Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Ben Jaffel, Lotfi"'
Autor:
Ben-Jaffel, Lotfi, Moses, Julie, West, Robert A., aye, M-K., Bradley, Eric T., Clarke, John T., Holber, Jay B., Ballester, Gilda E.
Publikováno v:
Planet. Sci. J. 4 54 (2023)
A planet's Lyman-{\alpha} (Ly{\alpha}) emission is sensitive to its thermospheric structure. Here, we report joint Hubble Space Telescope (HST) and Cassini cross-calibration observations of the Saturn Ly{\alpha} emission made two weeks before the Cas
Externí odkaz:
http://arxiv.org/abs/2311.14191
In the pursuit of lunar exploration and the investigation of water presence on the lunar surface, a comprehensive understanding of plasma-surface interactions is crucial since the regolith's space weathering can create H$_2$O. However, the Moon is in
Externí odkaz:
http://arxiv.org/abs/2309.15852
The complex interplay between the Solar Wind and the lunar surface serves as a quintessential example of space weathering. However, uncertainties persist regarding the influence of plasma originating from Earth's ionosphere, necessitating a comprehen
Externí odkaz:
http://arxiv.org/abs/2309.15851
Autor:
Moses, Julianne I., Brown, Zarah L., Koskinen, Tommi T., Fletcher, Leigh N., Serigano, Joseph, Guerlet, Sandrine, Moore, Luke, Waite Jr., J. Hunter, Ben-Jaffel, Lotfi, Galand, Marina, Chadney, Joshua M., Hörst, Sarah M., Sinclair, James A., Vuitton, Veronique, Müller-Wodarg, Ingo
During the Grand Finale stage of the Cassini mission, organic-rich ring material was discovered to be flowing into Saturn's equatorial upper atmosphere at a surprisingly large rate. Through a series of photochemical models, we have examined the conse
Externí odkaz:
http://arxiv.org/abs/2211.05253
Autor:
Ben-Jaffel, Lotfi, Ballester, Gilda E., Muñoz, Antonio García, Lavvas, Panayotis, Sing, David K., Sanz-Forcada, Jorge, Cohen, Ofer, Kataria, Tiffany, Henry, Gregory W., Buchhave, Lars, Mikal-Evans, Thomas, Wakeford, Hannah R., López-Morales, Mercedes
Publikováno v:
Nature Astronomy 6, 2022, 141
The magnetosphere of an exoplanet has yet to be unambiguously detected. Investigations of star-planet interaction and neutral atomic hydrogen absorption during transit to detect magnetic fields in hot Jupiters have been inconclusive, and interpretati
Externí odkaz:
http://arxiv.org/abs/2211.05155
Autor:
Sing, David K., Lavvas, Panayotis, Ballester, Gilda E., Etangs, Alain Lecavelier des, Marley, Mark S., Nikolov, Nikolay, Ben-Jaffel, Lotfi, Bourrier, Vincent, Buchhave, Lars A., Deming, Drake L., Ehrenreich, David, Mikal-Evans, Thomas, Kataria, Tiffany, Lewis, Nikole K., Lopez-Morales, Mercedes, Munoz, Antonio Garcia, Henry, Gregory W., Sanz-Forcada, Jorge, Spake, Jessica J., Wakeford, Hannah R.
We present HST near-ultraviolet (NUV) transits of the hot Jupiter WASP-121b, acquired as part of the PanCET program. Time series spectra during two transit events were used to measure the transmission spectra between 2280 and 3070 Angstroms at a reso
Externí odkaz:
http://arxiv.org/abs/1908.00619
Autor:
Moses, Julianne I., Brown, Zarah L., Koskinen, Tommi T., Fletcher, Leigh N., Serigano, Joseph, Guerlet, Sandrine, Moore, Luke, Waite, J. Hunter, Jr., Ben-Jaffel, Lotfi, Galand, Marina, Chadney, Joshua M., Hörst, Sarah M., Sinclair, James A., Vuitton, Veronique, Müller-Wodarg, Ingo
Publikováno v:
In Icarus February 2023 391
Autor:
Evans, Thomas M., Sing, David K., Goyal, Jayesh, Nikolov, Nikolay, Marley, Mark S., Zahnle, Kevin, Henry, Gregory W., Barstow, Joanna K., Alam, Munazza K., Sanz-Forcada, Jorge, Kataria, Tiffany, Lewis, Nikole K., Lavvas, Panayotis, Ballester, Gilda E., Ben-Jaffel, Lotfi, Blumenthal, Sarah D., Bourrier, Vincent, Drummond, Benjamin, Munoz, Antonio Garcia, Lopez-Morales, Mercedes, Tremblin, Pascal, Ehrenreich, David, Wakeford, Hannah R., Buchhave, Lars A., Etangs, Alain Lecavelier des, Hebrard, Eric, Williamson, Michael H.
We present an atmospheric transmission spectrum for the ultra-hot Jupiter WASP-121b, measured using the Space Telescope Imaging Spectrograph (STIS) onboard the Hubble Space Telescope (HST). Across the 0.47-1 micron wavelength range, the data imply an
Externí odkaz:
http://arxiv.org/abs/1810.10969
Autor:
Evans, Thomas M., Sing, David K., Kataria, Tiffany, Goyal, Jayesh, Nikolov, Nikolay, Wakeford, Hannah R., Deming, Drake, Marley, Mark S., Amundsen, David S., Ballester, Gilda E., Barstow, Joanna K., Ben-Jaffel, Lotfi, Bourrier, Vincent, Buchhave, Lars A., Cohen, Ofer, Ehrenreich, David, Munoz, Antonio Garcia, Henry, Gregory W., Knutson, Heather, Lavvas, Panayotis, Etangs, Alain Lecavelier des, Lewis, Nikole K., Lopez-Morales, Mercedes, Mandell, Avi M., Sanz-Forcada, Jorge, Tremblin, Pascal, Lupu, Roxana
Publikováno v:
Nature, 548, 58-61 (3 August 2017)
Infrared radiation emitted from a planet contains information about the chemical composition and vertical temperature profile of its atmosphere. If upper layers are cooler than lower layers, molecular gases will produce absorption features in the pla
Externí odkaz:
http://arxiv.org/abs/1708.01076
Voyager Ultraviolet Spectrometers calibration and the heliosphere neutrals composition: reassessment
Autor:
Ben-Jaffel, Lotfi, Holberg, Jay B.
The Voyagers (V) 1 and 2 Ultraviolet Spectrometers (UVS) data harvest covers outer planets encounters, heliosphere sky-background measurements, and stellar spectrophotometry. Because their operation period overlaps with many ultraviolet missions, the
Externí odkaz:
http://arxiv.org/abs/1604.02656