Zobrazeno 1 - 10
of 140
pro vyhledávání: '"Rivet, Jean‐pierre"'
Intensity interferometry is a reemerging astronomical technique for performing high angular resolution studies at visible wavelengths, benefiting immensely from the recent improvements in (single) photon detection instrumentation. Contrary to direct
Externí odkaz:
http://arxiv.org/abs/2408.08173
Autor:
Bialek, Spencer, Bertin, Emmanuel, Fabbro, Sébastien, Bouy, Hervé, Rivet, Jean-Pierre, Lai, Olivier, Cuillandre, Jean-Charles
We introduce a novel technique to mitigate the adverse effects of atmospheric turbulence on astronomical imaging. Utilizing a video-to-image neural network trained on simulated data, our method processes a sliding sequence of short-exposure ($\sim$0.
Externí odkaz:
http://arxiv.org/abs/2405.05250
Autor:
Schmider, François-Xavier, Gaulme, Patrick, Morales-Juberías, Raúl, Jackiewicz, Jason, Gonçalves, Ivan, Guillot, Tristan, Simon, Amy A., Wong, Michael H., Underwood, Thomas, Voelz, David, Sanchez, Cristo, DeColibus, Riley, Kovac, Sarah A., Sellers, Sean, Gilliam, Doug, Boumier, Patrick, Appourchaux, Thierry, Dejonghe, Julien, Rivet, Jean Pierre, Markham, Steve, Howard, Saburo, Abe, Lyu, Mekarnia, Djamel, Ikoma, Masahiro, Hanayama, Hidekazu, Sato, Bun'ei, Kunitomo, Masanobu, Izumiura, Hideyuki
Publikováno v:
Planet. Sci. J. 5 100 (2024)
We present three-dimensional (3D) maps of Jupiter's atmospheric circulation at cloud-top level from Doppler-imaging data obtained in the visible domain with JIVE, the second node of the JOVIAL network, which is mounted on the Dunn Solar Telescope at
Externí odkaz:
http://arxiv.org/abs/2312.16888
Autor:
Lai, Olivier, Chun, Mark, Kuiper, Stefan, Doelman, Niek, Carbillet, Marcel, N'Diaye, Mamadou, Martinache, Frantz, Abe, Lyu, Rivet, Jean-Pierre, Schmidt, Dirk
Adaptive optics is a technique mostly used on large telescopes. It turns out to be challenging for smaller telescopes (0.5~2m) due to the small isoplanatic angle, small subapertures and high correction speeds needed at visible wavelengths, requiring
Externí odkaz:
http://arxiv.org/abs/2310.07495
Autor:
Matthews, Nolan, Rivet, Jean-Pierre, Vernet, David, Hugbart, Mathilde, Labeyrie, Guillaume, Kaiser, Robin, Chabé, Julien, Courde, Clément, Lai, Olivier, Vakili, Farrokh, Garde, Olivier, Guerin, William
We report on observations of the extended environment of the bright Be star $\gamma$-Cas performed using intensity interferometry measurements within its H$\alpha$ emission line. These observations were performed using a modified version of the I2C i
Externí odkaz:
http://arxiv.org/abs/2301.04878
Autor:
Lassègues, Pierre, Biscassi, Mateus Antônio Fernandes, Morisse, Martial, Cidrim, André, Matthews, Nolan, Labeyrie, Guillaume, Rivet, Jean-Pierre, Vakili, Farrokh, Kaiser, Robin, Guerin, William, Bachelard, Romain, Hugbart, Mathilde
The Siegert relation relates field and intensity temporal correlations. After a historical review of the Siegert relation and the Hanbury Brown and Twiss effect, we discuss the validity of this relation in two different domains. We first show that th
Externí odkaz:
http://arxiv.org/abs/2209.06480
Autor:
Matthews, Nolan, Rivet, Jean-Pierre, Hugbart, Mathilde, Labeyrie, Guillaume, Kaiser, Robin, Lai, Olivier, Vakili, Farrokh, Vernet, David, Chabé, Julien, Courde, Clémont, Schuhler, Nicolas, Bourget, Pierre, Guerin, William
Publikováno v:
Proc. SPIE 12183, Optical and Infrared Interferometry and Imaging VII, 12183G (August 2022)
We present the current status of the I2C stellar intensity interferometer used towards high angular resolution observations of stars in visible wavelengths. In these proceedings, we present recent technical improvements to the instrument, and share r
Externí odkaz:
http://arxiv.org/abs/2209.02477
Autor:
de Almeida, E. S. G., Hugbart, Mathilde, de Souza, Armando Domiciano, Rivet, Jean-Pierre, Vakili, Farrokh, Siciak, Antonin, Labeyrie, Guillaume, Garde, Olivier, Matthews, Nolan, Lai, Olivier, Vernet, David, Kaiser, Robin, Guerin, William
In this paper we report on spatial intensity interferometry measurements within the H$\alpha$ line on two stars: the Luminous Blue Variable supergiant \PCygni\,and the late-type B supergiant Rigel. The experimental setup was upgraded to allow simulta
Externí odkaz:
http://arxiv.org/abs/2204.00372
Autor:
Gori, Pierre-Marie, Vakili, Farrokh, Rivet, Jean-Pierre, Guerin, William, Hugbart, Mathilde, Chiavassa, Andrea, Vakili, Adrien, Kaiser, Robin, Labeyrie, Guillaume
We propose a new approach, based on the Hanbury Brown and Twiss intensity interferometry, to transform a Cherenkov telescope to its equivalent optical telescope. We show that, based on the use of photonics components borrowed from quantum-optical app
Externí odkaz:
http://arxiv.org/abs/2105.07072
Autor:
Devogèle, Maxime, Ferrais, Marin, Jehin, Emmanuel, Moskovitz, Nicholas, Skiff, Brian A., Levine, Stephen E., Gustafsson, Annika, Farnocchia, Davide, Micheli, Marco, Snodgrass, Colin, Borisov, Galin, Manfroid, Jean, Moulane, Youssef, Benkhaldoun, Zouhair, Burdanov, Artem, Pozuelos, Francisco J., Gillon, Michael, de Wit, Julien, Green, Simon F., Bendjoya, Philippe, Rivet, Jean-Pierre, Abe, Luy, Vernet, David, Chandler, Colin Orion, Trujillo, Chadwick A.
In December 2018, the main-belt asteroid (6478)~Gault was reported to display activity. Gault is an asteroid belonging to the Phocaea dynamical family and was not previously known to be active, nor was any other member of the Phocaea family. In this
Externí odkaz:
http://arxiv.org/abs/2104.11177