activity
20162026
most citedEffects of disc asymmetries on astrometric measurements - Can they mimic planets?

11 citations · 30 across the 9 of their papers we have counts for

collaborators

10 papers

astro-ph.EP2026

Size, shape, density, and atmospheric limit of (50000) Quaoar revealed from 14 years of stellar occultation

Giuliano Margoti, Felipe Braga-Ribas, José Luis Ortiz +173

We present results from 28 stellar occultations by the large Trans-Neptunian Object (50000) Quaoar registered between 2018 and 2025. By performing a joint analysis of this occultat…

astro-ph.EP2025★ 8 cited

Rings around irregular bodies I. Structure of the resonance mesh, applications to Chariklo, Haumea and Quaoar

Bruno Sicardy, Heikki Salo, Maryame El Moutamid +2

Three ring systems have been discovered to date around small irregular objects of the solar system (Chariklo, Haumea and Quaoar). For the three bodies, material is observed near th…

astro-ph.EP2025★ 1 cited

JWST occultation reveals unforeseen complexity in Chariklo's ring system

Pablo Santos-Sanz, Altair R. Gomes-Júnior, Bruno E. Morgado +25

Ring systems have been discovered around several small bodies in the outer Solar System through stellar occultations. While such measurements provide key information about ring geo…

astro-ph.EP2025

Cometary Observations in Light-Polluted Environments: A case study of Interstellar Comet 2I/Borisov

Josep M. Trigo-Rodríguez, Damya Souami, Maria Gritsevich +2

Comets and asteroids have long captured human curiosity, and until recently, all documented examples belonged to our Solar System. That changed with the discovery of the first know…

astro-ph.EP2024

Origins of rings in the solar system

Bruno Sicardy, Maryame El Moutamid, Stefan Renner +2

Until about a decade ago, ring systems were only known to exist around giant planets. Each one of the four giant planets harbours its own distinctive and unique system of rings and…

astro-ph.HE2023★ 1 cited

A magnetar giant flare in the nearby starburst galaxy M82

Sandro Mereghetti, Michela Rigoselli, Ruben Salvaterra +32

Giant flares, short explosive events releasing up to 10 erg of energy in the gamma-ray band in less than one second, are the most spectacular manifestation of magnetars, you…

astro-ph.EP2023

Earth-based Stellar Occultation Predictions for Jupiter, Saturn, Uranus, Neptune, Titan, and Triton: 2023-2050

Richard G. French, Damya Souami

In support of studies of decadal-timescale evolution of outer solar system atmospheres and ring systems, we present detailed Earth-based stellar occultation predictions for Jupiter…

astro-ph.EP2022

After DART: Using the first full-scale test of a kinetic impactor to inform a future planetary defense mission

Thomas S. Statler, Sabina D. Raducan, Olivier S. Barnouin +38

NASA's Double Asteroid Redirection Test (DART) is the first full-scale test of an asteroid deflection technology. Results from the hypervelocity kinetic impact and Earth-based obse…

astro-ph.EP2020★ 9 cited

On the local and global properties of the gravitational spheres of influence

D. Souami, J. Cresson, C. Biernacki +1

We revisit the concept of sphere of gravitational activity, to which we give both a geometrical and physical meaning. This study aims to refine this concept in a much broader conte…

astro-ph.EP2016★ 11 cited

Effects of disc asymmetries on astrometric measurements - Can they mimic planets?

Quentin Kral, Jean Schneider, Grant Kennedy +1

Astrometry covers a parameter space that cannot be reached by RV or transit methods to detect terrestrial planets on wide orbits. In addition, high accuracy astrometric measurement…