Zobrazeno 1 - 10
of 231
pro vyhledávání: '"Sergi R"'
Autor:
Damiano, Mario, Shaklan, Stuart, Hu, Renyu, Dunne, Brian, Tanner, Angelle, Nida, Aly, Carson, Joseph C., Hildebrandt, Sergi R., Lisman, Doug
Starshade is one of the technologies that will enable the observation and characterization of small planets around nearby stars through direct imaging. The Starshade Exoplanetary Data Challenge (SEDC) was designed to validate starshade-imaging's nois
Externí odkaz:
http://arxiv.org/abs/2410.09183
Autor:
Bailey, Vanessa P., Bendek, Eduardo, Monacelli, Brian, Baker, Caleb, Bedrosian, Gasia, Cady, Eric, Douglas, Ewan S., Groff, Tyler, Hildebrandt, Sergi R., Kasdin, N. Jeremy, Krist, John, Macintosh, Bruce, Mennesson, Bertrand, Morrissey, Patrick, Poberezhskiy, Ilya, Subedi, Hari B., Rhodes, Jason, Roberge, Aki, Ygouf, Marie, Zellem, Robert T., Zhao, Feng, Zimmerman, Neil T.
The Nancy Grace Roman Space Telescope Coronagraph Instrument is a critical technology demonstrator for NASA's Habitable Worlds Observatory. With a predicted visible-light flux ratio detection limit of 1E-8 or better, it will be capable of reaching ne
Externí odkaz:
http://arxiv.org/abs/2309.08672
Autor:
Zellem, Robert T., Nemati, Bijan, Gonzalez, Guillermo, Ygouf, Marie, Bailey, Vanessa P., Cady, Eric J., Colavita, M. Mark, Hildebrandt, Sergi R., Maier, Erin R., Mennesson, Bertrand, Payne, Lindsey, Zimmerman, Neil, Belikov, Ruslan, De Rosa, Robert J., Debes, John, Douglas, Ewan S., Girard, Julien, Groff, Tyler, Kasdin, Jeremy, Lowrance, Patrick J., Macintosh, Bruce, Ryan, Daniel, Weisberg, Carey
NASA's next flagship mission, the Nancy Grace Roman Space Telescope, is a 2.4-meter observatory set to launch no later than May 2027. Roman features two instruments: the Wide Field Imager and the Coronagraph Instrument. Roman's Coronagraph is a Techn
Externí odkaz:
http://arxiv.org/abs/2202.05923
Autor:
Turnbull, Margaret C., Zimmerman, Neil, Girard, Julien H., Hildebrandt, Sergi R., Li, Zhexing, Bogat, Ell, Gonzalez-Quiles, Junellie, Stark, Christopher, Mandell, Avi, Meshkat, Tiffany, Kane, Stephen R.
Operating in an unprecedented contrast regime ($10^{-7}$ to $10^{-9}$), the Roman Coronagraph Instrument (CGI) will serve as a pathfinder for key technologies needed for future Earth-finding missions. The Roman Exoplanet Imaging Data Challenge (Roman
Externí odkaz:
http://arxiv.org/abs/2105.14140
Autor:
Li, Zhexing, Hildebrandt, Sergi R., Kane, Stephen R., Zimmerman, Neil T., Girard, Julien H., Gonzalez-Quiles, Junellie, Turnbull, Margaret C.
Future direct imaging missions will primarily observe planets that have been previously detected, mostly via the radial velocity (RV) technique, to characterize planetary atmospheres. In the meantime, direct imaging may discover new planets within ex
Externí odkaz:
http://arxiv.org/abs/2104.13531
Autor:
Hu, Renyu, Hildebrandt, Sergi R., Damiano, Mario, Shaklan, Stuart, Martin, Stefan, Lisman, Doug
Starshade in formation flight with a space telescope is a rapidly maturing technology that would enable imaging and spectral characterization of small planets orbiting nearby stars in the not-too-distant future. While performance models of the starsh
Externí odkaz:
http://arxiv.org/abs/2103.09359
Direct imaging of widely separated exoplanets from space will obtain their reflected light spectra and measure atmospheric properties. Previous calculations have shown that a change in the orbital phase would cause a spectral signal, but whether this
Externí odkaz:
http://arxiv.org/abs/2009.08579
Autor:
Díaz-Sánchez, Anastasio, Pérez-Garrido, Antonio, Villó, Isidro, Rebolo, Rafael, Pérez-Prieto, Jorge A., Oscoz, Alejandro, Hildebrandt, Sergi R., López, Roberto, Rodríguez, Luis F.
We present high-resolution I-band imaging of the core of the globular cluster M15 obtained at the 2.5 m Nordic Optical Telescope with FastCam, a low readout noise L3CCD based instrument. Short exposure times (30 ms) were used to record 200000 images
Externí odkaz:
http://arxiv.org/abs/1204.5340
Autor:
Pietrobon, Davide, Gorski, Krzysztof M., Bartlett, James, Banday, Anthony J., Dobler, Gregory, Colombo, Loris P. L., Pagano, Luca, Rocha, Graca, Saha, Rajib, Jewell, Jeffrey B., Hildebrandt, Sergi R., Eriksen, Hans Kristian, Lawrence, Charles R.
Publikováno v:
ApJ, 755, 69 (2012)
We analyse WMAP 7-year temperature data, jointly modeling the cosmic microwave background (CMB) and Galactic foreground emission. We use the Commander code based on Gibbs sampling. Thus, from the WMAP7 data, we derive simultaneously the CMB and Galac
Externí odkaz:
http://arxiv.org/abs/1110.5418
Publikováno v:
Phys.Lett.B671:486-492,2009
We show that elementary aligned electromagnetic excitations of black holes, as coming from exact Kerr-Schild solutions, represent light-like beam pulses which have a very strong back reaction on the metric and change the topology of the horizon. Base
Externí odkaz:
http://arxiv.org/abs/0705.3551