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Hypervelocity stars (HVSs) are amongst the fastest objects in our Milky Way. These stars are predicted to come from the Galactic center (GC) and travel along unbound orbits across the Galaxy. In the coming years, the ESA satellite Gaia will…

Astrophysics of Galaxies · Physics 2018-03-21 T. Marchetti , O. Contigiani , E. M. Rossi , J. G. Albert , A. G. A. Brown , A. Sesana

The second Gaia data release (DR2), contains very precise astrometric and photometric properties for more than one billion sources, astrophysical parameters for dozens of millions, radial velocities for millions, variability information for…

In an earlier work, we demonstrated the effectiveness of Bayesian neural networks in estimating the missing line-of-sight velocities of Gaia stars, and published an accompanying catalogue of blind predictions for the line-of-sight…

Astrophysics of Galaxies · Physics 2023-12-13 Aneesh P. Naik , Axel Widmark

This study addresses the optimisation of task allocation for Unmanned Aerial Vehicles (UAVs) within industrial monitoring missions. The proposed methodology integrates a Genetic Algorithms (GA) with a 2-Opt local search technique to obtain…

Systems and Control · Electrical Eng. & Systems 2025-06-26 Hamza Chakraa , François Guérin , Edouard Leclercq , Dimitri Lefebvre

All-sky surveys of low-cadence nature, such as the promising Gaia Space mission, have the potential to "hide" planetary transit signals. We developed a novel detection technique, the Directed Follow-Up strategy (DFU), to search for…

Earth and Planetary Astrophysics · Physics 2014-11-05 Yifat Dzigan , Shay Zucker

Modern science, technology, and politics are all permeated by data that comes from people, measurements, or computational processes. While this data is often incomplete, corrupt, or lacking in sufficient accuracy and precision, explicit…

We discuss the impact that Gaia, a European Space Agency (ESA) cornerstone mission that has been in scientific operations since July 2014, is expected to have on the definition of the cosmic distance ladder and the study of resolved stellar…

Solar and Stellar Astrophysics · Physics 2018-06-08 Gisella Clementini , Alessia Garofalo , Tatiana Muraveva , Vincenzo Ripepi

The high spatial resolution and precise astrometry and photometry of the Gaia mission should make it particularly apt at discovering and resolving transients occurring in, or near, the centres of galaxies. Indeed, some nuclear transients…

The coming data releases of Gaia are expected to result in an upheaval of exoplanet science, in particular for long period giant planets ($0.2 {\rm M_{J}} \leq M\leq25 {\rm M_{J}}$). One class of exoplanets which Gaia will help investigate…

Earth and Planetary Astrophysics · Physics 2026-03-04 Thomas A. Baycroft , Amaury H. M. J Triaud , Johannes Sahlmann

CONTEXT: The unparalleled characteristics of Gaia photometry make it an excellent choice to study stellar variability. AIMS: To measure the phot. dispersion in G+G_BP+G_RP of the 145 677 450 Gaia DR3 5-parameter sources with G <= 17 mag and…

Solar and Stellar Astrophysics · Physics 2023-09-20 J. Maíz Apellániz , G. Holgado , M. Pantaleoni González , J. A. Caballero

This paper surveys uncertainty-aware explainable artificial intelligence (UAXAI), examining how uncertainty is incorporated into explanatory pipelines and how such methods are evaluated. Across the literature, three recurring approaches to…

Artificial Intelligence · Computer Science 2026-03-31 Helena Löfström , Tuwe Löfström , Anders Hjort , Fatima Rabia Yapicioglu

The {\Gaia} astrometric mission was approved by the European Space Agency in 2000 and the construction of the spacecraft and payload is on-going for a launch in late 2012. {\Gaia} will continuously scan the entire sky for 5 years, yielding…

Instrumentation and Methods for Astrophysics · Physics 2011-06-01 C. Jordi

Precision astrometry from the second Gaia data release has allowed astronomers to predict 5,787 microlensing events, with 528 of these having maximums within the extended Gaia mission (J2014.5 - J2026.5). Future analysis of the Gaia…

Solar and Stellar Astrophysics · Physics 2020-07-08 Peter McGill , Andrew Everall , Douglas Boubert , Leigh Smith

In this paper, we present the computational task-management tool Ganga, which allows for the specification, submission, bookkeeping and post-processing of computational tasks on a wide set of distributed resources. Ganga has been developed…

Besides its major objective tuned to the detection of the stellar galactic population the Gaia mission experiment will also observe a large number of galaxies. In this work we intend to evaluate the number and the characteristics of the…

General importance and capabilities of observations of eclipsing binaries by the forthcoming ESA mission GAIA are discussed. Availability of spectroscopic observations and a large number of photometric bands on board will make it possible…

Astrophysics · Physics 2007-05-23 Tomaz Zwitter

Very High Resolution satellite and aerial imagery are used to monitor and conduct large scale surveys of ecological systems. Convolutional Neural Networks have successfully been employed to analyze such imagery to detect large animals and…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-10-29 Aymen Al-Saadi , Ioannis Paraskevakos , Bento Collares Gonçalves , Heather J. Lynch , Shantenu Jha , Matteo Turilli

The automation system for Course of Action (CoA) planning is an essential element in future warfare. As maneuver speeds increase, surveillance ranges extend, and weapon ranges grow, the operational area expands, making traditional…

Artificial Intelligence · Computer Science 2026-04-24 Ji-il Park , Inwook Shim , Chong Hui Kim

The astrometric space mission Gaia is expected to detect a large number of brown dwarf binary systems with close orbits and determine astrometric orbit solutions. This will provide key information for the formation and evolution of brown…

Solar and Stellar Astrophysics · Physics 2014-07-30 V. Joergens , S. Reffert

This document presents a preliminary compilation of general-purpose AI (GPAI) evaluation practices that may promote internal validity, external validity and reproducibility. It includes suggestions for human uplift studies and benchmark…

Computers and Society · Computer Science 2025-08-20 Patricia Paskov , Michael J. Byun , Kevin Wei , Toby Webster