activity
20022026
most citedGRB 080913 at redshift 6.7

220 citations · 3.8k across the 111 of their papers we have counts for

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98 papers · 1 filter

astro-ph.EP2026

TOI-6981 b: a transiting sub-Neptune at the water ice line

Madison G. Scott, Amaury H. M. J Triaud, Emily K. Pass +42

We present TOI-6981 b, a cold (Teq= 170.0 +/-4.5 K, assuming an Earth-like albedo) sub-Neptune (Rb=2.40+/-0.10 R_oplus) on a 60.8 day orbit around around its M4-type host star (R*=…

astro-ph.EP2026

Post-perihelion Photometric and Spectroscopic Monitoring of the Interstellar Comet 3I/ATLAS

Goldy Ahuja, Shashikiran Ganesh, K. Aravind +12

The third interstellar object, comet 3I/ATLAS, was observed using various Indian telescopes during its post-perihelion evolution. We carried out imaging and spectroscopic observati…

astro-ph.EP2026

IFU Observations of Comet 3I/ATLAS = C/2025 N1 (ATLAS) using the Hobby-Eberly Telescope with the VIRUS Instrument

Anita Cochran, Gregory Zeimann, Emmanuel Jehin +2

We observed interstellar object 3I/ATLAS = C/2025 N1 (ATLAS) on 9 December 2025 UT with the VIRUS spectrograph on the Hobby-Eberly Telescope. VIRUS is a low spectral resolving powe…

astro-ph.EP2026

Assessing the Impact of High-Resolution Imaging on Statistical Validation of TESS Planet Candidates

Michael Collier, Steven Giacalone, Brian Derfer +38

High-resolution imaging is widely used to constrain false-positive scenarios in exoplanet validation, but it is a finite follow-up resource that reaches only a subset of candidates…

astro-ph.EP2026

Unmasking (44) Nysa: Evidence for a trilobate structure

Kate Minker, Anthony Berdeu, Gianluca Li Causi +16

Context. (44) Nysa is one of the largest known E-type asteroids. Light curve inversion models have indicated that it may have an elongated shape commonly found in large binary syst…

astro-ph.EP2026

Stellar Multiplicity of M Dwarfs with Short-period Giant Planets, and the Characterization of TOI-5628Ab

Tianjun Gan, Alexandrine L'Heureux, Charles Cadieux +33

Binary stars are ubiquitous, yet it remains unclear how wide-orbit stellar companions influence the formation of hot Jupiters, particularly around M dwarfs. Here, we first report t…

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.EP2026★ 1 cited

ASTEP confirmation of a pair of long-period Jupiter-sized planets with extremely low densities transiting TOI-791

Georgina Dransfield, Antoine C. Petit, Amaury H. M. J. Triaud +45

Gas giant planets with periods orbiting Sun-like stars are a relatively uncommon outcome of planetary formation, and key questions about the nature and form…

astro-ph.EP2026

TOI-7169 b: A Hot Jupiter Transiting a Metal-Poor Star

Joshua D. Simon, Joseph E. Rodriguez, Jhon Yana Galarza +38

Most known planets are found around metal-rich host stars, which has made it difficult to determine whether a lower metallicity limit for planet formation exists and how the proper…

astro-ph.EP2026

TOI-6692b: An eccentric 130 day period giant planet with a single transit from TESS

Allyson Bieryla, Karen A. Collins, George Zhou +46

We report the discovery and characterization of TOI-6692 b, an eccentric (e~0.54) Jupiter on a 130-day orbit. TOI-6692 b was first detected as a community TESS Object of Interest (…

astro-ph.EP2026

Two temperate Earth- and Neptune-sized planets orbiting fully convective M dwarfs

Madison G. Scott, Georgina Dransfield, Mathilde Timmermans +30

As the diversity of exoplanets continues to grow, it is important to revisit assumptions about habitability and classical HZ definitions. In this work, we introduce an expanded 'te…

astro-ph.EP2025★ 2 cited

TOI-7166 b: A Habitable Zone mini-Neptune planet around a nearby low-mass star

Khalid Barkaoui, Francisco J. Pozuelos, Benjamin V. Rackham +41

We present the discovery and validation of TOI-7166b, a 2.01+/-0.05R_Earth planet orbiting a nearby low-mass star. We validated the planet by combining TESS and multi-color high-pr…

astro-ph.EP2025

TESS Investigation -- Demographics of Young Exoplanets (TI-DYE) IV: a Jovian radius planet orbiting a 34 Myr Sun-like star in the Vela association

