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researcher

A. Penttilä

19 papers hereh-index 221.7k citations160 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • middle author14
  • last author2

Across the 16 of 19 papers where every author was matched, so the position is known.

fields
  • astro-ph.EP17
  • astro-ph.GA1
  • cond-mat.mtrl-sci1

identity via Semantic Scholar / OpenAlex

activity
20122026
most citedGaia Early Data Release 3: Acceleration of the solar system from Gaia astrometry

112 citations · 546 across the 18 of their papers we have counts for

collaborators
Showing 2026Show all

3 papers · 1 filter

astro-ph.EP2026

Experimental evidence for physical alteration of fine regolith on near-Sun asteroids

Jooyeon Geem, Mikael Granvik, Georgios Tsirvoulis +5

The surfaces of airless bodies evolve through processes such as (micro)meteoroid impacts and thermal fatigue, which modify physical properties such as grain size, porosity, and min…

astro-ph.EP2026

Multi-Wavelength Post-Perihelion Polarimetry of Interstellar Comet 3I/ATLAS

Zuri Gray, Galin Borisov, Ludmilla Kolokolova +15

We present new post-perihelion polarimetric observations of the third discovered interstellar object, 3I/ATLAS (C/2025 N1; hereafter 3I), obtained using FORS2 at the Very Large Tel…

astro-ph.EP2026

The Inbound Gas and Dust Evolution of Interstellar Comet 3I/ATLAS from Optical Spectroscopy and Multi-band Photometry

Toni Santana-Ros, Alexey Sergeyev, Oleksandra Ivanova +9

Interstellar objects (ISOs) provide direct constraints on the composition and evolution of extrasolar planetary systems. As the third confirmed ISO, comet 3I/ATLAS offers a rare op…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.