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326 papers · 1 filter
Coarse fixed point properties
Romain Tessera, Jeroen Winkel
We investigate fixed point properties for isometric actions of topological groups on a wide class of metric spaces, with a particular emphasis on Hilbert spaces. Instead of requiri…
Homogenization of Helmholtz equation in a periodic layer to study Faraday cage-like shielding effects
S Aiyappan, Georges Griso, Julia Orlik
The work is motivated by the Faraday cage effect. We consider the Helmholtz equation over a 3D-domain containing a thin heterogeneous interface of thickness . The layer has…
Discovery of TOI-1260d and the characterisation of the multi-planet system
Kristine W. F. Lam, J. Cabrera, M. J. Hooton +83
We report the discovery of a third planet transiting the star TOI-1260, previously known to host two transiting sub-Neptune planets with orbital periods of 3.127 and 7.493 days, re…
Observation of night-time emissions of the Earth in the near UV range from the International Space Station with the Mini-EUSO detector
M. Casolino, D. Barghini, M. Battisti +47
Mini-EUSO (Multiwavelength Imaging New Instrument for the Extreme Universe Space Observatory) is a telescope observing the Earth from the International Space Station since 2019. Th…
Dynamics of the Great Oxidation Event from a 3D photochemical-climate model
Adam Yassin Jaziri, Benjamin Charnay, Franck Selsis +2
From the Archean toward the Proterozoic, the Earth's atmosphere underwent a major shift from anoxic to oxic conditions, around 2.4 to 2.1 Gyr, known as the Great Oxidation Event (G…
Evidence for large-scale excesses associated with low HI column densities in the sky I. Dust excess
Jean-Marc Casandjian, Jean Ballet, Isabelle Grenier +1
Where dust and gas are uniformly mixed, atomic hydrogen can be traced through the detection of far-infrared (FIR) or UV emission of dust. We considered, for the origin of discrepan…