Prépublication
· 2026 arXiv
EN
Improving convective-scale skill in data-driven regional weather models requires better representing rare high-impact events, training at native resolution, broadening variable output, and demonstrating performance in real-time settings. Here, we evaluate thes...
Daniel Abdi, Isidora Jankov et al.
#physics.ao-ph
Prépublication
· 2026 arXiv
EN
Magnetic fields are vital in determining the physical conditions of baryons in massive halos. They are, however, notoriously difficult to observe. This impacts problems from our understanding of galaxy formation, to the observed deficit in the amplitude of the...
Kritti Sharma, Vikram Ravi et al.
#astro-ph.GA
Prépublication
· 2026 arXiv
EN
The primordial sound waves in the baryon-photon plasma are imprinted on the large-scale galaxy distribution as Baryon Acoustic Oscillations (BAO), serving as a cosmological standard ruler to constrain dark energy and the Hubble parameter. The upcoming 21cm int...
Ajith Sampath
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
We present a deep low-frequency radio point-source catalogue centred on the North Celestial Pole (NCP) and extending $5^\circ$ in radius, derived from a single 24-h observation with the 21 CentiMeter Array (21CMA). Covering 75-175 MHz, the catalogue characteri...
Qizhe Tang, Jingying Wang et al.
#astro-ph.IM
Prépublication
· 2026 arXiv
EN
Context. Some debris discs contain cold molecular gas. The origin of this gas is one of the key questions in our understanding of the evolution of planetary systems. The effect of gas on the smallest dust grains, which are expected to be unbound due to radiati...
Marija R. Jankovic, Tim D. Pearce et al.
#astro-ph.EP
Prépublication
· 2026 arXiv
EN
Venus is home to vivid sulfur chemistry, with SO$_2$ as the major sulfur gas species and a global cloud layer between 47 and~70 km composed of H$_2$SO$_4$ and H$_2$O. The chemistry in the clouds has been extensively studied with 1D models, but none is able to...
Maxence Lefèvre, Franck Lefèvre et al.
#astro-ph.EP
Prépublication
· 2026 arXiv
EN
T. Mazeh and coworkers pioneered a method using rotational photometric modulation as a proxy to infer stellar obliquities in Kepler transiting planetary systems, based on the expected positive correlation between spot-induced modulation amplitudes and stellar...
Kento Masuda, Subo Dong
#astro-ph.EP
Prépublication
· 2026 arXiv
EN
Antarctic ice shelves play a key role in controlling the mass loss of the Antarctic Ice Sheet. Increasing evidence from regional studies suggests the possibility of abrupt transitions from low to high basal melt regimes under future climate forcing. The comput...
Louis Saddier, Corentin Herbert et al.
#physics.ao-ph
Prépublication
· 2026 arXiv
EN
We analyze scale-by-scale budgets of velocity and buoyancy second-order structure functions using Large Eddy Simulation of the BOMEX trade-wind cumulus layer. The simulation utilizes a $10\,\mathrm{m}$ grid resolution under the anelastic approximation, incorpo...
Paweł Jędrejko, Marta Wacławczyk et al.
#physics.flu-dyn
Prépublication
· 2026 arXiv
EN
Satellite-derived bathymetry (SDB) is often proposed as a low-cost complement to multibeam surveys of ports, but its accuracy is seldom measured on an area the model has never seen. We test SDB in the turbid, shallow and tidal waters of the Abu Dhabi coast aga...
Muhammad Saeed, Fatema Al Hajri et al.
#cs.LG
Prépublication
· 2026 arXiv
EN
Frontier multimodal large language models (MLLMs) can control robots without robot-specific training, but how their capabilities compare and interact with post-trained vision-language-action (VLA) and world action model (WAM) policies across manipulation deman...
Yifei Yao, Yude Zou et al.
#cs.RO
Prépublication
· 2026 arXiv
EN
Selection bias in large language models (LLMs) can persist despite instructions to ignore presentation order or prompts that elicit reasoning. Recent efforts to reproduce Jev-style System One behavior have produced a growing family of models that predict proba...
Mingyang Song, Mao Zheng et al.
#cs.CL