Madyson G. Barber, Andrew W. Mann, Andrew Vanderburg +17

The discovery of infant (< 50 Myr), close-in (<30-day period) planets is vital in understanding the formation mechanisms that lead to the distribution of mature transiting planets…

astro-ph.EP2025

NGTS-11 c: a transiting Neptune-mass planet interior to the warm Saturn NGTS-11 b

David R. Anderson, Jose I. Vines, Katharine Hesse +56

We report the discovery of NGTS-11 c, a transiting warm Neptune ( d; ; ), in an…

astro-ph.EP2025★ 14 cited

Catastrophic disruption of asteroid 2023 CX1 and implications for planetary defense

Auriane Egal, Denis Vida, François Colas +94

Mitigation of the threat from airbursting asteroids requires an understanding of the potential risk they pose for the ground. How asteroids release their kinetic energy in the atmo…

astro-ph.EP2025★ 3 cited

Long-term monitoring of a dynamically new comet C/2020 V2 (ZTF)

Goldy Ahuja, K. Aravind, Shashikiran Ganesh +5

Comet C/2020 V2 (ZTF) is categorized as a dynamically new long-period comet, making its first approach to the inner Solar system. We have observed this comet for around 32 months (…

astro-ph.EP2025★ 1 cited

Discovery and Preliminary Characterization of a Third Interstellar Object: 3I/ATLAS

Darryl Z. Seligman, Marco Micheli, Davide Farnocchia +44

We report initial observations aimed at the characterization of a third interstellar object. This object, 3I/ATLAS or C/2025 N1 (ATLAS), was discovered on 2025 July 1 UT and has an…

astro-ph.EP2025

Snapshot of a new interstellar comet: 3I/ATLAS has a red and featureless spectrum

Cyrielle Opitom, Colin Snodgrass, Emmanuel Jehin +19

The interstellar comet 3I/ATLAS is only the third interstellar object to be discovered. Pre-perihelion measurements provide a unique opportunity to study its activity and compositi…

astro-ph.EP2025

A portrait throughout perihelion of the NH-rich interstellar comet 2I/Borisov

Sophie E. Deam, Michele T. Bannister, Cyrielle Opitom +12

The interstellar comet 2I/Borisov is the first interstellar object where compositional characterisation was possible throughout its entire perihelion passage. We report all 16 epoc…

astro-ph.EP2025

A Large Outburst, Coma Asymmetries, and the Color of Comet 243P/NEAT

Michael S. P. Kelley, Silvia Protopapa, Dennis Bodewits +16

Water ice is a fundamental building material of comets and other bodies in the outer solar system. Yet, the properties of cometary water ice are challenging to study, due to its vo…

astro-ph.EP2025★ 10 cited

A transiting giant planet in orbit around a 0.2-solar-mass host star

Edward M. Bryant, Andrés Jordán, Joel D. Hartman +56

Planet formation models suggest that the formation of giant planets is significantly harder around low-mass stars, due to the scaling of protoplanetary disc masses with stellar mas…

astro-ph.EP2025★ 1 cited

A Swarm of WASP Planets: Nine giant planets identified by the WASP survey

Nicole Schanche, Guillaume Hébrard, Keivan G. Stassun +52

The Wide Angle Search for Planets (WASP) survey provided some of the first transiting hot Jupiter candidates. With the addition of the Transiting Exoplanet Survey Satellite (TESS),…

astro-ph.EP2025★ 1 cited

Orbits of very distant asteroid satellites

K. Minker, B. Carry, F. Vachier +36

The very wide binary asteroid (VWBA) population is a small subset of the population of known binary and multiple asteroids made of systems with very widely orbiting satellites and…

astro-ph.EP2025

Dust shells and dark linear structures on dust tails of historical and recent long-period comets

Fernando Moreno, Emmanuel Jehin

Context. Dust halos or shells, along with linear dark structures along the axes of dust tails, are commonly observed in many long-period comets near perihelion. Examples range from…