2026 Michael F. A'Hearn: Physics Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	National Ranking	Publications	Citations
Physics	95	1942	1006	782	30417

Discipline name

D-Index

World Ranking

National Ranking

Publications

Citations

Physics

1942

1006

782

30417

Overview

Michael F. A'Hearn was affiliated with the University of Maryland, College Park in the United States. Their research contributions primarily spanned the fields of Physics and Astronomy as well as Environmental Science, with a particular focus on Astronomy and Astrophysics and Ecology at the subfield level.

The main areas of study in which they were involved included Astro and Planetary Science, Isotope Analysis in Ecology, Stellar, planetary, and galactic studies, and Planetary Science and Exploration.

A'Hearn's recent published work appeared in The Astronomical Journal, with two papers dated 2021. These papers were entitled "Analysis of Hybrid Gas-Dust Outbursts Observed at 67P/Churyumov-Gerasimenko" and "Spatial Distribution of Ultraviolet Emission from Cometary Activity at 67P/Churyumov-Gerasimenko," both reflecting research on cometary phenomena.

Analysis of Hybrid Gas-Dust Outbursts Observed at 67P/Churyumov-Gerasimenko, 2021, The Astronomical Journal
Spatial Distribution of Ultraviolet Emission from Cometary Activity at 67P/Churyumov-Gerasimenko, 2021, The Astronomical Journal

Frequent collaborators with A'Hearn included John W. Noonan, P. D. Feldman, S. A. Stern, J. W. Parker, and Brian A. Keeney. This indicates a consistent pattern of joint research efforts primarily focused on planetary science topics.

John W. Noonan
P. D. Feldman
S. A. Stern
J. W. Parker
Brian A. Keeney

The venue that featured most of their recent publications was The Astronomical Journal, with multiple publications appearing there.

The Astronomical Journal

Best Publications

The Ensemble Properties of Comets: Results from Narrowband Photometry of 85 Comets, 1976-1992

Michael F. A'Hearn;Robert C. Millis;David O. Schleicher;David J. Osip

1033
Citations
Comet Bowell 1980b

M. F. A'Hearn;D. G. Schleicher;R. L. Millis;P. D. Feldman

807
Citations
On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko

Holger Sierks;Cesare Barbieri;Philippe L. Lamy;Rafael Rodrigo;Rafael Rodrigo

511
Citations
EPOXI at Comet Hartley 2

Michael F. A’Hearn;Michael J. S. Belton;W. Alan Delamere;Lori M. Feaga

492
Citations
Report of the IAU Working Group on Cartographic Coordinates and Rotational Elements: 2009

B. A. Archinal;M. F. A’Hearn;E. Bowell;A. Conrad

487
Citations
OSIRIS – The Scientific Camera System Onboard Rosetta

H. U. Keller;C. Barbieri;P. Lamy;H. Rickman

414
Citations
Spitzer Spectral Observations of the Deep Impact Ejecta

C. M. Lisse;C. M. Lisse;J. VanCleve;A. C. Adams;M. F. A'Hearn

381
Citations
Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the Sun

Alessandra Rotundi;Alessandra Rotundi;Holger Sierks;Vincenzo Della Corte;Marco Fulle

362
Citations
The morphological diversity of comet 67P/Churyumov-Gerasimenko

Nicolas Thomas;Holger Sierks;Cesare Barbieri;Philippe L. Lamy

352
Citations
Studies of proton-irradiated cometary-type ice mixtures

Marla H. Moore;Marla H. Moore;Bertram Donn;Bertram Donn;Raj Khanna;Raj Khanna;Michael F. A'Hearn;Michael F. A'Hearn

351
Citations
The global shape, density and rotation of Comet 67P/Churyumov-Gerasimenko from preperihelion Rosetta/OSIRIS observations

Laurent Jorda;R. Gaskell;C. Capanna;S. Hviid

340
Citations
Report of the IAU/IAG Working Group on cartographic coordinates and rotational elements: 2006

P. Kenneth Seidelmann;B. A. Archinal;M. F. A’hearn;A. Conrad

336
Citations
Cyanogen jets in comet Halley

Michael F. A'Hearn;Susan Hoban;Peter V. Birch;Craig Bowers

315
Citations
Earth as an Extrasolar Planet: Earth Model Validation Using EPOXI Earth Observations

Tyler D. Robinson;Victoria S. Meadows;David Crisp;Drake Deming

261
Citations
Shape model, reference system definition, and cartographic mapping standards for comet 67P/Churyumov-Gerasimenko Stereo-photogrammetric analysis of Rosetta/OSIRIS image data

Frank Preusker;F. Scholten;K.-D. Matz;Thomas Roatsch

255
Citations
Report of the IAU Working Group on Cartographic Coordinates and Rotational Elements: 2015

Brent Archinal;C. H. Acton;M. F. A’Hearn;A. Conrad

242
Citations
Insolation, erosion, and morphology of comet 67P/Churyumov-Gerasimenko

H. U. Keller;S. Mottola;B. Davidsson;S.E. Schröder

242
Citations
Alien Maps of an Ocean-Bearing World

Nicolas B. Cowan;Eric Agol;Victoria S. Meadows;Victoria S. Meadows;Tyler Robinson;Tyler Robinson

230
Citations
The fluorescence of cometary OH

David G. Schleicher;Michael F. A'Hearn

221
Citations
Deep Impact: excavating comet Tempel 1

Michael F. A'Hearn

60
Citations