Tootfinder

Autonomous Legged Mobile Manipulation for Lunar Surface Operations via Constrained Reinforcement Learning
Alvaro Belmonte-Baeza, Miguel Cazorla, Gabriel J. Garc\'ia, Carlos J. P\'erez-Del-Pulgar, Jorge Pomares
https://arxiv.org/abs/2510.12684

Autonomous Legged Mobile Manipulation for Lunar Surface Operations via Constrained Reinforcement Learning
Robotics plays a pivotal role in planetary science and exploration, where autonomous and reliable systems are crucial due to the risks and challenges inherent to space environments. The establishment of permanent lunar bases demands robotic platforms capable of navigating and manipulating in the harsh lunar terrain. While wheeled rovers have been the mainstay for planetary exploration, their limitations in unstructured and steep terrains motivate the adoption of legged robots, which offer super…

Time-resolved solvation dynamics of Li$^ $, Na$^ $ and K$^ $ ions in liquid helium nanodroplets
Jeppe K. Christensen, Simon H. Albrechtsen, Christian E. Petersen, Constant A. Schouder, Iker S\'anchez-P\'erez, Pedro Javier Carchi-Villalta, Massimiliano Bartolomei, Fernando Pirani, Tom\'as Gonz\'alez-Lezana, Henrik Stapelfeldt
https://

Time-resolved solvation dynamics of Li$^+$, Na$^+$ and K$^+$ ions in liquid helium nanodroplets
In 2023, ultrafast pump-probe spectrocopy was used to record the solvation dynamics of a single Na$^+$ ion in a liquid helium droplet, atom-by-atom and with femtosecond time resolution [Albrechtsen \textit{et al., Nature}, 2023, \textbf{623}, 319]. Subsequently, theoretical studies showed that other alkali ions solvate in a similar manner but no experimental results were reported so far. Here, we extend the previous measurement on Na$^+$ to Li$^+$ and K$^+$ ions. A pump pulse selectively ionize…

The MIRI Excesses around Degenerates (MEAD) Survey I: A candidate cold brown dwarf in orbit around the nearby white dwarf 2MASS J09424023-4637176
Lo\"ic Albert (D\'epartement de Physique and Observatoire du Mont-M\'egantic, Universit\'e de Montr\'eal, Trottier Institute for Research on Exoplanets), Sabrina R. Poulsen (Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma), \'Erika Le Bourdais (D\'epartement de physique and Institut Trot…

The MIRI Excesses around Degenerates (MEAD) Survey I: A candidate cold brown dwarf in orbit around the nearby white dwarf 2MASS J09424023-4637176
The MIRI Excesses Around Degenerates Survey is a Cycle 2 James Webb Space Telescope (JWST) Survey program designed to image nearby white dwarfs in the mid-IR with the MIRI imaging mode. Only a handful of white dwarfs have previously been observed beyond 8~\micron. This survey gathered observations for 56 white dwarfs within 25~pc at 10 and 15~\micron, probing each white dwarf for unresolved IR excesses, IR flux deficits indicative of collision induced absorption, or resolved substellar companio…

An Ultra-Short Period Super-Earth and Sub-Neptune Spanning the Radius Valley Orbiting the Kinematic Thick Disk Star TOI-2345
Yoshi Nike Emilia Eschen, Thomas G. Wilson, Andrea Bonfanti, Carina M. Persson, S\'ergio G. Sousa, Monika Lendl, Alexis Heitzmann, Attila E. Simon, G\"oran Olofsson, Amadeo Castro-Gonz\'alez, Jo Ann Egger, Luca Fossati, Alexander James Mustill, Hugh P. Osborn, Hugo G. Vivien, Yann Alibert, Roi Alonso, Tamas B\'arczy, David Barrado, Susana C. C. B…

An Ultra-Short Period Super-Earth and Sub-Neptune Spanning the Radius Valley Orbiting the Kinematic Thick Disk Star TOI-2345
A crucial chemical link between stars and their orbiting exoplanets is thought to exist. If universal, this connection could affect the formation and evolution of all planets. Therefore, this potential vital link needs testing by characterising exoplanets around chemically-diverse stars. We present the discovery of two planets orbiting the metal-poor, kinematic thick-disk K-dwarf TOI-2345. TOI-2345 b is a super-Earth with a period of 1.05 days and TOI-2345 c is a sub-Neptune with a period of 21…

Born on this day in 1919,
Art Blakey
—jazz drumming legend and founder of The Jazz Messengers.
For 35 years, he turned rhythm into mentorship, shaping generations of greats with every beat.
https://bsky.app/profile/thatericalper.com/post/3m2xtmjzn7y2l…

Eric Alper (@thatericalper.com)
Born on this day in 1919, Art Blakey—jazz drumming legend and founder of The Jazz Messengers. For 35 years, he turned rhythm into mentorship, shaping generations of greats with every beat.

