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Gaia Data Release 3: All-sky classification of 12.4 million variable sources into 25 classes
Lorenzo Rimoldini, Berry Holl, Panagiotis Gavras +31
Gaia DR3 contains 1.8 billion sources with G-band photometry, 1.5 billion of which with BP and RP photometry, complemented by positions on the sky, parallax, and proper motion. The…
Nonlinear Reconstruction for Operator Learning of PDEs with Discontinuities
Samuel Lanthaler, Roberto Molinaro, Patrik Hadorn +1
A large class of hyperbolic and advection-dominated PDEs can have solutions with discontinuities. This paper investigates, both theoretically and empirically, the operator learning…
Rubin Observatory LSST Transients and Variable Stars Roadmap
Kelly M. Hambleton, Federica B. Bianco, Rachel Street +79
The Vera C. Rubin Legacy Survey of Space and Time holds the potential to revolutionize time domain astrophysics, reaching completely unexplored areas of the Universe and mapping va…
wPINNs: Weak Physics informed neural networks for approximating entropy solutions of hyperbolic conservation laws
Tim De Ryck, Siddhartha Mishra, Roberto Molinaro
Physics informed neural networks (PINNs) require regularity of solutions of the underlying PDE to guarantee accurate approximation. Consequently, they may fail at approximating dis…
An updated metal-dependent theoretical scenario for Classical Cepheids
Giulia De Somma, Marcella Marconi, Roberto Molinaro +3
To properly quantify possible residual systematic errors affecting the Classical Cepheid distance scale, a detailed theoretical scenario is recommended. By extending the set of non…
New theoretical Period-Luminosity-Metallicity relations for RR Lyrae in the Rubin-LSST filters
Marcella Marconi, Roberto Molinaro, Massimo Dall'Ora +8
The revolutionary power of future Rubin-LSST observations will allow us to significantly improve the physics of pulsating stars, including RR Lyrae. In this context, an updated the…