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Eccentricity tides generate a torque that can drive an ocean planet towards asynchronous rotation states of equilibrium when enhanced by resonances associated with the oceanic tidal modes. We investigate the impact of eccentricity tides on…

地球与行星天体物理 · 物理学 2019-09-18 Pierre Auclair-Desrotour , Jérémy Leconte , Emeline Bolmont , Stéphane Mathis

The population of natural objects in a 1:1 mean motion resonance with Earth are known as Earth's co-orbitals. Main belt objects can dynamically evolve into Earth co-orbitals but taxonomic studies of some of them have suggested that they are…

地球与行星天体物理 · 物理学 2026-04-23 Elisa Maria Alessi , Robert Jedicke

The impact flux over the last 3 Ga in the inner Solar System is commonly assumed to be constant through time. However, asteroid break-up events in the main belt may have been responsible for cratering spikes over the last ~2 Ga on the…

Models of the Sun's long-term evolution suggest that its luminosity was substantially reduced 2-4 billion years ago, which is inconsistent with substantial evidence for warm and wet conditions in the geological records of both ancient Earth…

地球与行星天体物理 · 物理学 2018-12-19 Christopher Spalding , Woodward W. Fischer , Gregory Laughlin

The present work is a critical revision of the hypothesis of the planetary tidal influence on solar activity published by Abreu et al. (Astron. Astrophys. 548, A88, 2012; called A12 here). A12 describes a hypothesis that planets can have an…

地球与行星天体物理 · 物理学 2014-02-18 Stepan Poluianov , Ilya Usoskin

The dynamical evolution of the solar system is chaotic with a Lyapunov time of only $\sim$5 Myr for the inner planets. Due to the chaos it is fundamentally impossible to accurately predict the solar system's orbital evolution beyond…

地球与行星天体物理 · 物理学 2022-08-31 Richard E. Zeebe

The so-called flyby anomaly has encouraged several authors to analyze in detail the minor perturbative contributions to the trajectory of spacecraft performing a flyby manoeuvre. This anomaly consist of an unexplained increase or decrease…

空间物理 · 物理学 2016-11-28 L. Acedo

Recent analyses of Kepler space telescope data reveal that transiting planets with orbital periods shorter than about 2-3 days are generally observed around late-type stars with rotation periods longer than about 5-10 days. We investigate…

地球与行星天体物理 · 物理学 2015-06-19 A. F. Lanza , E. L. Shkolnik

Here we present the current state of knowledge on the long-term evolution of Saturn's moon system due to tides within Saturn. First we provide some background on tidal evolution, orbital resonances and satellite tides. Then we address in…

The 4.2-day orbit of the newly discovered planet around 51~Pegasi is formally unstable to tidal dissipation. However, the orbital decay time in this system is longer than the main-sequence lifetime of the central star. Given our best…

天体物理学 · 物理学 2009-10-28 F. A. Rasio , C. A. Tout , S. H. Lubow , M. Livio

Tidal interactions are one of the primary drivers of orbital evolution for massive planets with short orbital periods. Tidal dissipation within host stars can cause the orbits of such planets to decay. However, the mechanisms of tidal…

地球与行星天体物理 · 物理学 2025-08-27 Noah Sodickson , Samuel Grunblatt

The magnetotail current sheet's spatial configuration and stability control the onset of magnetic reconnection - the driving process for magnetospheric substorms. The near-Earth current sheet has been thoroughly investigated by numerous…

空间物理 · 物理学 2023-09-29 S. R. Kamaletdinov , A. V. Artemyev , A. Runov , V. Angelopoulos

While the number of detected planets is continuously increasing since 1995, their impact on their central star still remain poorly understood. Yet, the presence of a massive close-in planet can strongly modify the surface angular velocity…

地球与行星天体物理 · 物理学 2018-10-30 Florian Gallet , Philippe Delorme

A recent analysis of a Lunar Laser Ranging (LLR) data record spanning 38.7 yr revealed an anomalous increase of the eccentricity of the lunar orbit amounting to de/dt_meas = (9 +/- 3) 10^-12 yr^-1. The present-day models of the dissipative…

广义相对论与量子宇宙学 · 物理学 2011-07-26 Lorenzo Iorio

The paper addresses the possibility of a young Mars having had a massive moon, which synchronised the rotation of Mars, and gave Mars an initial asymmetric triaxiality to be later boosted by geological processes. It turns out that a moon of…

地球与行星天体物理 · 物理学 2024-10-15 Michael Efroimsky

We give an idea and the order-of-magnitude estimations to explain the recently reported secular increase of the Astronomical Unit (AU) by Krasinsky and Brumberg (2004). The idea proposed is analogous to the tidal acceleration in the…

地球与行星天体物理 · 物理学 2015-05-13 Takaho Miura , Hideyoshi Arakida , Masumi Kasai , Shuichi Kuramata

The intense activity of cratering on the Moon and in the inner regions of the solar system was accomplished during the first 10^9 years [1]. Occasionally, some impact events occur even nowadays. In Section 1, we treat, from a historical…

天体物理学 · 物理学 2007-05-23 Giovanni Imponente , Costantino Sigismondi

In this paper we investigate the correlation between the atmospheric perturbations at Paranal Observatory and the Chilean coast tides, which are mostly modulated by the 14-day syzygy solar-lunar tidal cycle. To this aim, we downloaded 15…

天体物理仪器与方法 · 物理学 2019-02-27 S. Cavazzani , S. Ortolani , N. Scafetta , V. Zitelli , G. Carraro

Tidal dissipation of kinetic energy, when it is strong enough, tends to synchronize the rotation of planets and moons with the mean orbital motion, or drive it into long-term stable spin-orbit resonances. As the orbital motion undergoes…

地球与行星天体物理 · 物理学 2015-12-23 Valeri V. Makarov , Julien Frouard , Bryan Dorland

Previous work has demonstrated orbital stability for 100 Myr of initially near-circular and coplanar small bodies in a region termed the 'Earth-Mars belt' from 1.08 au $< a <$ 1.28 au. Via numerical integration of 3000 particles, we studied…

地球与行星天体物理 · 物理学 2020-10-14 Yukun Huang , Brett Gladman