May 03, 2024
An international team of researchers, including members from CEA, utilized NASA's James Webb Space Telescope to map the weather of the hot gas giant WASP-43 b.
Measurements in mid-infrared obtained with the MIRI instrument, combined with 3D climate models and other observations, suggest the presence of thick and dense clouds on the night side, clear skies on the day side, and equatorial winds reaching up to 8,000 km/h, mixing atmospheric gases around the planet.
Nov 15, 2023
An international team, led by astrophysicists from CEA, has observed the passage of exoplanet Wasp-107b in front of its star, with the aim of characterizing its atmosphere.
An international team of scientists, led by the Astrophysics Department of the CEA, has observed for the first time the swollen atmosphere of the exoplanet WASP-107b in the mid-infrared using the James Webb Space Telescope.
While water vapor has indeed been detected, it is accompanied by sulfur dioxide (SO2) and silicate clouds (resembling sand clouds), rather than methane (CH4) as models predicted.
Apr 22, 2010
Delivery of the Flight Model for a launch planned to take place in 2014
The Astrophysics Department of CEA-Irfu, which has scientific and technical responsibility for the MIRIM imager (Mid Infrared Imager) on the MIRI spectro-imager, one of the major instruments of the forthcoming James Webb Space Telescope (JWST), has just delivered the final model of the imager to the Appleton Rutherford laboratory in England, who will carry out the final test before the delivering it for integration into the JWST at the start of 2011 [1].
