Zobrazeno 1 - 10
of 837
pro vyhledávání: '"POURCELOT, P."'
Autor:
Soummer, Rémi, Por, Emiel H., Pourcelot, Raphaël, Redmond, Susan, Laginja, Iva, Will, Scott D., Perrin, Marshall D., Pueyo, Laurent, Sahoo, Ananya, Petrone, Peter, Brooks, Keira J., Fox, Rachel, Klein, Alex, Nickson, Bryony, Comeau, Thomas, Ferrari, Marc, Gontrum, Rob, Hagopian, John, Leboulleux, Lucie, Leongomez, Dan, Lugten, Joe, Mugnier, Laurent M., N'Diaye, Mamadou, Nguyen, Meiji, Noss, James, Sauvage, Jean-François, Scott, Nathan, Sivaramakrishnan, Anand, Subedi, Hari B., Weinstock, Sam
We present recent laboratory results demonstrating high-contrast coronagraphy for the future space-based large IR/Optical/Ultraviolet telescope recommended by the Decadal Survey. The High-contrast Imager for Complex Aperture Telescopes (HiCAT) testbe
Externí odkaz:
http://arxiv.org/abs/2409.13026
Autor:
Soummer, Rémi, Pourcelot, Raphaël, Por, Emiel H., Steiger, Sarah, Laginja, Iva, Buralli, Benjamin, Redmond, Susan, Pueyo, Laurent, Perrin, Marshall D., Ferrari, Marc, Fowler, Jules, Hagopian, John, N'Diaye, Mamadou, Nguyen, Meiji, Nickson, Bryony, Petrone, Peter, Sahoo, Ananya, Sivaramakrishnan, Anand, Will, Scott D.
We present the final results of the Apodized Pupil Lyot Coronagraph (APLC) on the High-contrast imager for Complex Aperture Telescopes (HiCAT) testbed, under NASA's Strategic Astrophysics Technology program. The HiCAT testbed was developed over the p
Externí odkaz:
http://arxiv.org/abs/2409.12931
Autor:
Steiger, Sarah, Pueyo, Laurent, Por, Emiel H., Chen, Pin, Soummer, Rémi, Pourcelot, Raphaël, Laginja, Iva, Bailey, Vanessa P.
Publikováno v:
Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130921W
One of the primary science goals of the Habitable Worlds Observatory (HWO) as defined by the Astro2020 decadal survey is the imaging of the first Earth-like planet around a Sun-like star. A key technology gap towards reaching this goal are the develo
Externí odkaz:
http://arxiv.org/abs/2409.05987
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:
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:
Laginja, Iva, Pourcelot, Raphaël
We revive a cross-platform focal-plane wavefront sensing and control algorithm originally released in 1980 and show that it can provide significant contrast improvements over conventional control methods on coronagraphic instruments. Its simplicity m
Externí odkaz:
http://arxiv.org/abs/2303.18231
Autor:
Pourcelot, Hugo
We prove that Mann-Robalo's construction of the brane action extends to general coherent $\infty$-operads, with possibly multiple colors and non-contractible spaces of unary operations. This requires to establish two results regarding spaces of exten
Externí odkaz:
http://arxiv.org/abs/2302.12206
Autor:
Pourcelot, R., Por, E. H., N'Diaye, M., Benard, H., Brady, G., Canas, L., Carbillet, M., Dohlen, K., Laginja, I., Lugten, J., Noss, J., Perrin, M. D., Petrone, P., Pueyo, L., Redmond, S. F., Sahoo, A., Vigan, A., Will, S. D., Soummer, R.
Publikováno v:
A&A 672, A73 (2023)
Wavefront sensing and control (WFSC) will play a key role in improving the stability of future large segmented space telescopes while relaxing the thermo-mechanical constraints on the observatory structure. Coupled with a coronagraph to reject the li
Externí odkaz:
http://arxiv.org/abs/2301.03242
Autor:
Vigan, A., Lopez, M., Morsy, M. El, Muslimov, E., Viret, A., Zins, G., Murray, G., Costille, A., Otten, G. P. P. L., Seemann, U., Anwand-Heerwart, H., Dohlen, K., Blanchard, P., Garcia, J., Charles, Y., Tchoubaklian, N., Ely, T., Phillips, M., Paufique, J., Beuzit, J. -L., Houllé, M., Costes, J., Pourcelot, R., Baraffe, I., Dorn, R., Jaquet, M., Kasper, M., Reiners, A., Smette, A., Blanco, L., Pallanca, L., Carlotti, A., Choquet, É., Mouillet, D., N'Diaye, M.
New generation exoplanet imagers on large ground-based telescopes are highly optimised for the detection of young giant exoplanets in the near-infrared, but they are intrinsically limited for their characterisation by the low spectral resolution of t
Externí odkaz:
http://arxiv.org/abs/2207.06436
Autor:
Morsy, M. El, Vigan, A., Lopez, M., Otten, G. P. P. L., Choquet, E., Madec, F., Costille, A., Sauvage, J. -F., Dohlen, K., Muslimov, E., Pourcelot, R., Floriot, J., Benedetti, J. -A., Blanchard, P., Balard, P., Murray, G.
Publikováno v:
A&A 667, A171 (2022)
On large ground-based telescopes, the combination of extreme adaptive optics (ExAO) and coronagraphy with high-dispersion spectroscopy (HDS), sometimes referred to as high-dispersion coronagraphy (HDC), is starting to emerge as a powerful technique f
Externí odkaz:
http://arxiv.org/abs/2205.12280