Zobrazeno 1 - 10
of 4 226
pro vyhledávání: '"A. N'Diaye"'
Autor:
Buralli, B., N'Diaye, M., Pourcelot, R., Carbillet, M., Por, E. H., Laginja, I., Canas, L., Steiger, S., Petrone, P., Nguyen, M. M., Nickson, B., Redmond, S. F., Sahoo, A., Pueyo, L., Perrin, M. D., Soummer, R.
We study a mid-order wavefront sensor (MOWFS) to address fine cophasing errors in exoplanet imaging with future large segmented aperture space telescopes. Observing Earth analogs around Sun-like stars requires contrasts down to $10^{-10}$ in visible
Externí odkaz:
http://arxiv.org/abs/2409.03411
Autor:
Marconi, A., Abreu, M., Adibekyan, V., Alberti, V., Albrecht, S., Alcaniz, J., Aliverti, M., Prieto, C. Allende, Gómez, J. D. Alvarado, Alves, C. S., Amado, P. J., Amate, M., Andersen, M. I., Antoniucci, S., Artigau, E., Bailet, C., Baker, C., Baldini, V., Balestra, A., Barnes, S. A., Baron, F., Barros, S. C. C., Bauer, S. M., Beaulieu, M., Bellido-Tirado, O., Benneke, B., Bensby, T., Bergin, E. A., Berio, P., Biazzo, K., Bigot, L., Bik, A., Birkby, J. L., Blind, N., Boebion, O., Boisse, I., Bolmont, E., Bolton, J. S., Bonaglia, M., Bonfils, X., Bonhomme, L., Borsa, F., Bouret, J. -C., Brandeker, A., Brandner, W., Broeg, C. H., Brogi, M., Brousseau, D., Brucalassi, A., Brynnel, J., Buchhave, L. A., Buscher, D. F., Cabona, L., Cabral, A., Calderone, G., Calvo-Ortega, R., Cantalloube, F., Martins, B. L. Canto, Carbonaro, L., Caujolle, Y., Chauvin, G., Chazelas, B., Cheffot, A. -L., Cheng, Y. S., Chiavassa, A., Christensen, L., Cirami, R., Cirasuolo, M., Cook, N. J., Cooke, R. J., Coretti, I., Covino, S., Cowan, N., Cresci, G., Cristiani, S., Parro, V. Cunha, Cupani, G., D'Odorico, V., Dadi, K., Leão, I. de Castro, De Cia, A., De Medeiros, J. R., Debras, F., Debus, M., Delorme, A., Demangeon, O., Derie, F., Dessauges-Zavadsky, M., Di Marcantonio, P., Di Stefano, S., Dionies, F., de Souza, A. Domiciano, Doyon, R., Dunn, J., Egner, S., Ehrenreich, D., Faria, J. P., Ferruzzi, D., Feruglio, C., Fisher, M., Fontana, A., Frank, B. S., Fuesslein, C., Fumagalli, M., Fusco, T., Fynbo, J., Gabella, O., Gaessler, W., Gallo, E., Gao, X., Genolet, L., Genoni, M., Giacobbe, P., Giro, E., Goncalves, R. S., Gonzalez, O. A., Hernández, J. I. González, Gouvret, C., Temich, F. Gracia, Haehnelt, M. G., Haniff, C., Hatzes, A., Helled, R., Hoeijmakers, H. J., Hughes, I., Huke, P., Ivanisenko, Y., Järvinen, A. S., Järvinen, S. P., Kaminski, A., Kern, J., Knoche, J., Kordt, A., Korhonen, H., Korn, A. J., Kouach, D., Kowzan, G., Kreidberg, L., Landoni, M., Lanotte, A. A., Lavail, A., Lavie, B., Lee, D., Lehmitz, M., Li, J., Li, W., Liske, J., Lovis, C., Lucatello, S., Lunney, D., MacIntosh, M. J., Madhusudhan, N., Magrini, L., Maiolino, R., Maldonado, J., Malo, L., Man, A. W. S., Marquart, T., Marques, C. M. J., Marques, E. L., Martinez, P., Martins, A., Martins, C. J. A. P., Martins, J. H. C., Maslowski, P., Mason, C. A., Mason, E., McCracken, R. A., Sousa, M. A. F. Melo e, Mergo, P., Micela, G., Milaković, D., Molliere, P., Monteiro, M. A., Montgomery, D., Mordasini, C., Morin, J., Mucciarelli, A., Murphy, M. T., N'Diaye, M., Nardetto, N., Neichel, B., Neri, N., Niedzielski, A. T., Niemczura, E., Nisini, B., Nortmann, L., Noterdaeme, P., Nunes, N. J., Oggioni, L., Olchewsky, F., Oliva, E., Onel, H., Origlia, L., Ostlin, G., Ouellette, N. N. -Q., Palle, E., Papaderos, P., Pariani, G., Pasquini, L., Castro, J. Peñate, Pepe, F., Peroux, C., Levasseur, L. Perreault, Perruchot, S., Petit, P., Pfuhl, O., Pino, L., Piqueras, J., Piskunov, N., Pollo, A., Poppenhaeger, K., Porru, M., Puschnig, J., Quirrenbach, A., Rauscher, E., Rebolo, R., Redaelli, E. M. A., Reffert, S., Reid, D. T., Reiners, A., Richter, P., Riva, M., Rivoire, S., Rodriguez-López, C., Roederer, I. U., Romano, D., Roth, M., Rousseau, S., Rowe, J., Saccardi, A., Salvadori, S., Sanna, N., Santos, N. C., Diaz, P. Santos, Sanz-Forcada, J., Sarajlic, M., Sauvage, J. -F., Savio, D., Scaudo, A, Schäfer, S., Schiavon, R. P., Schmidt, T. M., Selmi, C., Simoes, R., Simonnin, A., Sivanandam, S., Sordet, M., Sordo, R., Sortino, F., Sosnowska, D., Sousa, S. G., Spang, A., Spiga, R., Stempels, E., Stevenson, J. R. Y., Strassmeier, K. G., Mascareño, A. Suárez, Sulich, A., Sun, X., Tanvir, N. R., Tenegi-Sangines, F., Thibault, S., Thompson, S. J., Tisserand, P., Tozzi, A., Turbet, M., Veran, J. -P., Vallee, P., Vanni, I., Varas, R., Vega-Moreno, A., Venn, K. A., Verma, A., Vernet, J., Viel, M., Wade, G., Waring, C., Weber, M., Weder, J., Wehbe, B., Weingrill, J., Woche, M., Xompero, M., Zackrisson, E., Zanutta, A., Osorio, M. R. Zapatero, Zechmeister, M., Zimara, J.