Extremely UV-bright starbursts at the end of cosmic reionization
R. Marques-Chaves, D. Schaerer, M. Dessauges-Zavadsky, J. \'Alvarez-M\'arquez, T. Hashimoto, L. Colina, A. K. Inoue, C. Blanco-Prieto, Y. Nakazato, L. Costantin, S. Arribas, T. J. L. C. Bakx, D. Ceverino, A. Crespo G\'omez, Y. Fudamoto, M. Hagimoto, A. Hamada, Y. Matsuoka, K. Mawatari, M. Onoue, W. Osone, Y. W. Ren, Y. Sugahara, Y. Terui, N. Yoshida

Extremely UV-bright starbursts at the end of cosmic reionization
We present a study of 27 very UV-bright (-22.0

Towards High-Efficiency Particle Detection Using Superconducting Microwire Arrays
Christina Wang, Cristi\'an Pe\~na, Adolf Bornheim, Shuoxing Wu, Alexander Albert, Thomas Sievert, Artur Apresyan, Emanuel Knehr, Boris Korzh, Jamie Luskin, Ludovico Mori, Sahil Patel, Guillermo Reales Guti\'errez, Manish Sahu, Ekkehart Schmidt, Matthew Shaw, Elise Sledge, Maria Spiropulu, Towsif Taher, Si Xie

Towards High-Efficiency Particle Detection Using Superconducting Microwire Arrays
We present a detailed study of an 8-channel $1\times1$ mm$^{2}$ WSi superconducting microwire single photon detector (SMSPD) array exposed to 120 GeV hadron beam and 120 GeV muon beam at the CERN Super Proton Synchrotron H6 beamline. Following up on our first detailed characterization of the efficiency and response of an SMSPD fabricated on a 3 nm WSi film, we report measurements of enhanced particle detection efficiency using a sensor fabricated from a thicker 4.7nm-thick WSi film. We also rep…

Neutrino signal from the hadron-quark phase transition in the conversion of Neutron Stars into Quark Stars
Yossef Zenati, Conrado Albertus Torres, Joseph Silk, M. \'Angeles P\'erez-Garc\'ia
https://arxiv.org/abs/2510.08707

Neutrino signal from the hadron-quark phase transition in the conversion of Neutron Stars into Quark Stars
We calculate in a 1D General Relativistic (GR) hydrodynamic simulation the neutrino luminosity in an astrophysical scenario where a neutron star (NS) displays a hadron-quark phase transition (HQPT) into a Quark Star (QS). Deconfinement is triggered once the central density exceeds a critical threshold above $\sim 3n_0$ being $n_0$, saturation density. We use descriptions based on DD2 and the MIT Bag model equations of state (EOSs). We account for neutrinos using a microphysics forward emission …

Ground state magnetic structure of Mn3Sn
Jeppe Jon Cederholm, Zhian Xu, Yanfeng Guo, Martin Ovesen, Thomas Olsen, Kristine M. L. Krighaar, Chrystalla Knekna, Jian Rui Soh, Youngro Lee, Navid Qureshi, Jose Alberto Rodriguez Velamazan, Eric Ressouche, Andrew T. Boothroyd, Henrik Jacobsen
https://arxiv.org/abs/2510.06808

Ground state magnetic structure of Mn3Sn
We use spherical neutron polarimetry to determine the ground state magnetic structure of Mn3Sn. We find that Mn3Sn adopts an inverse triangular structure with spins parallel to <100> (Type III) rather than spins parallel to <110> (Type IV). Density functional theory calculations reveal no energy difference between these two structures, suggesting that the selection is caused by subtle effects such as sixth-order anisotropy. Partial control of the magnetic domain population through a moderate ma…

Directional strong coupling at the nanoscale between hyperbolic polaritons and organic molecules
Ana I. F. Tresguerres-Mata, Olga G. Matveeva, Christian Lanza, Jos\'e \'Alvarez-Cuervo, Kirill V. Voronin, Francesco Calavalle, Garen Avedissian, Pablo D\'iaz-N\'u\~nez, Gonzalo \'Alvarez-P\'erez, Aitana Tarazaga Mart\'in-Luengo, Javier Taboada-Guti\'errez, Jiahua Duan, Javier Mart\'in-S\'anchez, Andrei Bylinkin, Rainer Hillenbrand, Artem Mishchenko, …

Directional strong coupling at the nanoscale between hyperbolic polaritons and organic molecules
Strong coupling (SC) is a fundamental concept in physics that describes extreme interactions between light and matter. Recent experiments have demonstrated SC at the nanometer scale, where strongly confined polaritons, rather than photons, couple to quantum emitters or molecular vibrations. Coupling with the latter is generally referred to as vibrational SC (VSC) and is of significant fundamental and technological interest, as it can be an effective tool for modifying molecular properties. Howe…