Zobrazeno 1 - 10
of 260
pro vyhledávání: '"Gregory A Neumann"'
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 11, p 204 (2023)
The lunar gravity field is used to estimate and constrain the depth of mass anomalies under 19 major lunar impact basins. We use radial gravitational spectra, consisting of accelerations computed either per spherical harmonic degree or cumulatively,
Externí odkaz:
https://doaj.org/article/52f309a70f4d4b9ab170f167cb453e60
Autor:
Erwan Mazarico, Xiaoli Sun, Jean-Marie Torre, Clément Courde, Julien Chabé, Mourad Aimar, Hervé Mariey, Nicolas Maurice, Michael K. Barker, Dandan Mao, Daniel R. Cremons, Sébastien Bouquillon, Teddy Carlucci, Vishnu Viswanathan, Frank G. Lemoine, Adrien Bourgoin, Pierre Exertier, Gregory A. Neumann, Maria T. Zuber, David E. Smith
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-14 (2020)
Abstract We present the results of the first series of successful two-way laser ranging experiments from a ground station, the Lunar Laser Ranging (LLR) station in Grasse, France, to a spacecraft at lunar distance, the Lunar Reconnaissance Orbiter (L
Externí odkaz:
https://doaj.org/article/45c3c98a7cdb44038120172781e76504
Autor:
Antonio Genova, Erwan Mazarico, Sander Goossens, Frank G. Lemoine, Gregory A. Neumann, David E. Smith, Maria T. Zuber
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
The NASA MESSENGER mission collected a rich dataset enabling determination of Mercury’s ephemeris. Here, the authors analyse MESSENGER data obtained over an extended period of time to quantify parameters related to General Relativity.
Externí odkaz:
https://doaj.org/article/6f9fb2beee85415ab49f615959ece1c7
Autor:
Hyung-Chul Lim, Gregory A. Neumann, Myeong-Hwan Choi, Sung-Yeol Yu, Seong-Cheol Bang, Neung-Hyun Ka, Jong-Uk Park, Man-Soo Choi, Eunseo Park
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 33, Iss 3, Pp 211-219 (2016)
Korea’s lunar exploration project includes the launching of an orbiter, a lander (including a rover), and an experimental orbiter (referred to as a lunar pathfinder). Laser altimeters have played an important scientific role in lunar, planetary, a
Externí odkaz:
https://doaj.org/article/85d49c7cb0084957b39f098840a5940a
Autor:
Xiaoli Sun, James B. Abshire, Jan F. McGarry, Gregory A. Neumann, James C. Smith, John F. Cavanaugh, David J. Smith, H. Jay Zwally, David E. Smith, Maria T. Zuber
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 6, Iss 3, Pp 1660-1675 (2013)
During the past 20 years the NASA Goddard Space Flight Center has developed five different lidar for space, and has successfully used them in orbital missions to map Mars, the Earth, the Moon and Mercury. Although similar in some ways, each of these
Externí odkaz:
https://doaj.org/article/5261c9a9dc614273acad5bcd31b3e7c9
Autor:
Antonio Genova, David E. Smith, Robin Canup, Terry Hurford, Sander Goossens, Erwan Mazarico, Gregory A. Neumann, Maria T. Zuber, Francis Nimmo, Mark Wieczorek, Edward Bierhaus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0fc04ee01da8f4b2b78dc3ec0a96742
https://hdl.handle.net/11573/1629997
https://hdl.handle.net/11573/1629997
Autor:
James W. Head, T. P. McClanahan, Erwan Mazarico, Xiaoli Sun, David E. Smith, Michael K. Barker, Maria T. Zuber, Gregory A. Neumann
Publikováno v:
Journal of Geophysical Research: Planets. 124:2728-2744
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::944b8257b4026ed6103ce5459b1b4d21
https://doi.org/10.1029/2019je006020
https://doi.org/10.1029/2019je006020
Publikováno v:
Earth Planet Sci Lett
Surface ice at the poles of Mercury appears as several-m-thick deposits that are composed of nearly pure water. We provide new age estimates of the surfaces of Mercury's polar deposits from combined analyses of Poisson statistics and direct observati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::073f654f9907909d59ed2b62c3a595d1
https://doi.org/10.1016/j.epsl.2019.05.027
https://doi.org/10.1016/j.epsl.2019.05.027
Autor:
David E. Smith, Vishnu Viswanathan, Erwan Mazarico, Sander Goossens, James W. Head, Gregory A. Neumann, Maria T. Zuber
Publikováno v:
The Planetary Science Journal. 3:217
Changes in mass distribution affect the gravitational figure and reorient a planetary body’s surface with respect to its rotational axis. The mass anomalies in the present-day lunar gravity field can reveal how the figure and pole position have evo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73df2e3132f71076edb5b173dd81e311
https://doi.org/10.3847/psj/ac8c39
https://doi.org/10.3847/psj/ac8c39
Autor:
James W. Head, Ariel N. Deutsch, Stephen W. Parman, Lionel Wilson, Finnian Lowden, Gregory A. Neumann
The surface of Mercury is dominated by extensive, widespread lava plains that formed early in its history. The emplacement of these lavas was accompanied by the release of magmatic volatiles, the bulk of which were lost to space via thermal escape an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::323eaea08cb5bfe1aab461936705949d
https://doi.org/10.1016/j.epsl.2021.116907
https://doi.org/10.1016/j.epsl.2021.116907