Tootfinder

Physics-Informed Neural Networks: Bridging the Divide Between Conservative and Non-Conservative Equations
Arun Govind Neelan, Ferdin Sagai Don Bosco, Naveen Sagar Jarugumalli, Suresh Balaji Vedarethinam
https://arxiv.org/abs/2506.22413

Physics-Informed Neural Networks: Bridging the Divide Between Conservative and Non-Conservative Equations
In the realm of computational fluid dynamics, traditional numerical methods, which heavily rely on discretization, typically necessitate the formulation of partial differential equations (PDEs) in conservative form to accurately capture shocks and other discontinuities in compressible flows. Conversely, utilizing non-conservative forms often introduces significant errors near these discontinuities or results in smeared shocks. This dependency poses a considerable limitation, particularly as man…

Studying the variability of the He triplet to understand the detection limits of evaporating exoplanet atmospheres
Samson J. Mercier, Xavier Dumusque, Vincent Bourrier, Khaled Al Moulla, Michael Cretignier, William Dethier, Gaspare Lo Curto, Pedro Figueira, Christophe Lovis, Francesco Pepe, Nuno C. Santos, St\'ephane Udry, Fran\c{c}ois Wildi, Romain Allart, Fr\'ed\'erique Baron, Fran\c{c}ois Bouchy, Andres Carmona, Marion Cointepas, Ren\'e Doyon, Yolanda Frensch, Nolan …

Studying the variability of the He triplet to understand the detection limits of evaporating exoplanet atmospheres
With more than a dozen significant detections, the helium triplet has emerged as a key tracer of evaporating exoplanet atmospheres. This near-infrared feature can be observed from the ground and holds great promise, especially with upcoming observations provided by new-generation instruments such as the Near Infrared Planet Searcher (NIRPS). However, as the helium triplet is also present in stellar spectra, careful removal of the average stellar contribution is necessary to accurately character…

NIRPS joining HARPS at ESO 3.6 m. On-sky performance and science objectives
Francois Bouchy, Rene Doyon, Francesco Pepe, Claudio Melo, Etienne Artigau, Lison Malo, Francois Wildi, Frederique Baron, Xavier Delfosse, Jose Renan De Medeiros, Rafael Rebolo, Nuno C. Santos, Gregg Wade, Romain Allart, Khaled Al Moulla, Nicolas Blind, Charles Cadieux, Bruno L. Canto Martins, Neil J. Cook, Xavier Dumusque, Yolanda Frensch, Frederic Genest, Jonay I. Gonzalez Hernandez, Nolan Grieves, Gaspare Lo…

NIRPS joining HARPS at ESO 3.6 m. On-sky performance and science objectives
The Near-InfraRed Planet Searcher (NIRPS) is a high-resolution, high-stability near-infrared (NIR) spectrograph equipped with an AO system. Installed on the ESO 3.6-m telescope, it was developed to enable radial velocity (RV) measurements of low-mass exoplanets around M dwarfs and to characterise exoplanet atmospheres in the NIR. This paper provides a comprehensive design overview and characterisation of the NIRPS instrument, reporting on its on-sky performance, and presenting its GTO programme…

Identification and Characterization of a New Disruption Regime in ADITYA-U Tokamak
Soumitra Banerjee, Harshita Raj, Sk Injamul Hoque, Komal Yadav, Sharvil Patel, Ankit Kumar, Kaushlender Singh, Ashok Kumawat, Bharat Hegde, Subhojit Bose, Priyanka Verma, Kumudini Tahiliani, Asha Adhiya, Manoj Kumar, Rohit Kumar, Malay Bikash Chowdhuri, Nilam Ramaiya, Ananya Kundu, Suman Aich, Suman Dolui, K. A. Jadeja, K. M. Patel, Ankit Patel, Rakesh L. Tanna, Joydeep Ghosh

Identification and Characterization of a New Disruption Regime in ADITYA-U Tokamak
Disruptions continue to pose a significant challenge to the stable operation and future design of tokamak reactors. A comprehensive statistical investigation carried out on the ADITYA-U tokamak has led to the observation and characterization of a novel disruption regime. In contrast to the conventional Locked Mode Disruption (LMD), the newly identified disruption exhibits a distinctive two-phase evolution: an initial phase characterized by a steady rise in mode frequency with a nonlinearly satu…

Nonlocal-coupling-based control of coherence resonance
Aleksey Ryabov, Elena Rybalova, Andrei Bukh, Tatiana E. Vadivasova, Vladimir V. Semenov
https://arxiv.org/abs/2506.22909

Nonlocal-coupling-based control of coherence resonance
We demonstrate that nonlocal coupling enables control of the collective stochastic dynamics in the regime of coherence resonance. The control scheme based on the nonlocal interaction properties is presented by means of numerical simulation on an example of coupled FitzHugh-Nagumo oscillators. In particular, increasing the coupling radius is shown to enhance or to suppress the effect of coherence resonance which is reflected in the evolution of the dependence of the correlation time and the devi…

Generative Intelligence Systems in the Flow of Group Emotions
Fernando Koch, Jessica Nahulan, Jeremy Fox, Martin Keen
https://arxiv.org/abs/2507.11831 http…

Generative Intelligence Systems in the Flow of Group Emotions
Emotional cues frequently arise and shape group dynamics in interactive settings where multiple humans and artificial agents communicate through shared digital channels. While artificial agents lack intrinsic emotional states, they can simulate affective behavior using synthetic modalities such as text or speech. This work introduces a model for orchestrating emotion contagion, enabling agents to detect emotional signals, infer group mood patterns, and generate targeted emotional responses. The…