Zobrazeno 1 - 10
of 153
pro vyhledávání: '"Riggs, A J Eldorado"'
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:
Jenkins, Emory L., Anche, Ramya M., Van Gorkom, Kyle J., Riggs, A. J. Eldorado, Douglas, Ewan S.
Future space observatories will likely have segmented primaries, causing diffraction effects that reduce coronagraph performance. Reflective binary pupil apodizer masks can mitigate these, with the metamaterial black silicon (BSi) showing promise as
Externí odkaz:
http://arxiv.org/abs/2406.19028
Autor:
Liberman, Joshua, Llop-Sayson, Jorge, Bertrou-Cantou, Arielle, Mawet, Dimitri, Desai, Niyati, Haffert, Sebastiaan Y, Riggs, A J Eldorado
Connecting a coronagraph instrument to a spectrograph via a single-mode optical fiber is a promising technique for characterizing the atmospheres of exoplanets with ground and space-based telescopes. However, due to the small separation and extreme f
Externí odkaz:
http://arxiv.org/abs/2405.05501
Autor:
Mennesson, Bertrand, Belikov, Ruslan, Por, Emiel, Serabyn, Eugene, Ruane, Garreth, Riggs, A. J. Eldorado, Sirbu, Dan, Pueyo, Laurent, Soummer, Remi, Kasdin, Jeremy, Shaklan, Stuart, Seo, Byoung-Joon, Stark, Christopher, Cady, Eric, Chen, Pin, Crill, Brendan, Fogarty, Kevin, Greenbaum, Alexandra, Guyon, Olivier, Juanola-Parramon, Roser, Kern, Brian, Krist, John, Macintosh, Bruce, Marx, David, Mawet, Dimitri, Prada, Camilo Mejia, Morgan, Rhonda, Nemati, Bijan, Pogorelyuk, Leonid, Redmond, Susan, Seager, Sara, Siegler, Nicholas, Stapelfeldt, Karl, Steiger, Sarah, Trauger, John, Ygouf, a James K. Wallace Marie, Zimmerman, Neil
We summarize the current best polychromatic (10 to 20 % bandwidth) contrast performance demonstrated in the laboratory by different starlight suppression approaches and systems designed to directly characterize exoplanets around nearby stars. We pres
Externí odkaz:
http://arxiv.org/abs/2404.18036
Autor:
Ashcraft, Jaren N., Douglas, Ewan S., Anche, Ramya, Dube, Brandon D., Derby, Kevin Z., Furenlid, Lars, Kautz, Maggie, Kim, Daewook, Milani, Kian, Riggs, A. J. Eldorado
Paraxial diffraction modeling based on the Fourier transform has seen widespread implementation for simulating the response of a diffraction-limited optical system. For systems where the paraxial assumption is not sufficient, a class of algorithms ha
Externí odkaz:
http://arxiv.org/abs/2404.12454
Autor:
Poon, Phillip K., Potier, Axel, Ruane, Garreth, Walter, Alex B., Riggs, A J Eldorado, Noyes, Matthew, Prada, Camilo Mejia, Ahn, Kyohoon, Guyon, Olivier
Due to the low flux of exoEarths, long exposure times are required to spectrally characterize them. During these long exposures, the contrast in the dark hole will degrade as the the optical system drifts from its initial DH state. To prevent such co
Externí odkaz:
http://arxiv.org/abs/2309.17449
Autor:
Krist, John E., Steeves, John B., Dube, Brandon D., Riggs, A. J. Eldorado, Kern, Brian D., Marx, David S., Cady, Eric J., Zhou, Hanying, Poberezhskiy, Ilya Y., Baker, Caleb W., McGuire, James P., Nemati, Bijan, Kuan, Gary M., Mennesson, Bertrand, Trauger, John T., Saini, Navtej S., Rafels, Sergi Hildebrandt
Publikováno v:
J.Astron.Telescopes.Instruments.And.Systems 9(4) 045002 (2023)
The Roman Space Telescope will have the first advanced coronagraph in space, with deformable mirrors for wavefront control, low-order wavefront sensing and maintenance, and a photon-counting detector. It is expected to be able to detect and character
Externí odkaz:
http://arxiv.org/abs/2309.16012
Autor:
Desai, Niyati, Mawet, Dimitri, Serabyn, Eugene, Ruane, Garreth, Bertrou-Cantou, Arielle, Llop-Sayson, Jorge, Riggs, A J Eldorado
Publikováno v:
J. Astron. Telesc. Instrum. Syst. 10(1) 015001 (14 February 2024)
Current scalar coronagraph focal plane mask designs are performance-limited by chromaticity. We investigate the effects of adding central Roddier and dual zone phase dimples to scalar vortex masks to improve broadband performance by suppressing the c
Externí odkaz:
http://arxiv.org/abs/2309.05146
Autor:
Desai, Niyati, Potier, Axel, Redmond, Susan F., Ruane, Garreth, Poon, Phillip K., Riggs, A. J. Eldorado, Noyes, Matthew, Prada, Camilo Mejia
Publikováno v:
J. Astron. Telesc. Instrum. Syst. 10(3), 035001 (2024)
Future space telescope coronagraph instruments hinge on the integration of high-performance masks and precise wavefront sensing and control techniques to create dark holes essential for exoplanet detection. Recent advancements in wavefront control al
Externí odkaz:
http://arxiv.org/abs/2309.04920
Autor:
Ruane, Garreth, Wallace, J. Kent, Riggs, A J Eldorado, Wenger, Tobias, Bagheri, Mahmood, Jewell, Jeffrey, Raouf, Nasrat, Allan, Gregory, Prada, Camilo Mejia, Noyes, Matthew, Walter, Alex B.
Publikováno v:
Proc. SPIE 1268018 (2023)
Directly imaging Earth-sized exoplanets with a visible-light coronagraph instrument on a space telescope will require a system that can achieve $\sim10^{-10}$ raw contrast and maintain it for the duration of observations (on the order of hours or mor
Externí odkaz:
http://arxiv.org/abs/2308.10395