6 papers
Periodic Wobble of the Post-Perihelion Jet Structure Around 3I/ATLAS
Toni Scarmato, Abraham Loeb
We analyse data on the post-perihelion morphology, including jet position angles (PAs) and coma dominated photometry of the interstellar object 3I/ATLAS. From Hubble Space Telescop…
Linking System of Jets to the Non-Gravitational Acceleration of 3I/ATLAS
Toni Scarmato, Abraham Loeb
Building on the jet morphology and periodic wobble analysis of 3I/ATLAS in Scarmato & Loeb (2026), we link observed jet position angles (PAs) and the non-gravitational acceleration…
Rotation Period of 3I/ATLAS After Perihelion from Jet Position Angle Wobble and Photometric Variability
Toni Scarmato, Abraham Loeb
We determine the post-perihelion rotation period of 3I/ATLAS using two independent diagnostics: the temporal modulation of the position angle (PA) of a persistent jet-like feature,…
Interstellar Interloper 3I/ATLAS: Nucleus Size, Photometry in RGB, Af(rho) and Antitail Structure Analysis
Toni Scarmato
Interstellar comet 3I/ATLAS (C/2025 N1) exhibits an unusual, tightly collimated dust feature in the sunward hemisphere which has been widely described as an anti-tail. At the same…
Measuring Cometary Nuclei Behind Bright Comae: PSF Delta Decomposition with Bicubic Resampling and an Application to Interstellar Comet 3I/ATLAS C/2025 N1
Toni Scarmato
Measuring cometary nuclei is notoriously difficult because they are usually unresolved and embedded within bright comae, which hampers direct size measurements even with space tele…
TIC 393818343 c: Discovery and characterization of a Neptune-like planet in the Delphinus constellation
G. Conzo, N. Leiner, K. Lynch +3
We report on the statistical confirmation of a second planet inside the TIC 393818343 system. The first planet TIC 393818343 b has been confirmed and classified as a Warm Jupiter p…