Zobrazeno 1 - 10
of 370
pro vyhledávání: '"Williams, James G."'
The transformation of time between the surface of the Earth, the solar system barycenter, and the surface of the Moon involves relativistic corrections. For solar system Barycentric Dynamical Time (TDB), we also require that there be no rate differen
Externí odkaz:
http://arxiv.org/abs/2406.16147
Autor:
Matsuyama, Isamu, Nimmo, Francis, Keane, James T., Chan, Ngai H., Taylor, G. Jeffrey, Wieczorek, Mark A., Kiefer, Walter S., Williams, James G.
The interior structure of the Moon is constrained by its mass, moment of inertia, and k(2) and h(2) tidal Love numbers. We infer the likely radius, density, and (elastic limit) rigidity of all interior layers by solving the inverse problem using thes
Externí odkaz:
http://hdl.handle.net/10150/621595
http://arizona.openrepository.com/arizona/handle/10150/621595
http://arizona.openrepository.com/arizona/handle/10150/621595
Autor:
Viswanathan, Vishnu, Mazarico, Erwan, Merkowitz, Stephen, Williams, James G., Turyshev, Slava G., Currie, Douglas G., Ermakov, Anton I., Rambaux, Nicolas, Fienga, Agnès, Courde, Clément, Chabé, Julien, Torre, Jean-Marie, Bourgoin, Adrien, Schreiber, Ulrich, Eubanks, Thomas M., Wu, Chensheng, Dequal, Daniele, Dell'Agnello, Simone, Biskupek, Liliane, Müller, Jürgen, Kopeikin, Sergei
Publikováno v:
Bulletin of the AAS (2021), 53(4)
The Lunar Laser Ranging (LLR) experiment has accumulated 50 years of range data of improving accuracy from ground stations to the laser retroreflector arrays (LRAs) on the lunar surface. The upcoming decade offers several opportunities to break new g
Externí odkaz:
http://arxiv.org/abs/2008.09584
Publikováno v:
Celestial Mechanics and Dynamical Astronomy 126(1), 61-88 (2016)
The aim of this work is to combine the model of orbital and rotational motion of the Moon developed for DE430 with up-to-date astronomical, geodynamical, and geo- and selenophysical models. The parameters of the orbit and physical libration are deter
Externí odkaz:
http://arxiv.org/abs/1606.08376
Autor:
Kaplan, George H., Bangert, John A., Fienga, Agnes, Folkner, William, Hohenkerk, Catherine, Lukashova, Marina, Pitjeva, Elena V., Seidelmann, P. Kenneth, Sveshnikov, Michael, Urban, Sean, Vondrak, Jan, Weratschnig, Julia, Williams, James G.
As part of a reorganization of the International Astronomical Union (IAU), Commission 4 (Ephemerides) went out of existence after the IAU General Assembly in August 2015. This paper presents brief discussions of some of the developments in fundamenta
Externí odkaz:
http://arxiv.org/abs/1511.01546
Akademický článek
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Autor:
Turyshev, Slava G., Williams, James G., Folkner, William M., Gutt, Gary M., Baran, Richard T., Hein, Randall C., Somawardhana, Ruwan P., Lipa, John A., Wang, Suwen
Publikováno v:
Experimental Astronomy 36(1), 105-135 (2013)
Lunar laser ranging (LLR) has made major contributions to our understanding of the Moon's internal structure and the dynamics of the Earth-Moon system. Because of the recent improvements of the ground-based laser ranging facilities, the present LLR m
Externí odkaz:
http://arxiv.org/abs/1210.7857
Autor:
Williams, James G., Efroimsky, Michael
Publikováno v:
Celestial Mechanics & Dynamical Astronomy, Vol. 114, pp. 387 - 414 (2012)
Spin-orbit coupling is often described in the "MacDonald torque" approach which has become the textbook standard. Within this method, a concise expression for the additional tidal potential, derived by MacDonald (1964; Rev. Geophys. 2, 467), is combi
Externí odkaz:
http://arxiv.org/abs/1210.2923
Publikováno v:
Class. Quantum Grav. 29 (2012) 184004
The Lunar Laser Ranging (LLR) experiment provides precise observations of the lunar orbit that contribute to a wide range of science investigations. In particular, time series of highly accurate measurements of the distance between the Earth and Moon
Externí odkaz:
http://arxiv.org/abs/1203.2150
Autor:
Turyshev, Slava G., Farr, William, Folkner, William M., Girerd, Andre R., Hemmati, Hamid, Murphy, Jr., Thomas W., Williams, James G., Degnan, John J.
Publikováno v:
Experimental Astronomy 28, 209-249 (2010)
Phobos Laser Ranging (PLR) is a concept for a space mission designed to advance tests of relativistic gravity in the solar system. PLR's primary objective is to measure the curvature of space around the Sun, represented by the Eddington parameter $\g
Externí odkaz:
http://arxiv.org/abs/1003.4961