Zobrazeno 1 - 10
of 59 234
pro vyhledávání: '"IVA, A. A."'
Autor:
Dokuzova, Iva
A 3-dimensional Riemannian manifold equipped with a tensor structure of type $(1,1)$, whose fourth power is the identity, is considered. This structure acts as an isometry with respect to the metric. A Riemannian almost product manifold associated wi
Externí odkaz:
http://arxiv.org/abs/2409.19626
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:
Lau, Alexis, Choquet, Élodie, Altinier, Lisa, Laginja, Iva, Soummer, Rémi, Pueyo, Laurent, Godoy, Nicolas, Vigan, Arthur, Mary, David
The Roman Space Telescope will be a critical mission to demonstrate high-contrast imaging technologies allowing for the characterisation of exoplanets in reflected light. It will demonstrate $10^{-7}$ contrast limits or better at 3--9 $\lambda / D$ s
Externí odkaz:
http://arxiv.org/abs/2409.11062
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
We describe an efficient algorithm to compute finite type invariants of type $k$ by first creating, for a given knot $K$ with $n$ crossings, a look-up table for all subdiagrams of $K$ of size $\lceil \frac{k}{2}\rceil$ indexed by dyadic intervals in
Externí odkaz:
http://arxiv.org/abs/2408.15942
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
Partial differential equations (PDEs) are extensively utilized for modeling various physical phenomena. These equations often depend on certain parameters, necessitating either the identification of optimal parameters or solving the equation across m
Externí odkaz:
http://arxiv.org/abs/2407.17171
Autor:
Laginja, Iva, Doelman, David, Snik, Frans, Baudoz, Pierre, Bettonvil, Felix, Rietjens, Jeroen H., van Dijk, Chris N., Peeters, Kristien, Eigenraam, Alexander, Pougheon, Erin, van der Wielen, Tom, Esposito, Marco, Wijnen, Thomas, Krasteva, Mariya, Taccola, Matteo
Publikováno v:
Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 1309280
This paper presents initial results from the ESA-funded ``SUPPPPRESS'' project, which aims to develop high-performance liquid-crystal coronagraphs for direct imaging of Earth-like exoplanets in reflected light. The project focuses on addressing the s
Externí odkaz:
http://arxiv.org/abs/2407.14723
In this study, we examine the role of the repulsive Casimir force in counteracting the gravitational contraction of a thin spherically symmetric shell. Our main focus is to explore the possibility of achieving a stable balanced configuration within t
Externí odkaz:
http://arxiv.org/abs/2407.11547