The first generation of ELT instruments includes an optical-infrared high-resolution spectrograph, indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). ANDES consists of three fibre-fed spectrographs
Externí odkaz:
http://arxiv.org/abs/2407.14601
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:
Bregazzi, Alex T., Ouassou, Jabir A., Coveney, Arthur G., Stelmashenko, Nadia A., Child, Ali, N'Diaye, Alpha T., Robinson, Jason W. A., Dejene, Fasil K., Linder, Jacob, Banerjee, Niladri
Publikováno v:
Applied Physics Letters, 124 (16):162602 (2024)
In a superconductor/ferromagnet hybrid, a magnetically controlled singlet-to-triplet Cooper pair conversion can modulate the superconducting critical temperature. In these triplet superconducting spin valves, such control usually requires inhomogeneo
Externí odkaz:
http://arxiv.org/abs/2404.12950
Autor:
Taras, Adam K., Robertson, J. Gordon, Allouche, Fatme, Courtney-Barrer, Benjamin, Carter, Josh, Crous, Fred, Cvetojevic, Nick, Ireland, Michael, Lagarde, Stephane, Martinache, Frantz, McGinness, Grace, N'Diaye, Mamadou, Robbe-Dubois, Sylvie, Tuthill, Peter
Publikováno v:
Appl. Opt. 63, D41-D49 (2024)
High angular resolution imaging is an increasingly important capability in contemporary astrophysics. Of particular relevance to emerging fields such as the characterisation of exoplanetary systems, imaging at the required spatial scales and contrast
Externí odkaz:
http://arxiv.org/abs/2403.04091
Autor:
Yanwei Cao, Zhen Wang, Se Young Park, Yakun Yuan, Xiaoran Liu, Sergey M. Nikitin, Hirofumi Akamatsu, M. Kareev, S. Middey, D. Meyers, P. Thompson, P. J. Ryan, Padraic Shafer, A. N’Diaye, E. Arenholz, Venkatraman Gopalan, Yimei Zhu, Karin M. Rabe, J. Chakhalian
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
Materials that combine metallic behaviour with stable electric polarization are scarce despite being proposed in the 1960s. Here the authors engineer a perovskite heterostructure where 2D polar metallic behavior coexists with built-in electric polari
Externí odkaz:
https://doaj.org/article/def6fe20a8d54f34955467b1c6a89851
Autor:
Leboulleux, Lucie, Cantalloube, Faustine, Foujols, Marie-Alice, Giard, Martin, Guilet, Jérôme, Knödlseder, Jürgen, Santerne, Alexandre, Todorov, Lilia, Barret, Didier, Berne, Olivier, Crida, Aurélien, Hennebelle, Patrick, Kral, Quentin, Lagadec, Eric, Malbet, Fabien, Milli, Julien, N'Diaye, Mamadou, Roques, Françoise
Publikováno v:
SF2A proceedings 2023
To keep current global warming below 1.5{\deg}C compared with the pre-industrial era, measures must be taken as quickly as possible in all spheres of society. Astronomy must also make its contribution. In this proceeding, and during the workshop to w
Externí odkaz:
http://arxiv.org/abs/2311.13625
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:
Vigan, A., Morsy, M. El, Lopez, M., Otten, G. P. P. L., Garcia, J., Costes, J., Muslimov, E., Viret, A., Charles, Y., Zins, G., Murray, G., Costille, A., Paufique, J., Seemann, U., Houllé, M., Anwand-Heerwart, H., Phillips, M., Abinanti, A., Balard, P., Baraffe, I., Benedetti, J. -A., Blanchard, P., Blanco, L., Beuzit, J. -L., Choquet, E., Cristofari, P., Desidera, S., Dohlen, K., Dorn, R., Ely, T., Fuenteseca, E., Garcia, N., Jaquet, M., Jaubert, F., Kasper, M., Merrer, J. Le, Maire, A. -L., N'Diaye, M., Pallanca, L., Popovic, D., Pourcelot, R., Reiners, A., Rochat, S., Sehim, C., Schmutzer, R., Smette, A., Tchoubaklian, N., Tomlinson, P., Soto, J. Valenzuela
A major endeavor of this decade is the direct characterization of young giant exoplanets at high spectral resolution to determine the composition of their atmosphere and infer their formation processes and evolution. Such a goal represents a major ch
Externí odkaz:
http://arxiv.org/abs/2309.12390
Autor:
N'Diaye, Mamadou, Vigan, Arthur, Engler, Byron, Kasper, Markus, Leveratto, Serban, Floriot, Johan, Marcos, Michel, Bailet, Christophe, Dohlen, Kjetil
We propose to explore a cascade extreme Adaptive optics (ExAO) approach with a second stage based on a Zernike wavefront sensor (ZWFS) for exoplanet imaging and spectroscopy. Most exoplanet imagers currently use a single-stage ExAO to correct for the
Externí odkaz:
http://arxiv.org/abs/2309.10465