telescope. This upgrade is designed to significantly enhance the instrument's capacity to detect and analyze young Jupiter-like
Externí odkaz:
http://arxiv.org/abs/2406.18424
Autor:
Gutierrez, Yann, Mazoyer, Johan, Mugnier, Laurent M., Herscovici-Schiller, Olivier, Abeloos, Baptiste
Optical aberrations prevent telescopes from reaching their theoretical diffraction limit. Once estimated, these aberrations can be compensated for using deformable mirrors in a closed loop. Focal plane wavefront sensing enables the estimation of the
Externí odkaz:
http://arxiv.org/abs/2406.18143
Autor:
Goulas, Charles, Galicher, Raphaël, Vidal, Fabrice, Mazoyer, Johan, Ferreira, Florian, Sevin, Arnaud, Boccaletti, Anthony, Gendron, Eric, Béchet, Clémentine, Tallon, Michel, Langlois, Maud, Kulcsár, Caroline, Raynaud, Henri-François, Galland, Nicolas, Schreiber, Laura, Dinis, Isaac Bernardino, Wildi, François, Chauvin, Gaël, Milli, Julien
Publikováno v:
A&A 689, A199 (2024)
SPHERE, operating at the VLT since 2014, is currently one of the high-contrast instruments with a higher performance. Its adaptive optics system, known as SAXO, will be upgraded to SAXO+, which features the addition of a second stage of adaptive opti
Externí odkaz:
http://arxiv.org/abs/2406.17644