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6 months 3 days ago

In a recent study the ByoPiC team takes advantage of the most recent X-ray survey, SRG/eROSITA, to confirm unambiguously the detection of an X-ray signal associated with thermal emission from a hot plasma in cosmic filaments.

This signal from only 460 filaments, located in the first 140 deg² survey published by the SRG/eROSITA collaboration, has allowed the density and temperature of the plasma to be constrained precisely.

6 months 3 weeks ago

The EUI (Extreme Ultraviolet Imager) instrument on board the Solar Orbiter mission keeps on revealing new types of phenomena in the solar atmosphere. Last in date, an event nicknamed ‘the snake’ features the propagation of a bright front at 170 km/s along a twisted structure know as a ‘filament’, a tube of cool plasma maintained above the surface in the hot corona by the magnetic field.

8 months 2 weeks ago

The Japanese Hayabusa2 mission (JAXA) has brought back samples from the carbonaceous primitive asteroid Ryugu. Thanks to the analyses of these samples by an international group led by Prof. Tomoki Nakamura (Tohoku Univ., Japan), it is possible to propose a scenario retracing the history of Ryugu, including its formation after the fragmentation of its parent asteroid.


8 months 2 weeks ago

Hubert Bretonnière, Cosmology team, defended his thesis entitled "Galaxy morphology for Euclid: Simulations, forecasts and detection with deep learning", carried out under the supervision of Hervé Dole, Marc Huertas-Company, and Alexandre Boucaud. He is now a new doctor of Université Paris Saclay and is leaving for the University of Santa Cruz (USA). Congratulations to him!

8 months 3 weeks ago

Using the orbital imaging spectroscopy instruments OMEGA (Mars Express) and CRISM (MRO), the Solar System team has released the first global and high resolution map of hydrated minerals on Mars. These minerals hold the distinction of having been formed through interaction between the ancient Martian crust and liquid water, while many of them still contain some amount of water trapped within their structure. Such hydrated minerals are excellent tracers of past water-bearing environments and are a primary target of exobiology missions to Mars.

9 months 3 days ago

The most detailed and complete images ever taken of a Photo-Dissociation Region (PDR) in the closest site of massive star formation, the Orion Molecular Cloud, have been obtained with the Keck telescope and portends what JWST should soon accomplish. These observations are critical for understanding the interaction of young massive stars with the gas and dust cloud in which they are born and where Sun-like stars form.

10 months 3 weeks ago

The PLATO project has reached a new decisive stage in the development of the calibration structure for the cameras intended for flight at IAS. The first EM (Engineering Model) camera to be calibrated by the three Test Houses of the PLATO consortium has just arrived at the IAS. This measurement campaign will allow the three production sites to be validated with the same functional camera, which is a prerequisite for being authorised to host all the flight cameras.


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