Results 11 to 20 of about 1,952 (128)

CHAOTIC DIFFUSION OF RESONANT KUIPER BELT OBJECTS [PDF]

The Astronomical Journal, 2009
We carried out extensive numerical orbit integrations to probe the long-term chaotic dynamics of the two strongest mean motion resonances of Neptune in the Kuiper belt, the 3:2 (Plutinos) and 2:1 (Twotinos). Our primary results include a computation of the relative volumes of phase space characterized by large- and small-resonance libration amplitudes,
Tiscareno, Matthew S., Malhotra, Renu
openaire   +2 more sources

The drag-induced resonant capture for Kuiper Belt objects [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
It has been an interesting question that why there are one-third of Kuiper Belt Objects (KBOs) trapped into the 3:2 resonance but, in contrast, only several KBOs are claimed to be associated with the 2:1 resonance. In a model proposed by Zhou et al. (2002), the stochastic outward migration of the Neptune could reduce the number of particles in the 2:1 ...
Jiang, Ing-Guey, Yeh, Li-Chin
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CORRALLING A DISTANT PLANET WITH EXTREME RESONANT KUIPER BELT OBJECTS [PDF]

The Astrophysical Journal Letters, 2016
ABSTRACT The four longest period Kuiper Belt objects have orbital periods close to integer ratios with each other. A hypothetical planet with an orbital period of ∼17,117 years and a semimajor axis ∼665 au would have N/1 and N/2 period ratios with these four objects.
Renu Malhotra, Kathryn Volk, Xianyu Wang
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Grounded Cognition Entails Linguistic Relativity: A Neglected Implication of a Major Semantic Theory

Topics in Cognitive Science, Volume 15, Issue 4, Page 615-647, October 2023., 2023
Abstract According to the popular Grounded Cognition Model (GCM), the sensory and motor features of concepts, including word meanings, are stored directly within neural systems for perception and action. More precisely, the core claim is that these concrete conceptual features reuse some of the same modality‐specific representations that serve to ...
David Kemmerer
wiley   +1 more source

Compositions and Interior Structures of the Large Moons of Uranus and Implications for Future Spacecraft Observations

Journal of Geophysical Research: Planets, Volume 128, Issue 1, January 2023., 2023
Abstract The five large moons of Uranus are important targets for future spacecraft missions. To motivate and inform the exploration of these moons, we model their internal evolution, present‐day physical structures, and geochemical and geophysical signatures that may be measured by spacecraft.
Julie Castillo‐Rogez, Benjamin Weiss, Chloe Beddingfield, John Biersteker, Richard Cartwright, Allison Goode, Mohit Melwani Daswani, Marc Neveu   +7 more
wiley   +1 more source

A Climatology of Long‐Duration High 2‐MeV Electron Flux Periods in the Outer Radiation Belt

Journal of Geophysical Research: Space Physics, Volume 127, Issue 8, August 2022., 2022
Abstract Since the advent of the Space Age, the importance of understanding and forecasting relativistic electron fluxes in the Earth’s radiation belts has been steadily growing due to the threat that such particles pose to satellite electronics. Here, we provide a model of long‐duration periods of high time‐integrated 2‐MeV electron flux deep inside ...
D. Mourenas, O. V. Agapitov, A. V. Artemyev, X.‐J. Zhang   +3 more
wiley   +1 more source

Ceres’ Broad‐Scale Surface Geomorphology Largely Due To Asymmetric Internal Convection

AGU Advances, Volume 3, Issue 3, June 2022., 2022
Abstract While we now know much about the volatile‐rich world of Ceres from the Dawn mission, the deep interior remains something of an enigma, shrouded by a crust composed of water ice, carbonates, phyllosilicates, salts and clathrate hydrates. While smaller than most active moons or planets, Ceres has many features commonly associated with active ...
Scott D. King, Michael T. Bland, Simone Marchi, Carol A. Raymond, Christopher T. Russell, Jennifer E. C. Scully, Hanna G. Sizemore   +6 more
wiley   +1 more source

The Geophysical Environment of (486958) Arrokoth—A Small Kuiper Belt Object Explored by New Horizons

Journal of Geophysical Research: Planets, Volume 127, Issue 6, June 2022., 2022
Abstract NASA's New Horizons mission performed the first flyby of a small Kuiper Belt Object (KBO), (486958) Arrokoth on 1 January 2019. The fast flyby revealed a fascinating, flattened, contact binary replete with a variety of unexpected geologic terrains.
James T. Keane, Simon B. Porter, Ross A. Beyer, Orkan M. Umurhan, William B. McKinnon, Jeffrey M. Moore, John R. Spencer, S. Alan Stern, Carver J. Bierson, Richard P. Binzel, Douglas P. Hamilton, Carey M. Lisse, Xiaochen Mao, Silvia Protopapa, Paul M. Schenk, Mark R. Showalter, John A. Stansberry, Oliver L. White, Anne J. Verbiscer, Joel W. Parker, Catherine B. Olkin, Harold A. Weaver, Kelsi N. Singer   +22 more
wiley   +1 more source

Abundance and importance of petrological type 1 chondritic material

Meteoritics &Planetary Science, Volume 57, Issue 2, Page 277-301, February 2022., 2022
Abstract We review the mineralogy, petrology, and abundance of petrological type 1 extraterrestrial material. Such material has been completely altered by aqueous processing on its parent bodies. As well as the four meteorite groups that contain type 1 members (CI, CM, CR, and CY), we summarize data from the 2019 fall Flensburg and a recent reanalysis ...
Sara S. Russell, M. D. Suttle, A. J. King   +2 more
wiley   +1 more source

THE COLOR DIFFERENCES OF KUIPER BELT OBJECTS IN RESONANCE WITH NEPTUNE [PDF]

The Astronomical Journal, 2012
(Abridged) New optical colors of 58 objects in mean motion resonances with Neptune show the various resonant populations have significantly different color distributions. The 5:3 and 7:4 resonances have semi-major axes near the middle of the main Kuiper Belt and both are dominated by ultra-red material. The 5:3 and 7:4 resonances have statistically the
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