J
J. L. Williams
Researcher at University of Maryland, College Park
Publications - 3
Citations - 513
J. L. Williams is an academic researcher from University of Maryland, College Park. The author has contributed to research in topics: Coma & Comet. The author has an hindex of 3, co-authored 3 publications receiving 456 citations.
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Journal ArticleDOI
EPOXI at Comet Hartley 2
Michael F. A'Hearn,M. J. S. Belton,W. Alan Delamere,Lori M. Feaga,Donald Hampton,Jochen Kissel,Kenneth P. Klaasen,Lucy A. McFadden,Lucy A. McFadden,Karen J. Meech,H. Jay Melosh,H. Jay Melosh,Peter H. Schultz,Jessica M. Sunshine,Peter C. Thomas,Joseph Veverka,Dennis D. Wellnitz,Donald K. Yeomans,Sebastien Besse,Dennis Bodewits,Timothy J. Bowling,Brian Carcich,Steven M. Collins,Tony L. Farnham,Olivier Groussin,Brendan Hermalyn,Michael S. P. Kelley,Jian-Yang Li,Don J. Lindler,Carey M. Lisse,S. McLaughlin,Frederic Merlin,Frederic Merlin,Silvia Protopapa,James E. Richardson,J. L. Williams +35 more
TL;DR: In situ observations show that comet Hartley 2 is an unusually hyperactive comet, and this nucleus is outgassing primarily because of CO2, which drags chunks of ice out of the nucleus.
Journal ArticleDOI
The complex spin state of 103P/Hartley 2: Kinematics and orientation in space
Michael J. S. Belton,Peter C. Thomas,Jian-Yang Li,J. L. Williams,Brian Carcich,Michael F. A'Hearn,S. McLaughlin,Tony L. Farnham,Lucy A. McFadden,Carey M. Lisse,Steven M. Collins,Sebastien Besse,Kenneth P. Klaasen,Jessica M. Sunshine,Karen J. Meech,Don J. Lindler +15 more
TL;DR: In this article, the authors derived the spin state of the nucleus of Comet 103P/Hartley 2, its orientation in space, and its short-term temporal evolution from a mixture of observations taken from the DIXI (Deep Impact Extended Investigation) spacecraft and radar observations.