16 papers
Hitting-time mixing for the star transposition shuffle
Vanshika Jain, Evita Nestoridi
We prove a hitting-time analogue of cutoff for the star transposition shuffle on the symmetric group S_n. Let tau be the first time at which every non-top card has been selected. W…
Characterization of the MUSE NFM PSF as a function of atmospheric conditions: TipTop calibration
Enrico Congiu, Fuyan Bian, Carlo F. Manara +8
The Multi Unit Spectroscopic Explorer (MUSE) achieves exceptional spatial resolution in narrow-field mode (NFM) thanks to the GALACSI adaptive optics (AO) system. However, limitati…
DM/WFS mis-registration tracking: Implementation and on-sky validation of SPRINT at LBT
Ben Buky, Cédric Taïssir Héritier, Fabio Rossi +7
The paper describes the implementation of the SPRINT method on the Large Binocular Telescope to track and correct mis‑registrations between the deformable mirror and wavefront sens…
ANDES, the high-resolution spectrograph of the ELT: simulated performance of the CORO module and overview of the high-contrast capabilities for exoplanet observations
M. N'Diaye, A. Simonnin, A. Spang +19
We present the simulated performance of the coronagraph (CORO) module for ANDES, the Extremely Large Telescope (ELT) high-resolution spectrograph. ANDES aims to address a broad ran…
MORFEO: Advancing Towards Final Design
Lorenzo Busoni, Guido Agapito, Marco Bonaglia +106
The paper reports on the design progress of MORFEO, the first‑generation adaptive‑optics module for the Extremely Large Telescope, describing its dual MCAO/SCAO operation, key hard…
Direct Imaging Discovery of Giant Exoplanet Pictoris d: A Decade-Long Game of Hide-and-Seek
Ben J. Sutlieff, Markus J. Bonse, Valentin Christiaens +94
The paper reports the direct imaging discovery of a third giant exoplanet, β Pictoris d, using VLT/ERIS and archival JWST/NIRCam and VLT/SPHERE data, and characterizes its orbit, t…