Eccentricity (behavior) ≈ Eccentricity (behavior)
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The Eccentric Kozai-Lidov Effect and Its Applications Open
The hierarchical triple-body approximation has useful applications to a variety of systems from planetary and stellar scales to supermassive black holes. In this approximation, the energy of each orbit is separately conserved, and therefor…
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Science with the space-based interferometer LISA. V. Extreme mass-ratio inspirals Open
The space-based Laser Interferometer Space Antenna (LISA) will be able to observe the gravitational-wave signals from systems comprised of a massive black hole and a stellar-mass compact object. These systems are known as extreme-mass-rati…
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Origins of Hot Jupiters Open
Hot Jupiters were the first exoplanets to be discovered around main sequence stars and astonished us with their close-in orbits. They are a prime example of how exoplanets have challenged our textbook, solar-system inspired story of how pl…
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The GAPS Programme with HARPS-N at TNG Open
We carried out a Bayesian homogeneous determination of the orbital parameters of 231 transiting giant planets (TGPs) that are alone or have distant companions; we employed differential evolution Markov chain Monte Carlo methods to analyse …
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On the formation history of Galactic double neutron stars Open
Double neutron stars (DNSs) have been observed as Galactic radio pulsars, and the recent discovery of gravitational waves from the DNS merger GW170817 adds to the known DNS population. We perform rapid population synthesis of massive binar…
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Lidov–Kozai Cycles with Gravitational Radiation: Merging Black Holes in Isolated Triple Systems Open
We show that a black-hole binary with an external companion can undergo Lidov–Kozai cycles that cause a close pericenter passage, leading to a rapid merger due to gravitational-wave emission. This scenario occurs most often for systems in …
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Exoplanet orbital eccentricities derived from LAMOST–Kepler analysis Open
Significance The Kepler satellite has made revolutionary discoveries of thousands of planets down to Earth size. However, the orbital shapes (parameterized by eccentricities) of most Kepler planets remain unknown. We derive the eccentricit…
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Closed-form tidal approximants for binary neutron star gravitational waveforms constructed from high-resolution numerical relativity simulations Open
We construct closed-form gravitational waveforms (GWs) with tidal effects for the coalescence and merger of binary neutron stars. The method relies on a new set of eccentricity-reduced and high-resolution numerical relativity (NR) simulati…
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Resonance locking as the source of rapid tidal migration in the Jupiter and Saturn moon systems Open
The inner moons of Jupiter and Saturn migrate outwards due to tidal energy dissipation within the planets, the details of which remain poorly understood. We demonstrate that resonance locking between moons and internal oscillation modes of…
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Photoevaporation and high-eccentricity migration created the sub-Jovian desert Open
The mass–period or radius–period distribution of close-in exoplanets shows a paucity of intermediate mass/size (sub-Jovian) planets with periods ≲3 d. We show that this sub-Jovian desert can be explained by the photoevaporation of highly i…
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The Orbital Eccentricity of Small Planet Systems Open
We determine the orbital eccentricities of individual small Kepler planets, through a combination of asteroseismology and transit light-curve analysis. We are able to constrain the eccentricities of 51 systems with a single transiting plan…
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The evolution of hierarchical triple star-systems Open
Field stars are frequently formed in pairs, and many of these binaries are part of triples or even higher-order systems. Even though, the principles of single stellar evolution and binary evolution, have been accepted for a long time, the …
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Greatly Enhanced Merger Rates of Compact-object Binaries in Non-spherical Nuclear Star Clusters Open
The Milky Way and a significant fraction of galaxies are observed to host a central massive black hole (MBH) embedded in a non-spherical nuclear star cluster. We study the secular orbital evolution of compact-object binaries in these envir…
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Orbital pacing and secular evolution of the Early Jurassic carbon cycle Open
Significance Cyclic variations in Earth’s orbit drive periodic changes in the ocean–atmosphere system at a time scale of tens to hundreds of thousands of years. The Mochras δ 13 C TOC record illustrates the continued impact of long-eccentr…
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Waveform model for an eccentric binary black hole based on the effective-one-body-numerical-relativity formalism Open
Binary black hole systems are among the most important sources for\ngravitational wave detection. And also they are good objects for theoretical\nresearch for general relativity. Gravitational waveform template is important\nto data analys…
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Astronomical calibration of the Ypresian timescale: implications for seafloor spreading rates and the chaotic behavior of the solar system? Open
To fully understand the global climate dynamics of the warm early Eocene with its reoccurring hyperthermal events, an accurate high-fidelity age model is required. The Ypresian stage (56–47.8 Ma) covers a key interval within the Eocene as …
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Merging binaries in the Galactic Center: the eccentric Kozai–Lidov mechanism with stellar evolution Open
Most, if not all, stars in the field are born in binary configurations or higher multiplicity systems. In dense stellar environment such as the Galactic Center (GC), many stars are expected to be in binary configurations as well. These bin…
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Population-level Eccentricity Distributions of Imaged Exoplanets and Brown Dwarf Companions: Dynamical Evidence for Distinct Formation Channels* Open
The orbital eccentricities of directly imaged exoplanets and brown dwarf companions provide clues about their formation and dynamical histories. We combine new high-contrast imaging observations of substellar companions obtained primarily …
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Impairing the useful field of view in natural scenes: Tunnel vision versus general interference Open
A fundamental issue in visual attention is the relationship between the useful field of view (UFOV), the region of visual space where information is encoded within a single fixation, and eccentricity. A common assumption is that impairing …
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eLISA eccentricity measurements as tracers of binary black hole formation Open
Up to hundreds of black hole binaries individually resolvable by eLISA will\ncoalesce in the Advanced LIGO/Virgo band within ten years, allowing for\nmulti-band gravitational wave observations. Binaries formed via dynamical\ninteractions i…
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The Apparently Decaying Orbit of WASP-12b Open
We present new transit and occultation times for the hot Jupiter WASP-12b. The data are compatible with a constant period derivative: P = -29 ± 3msyr ⁻¹ and P/P = 3.2 Myr. However, it is difficult to tell whether we have observed orbital d…
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The gravitational wave background from massive black hole binaries in Illustris: spectral features and time to detection with pulsar timing arrays Open
Pulsar Timing Arrays (PTA) around the world are using the incredible consistency of millisecond pulsars to measure low frequency gravitational waves from (super)Massive Black Hole (MBH) binaries. We use comprehensive MBH merger models base…
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Faithful analytical effective-one-body waveform model for spin-aligned, moderately eccentric, coalescing black hole binaries Open
We present a new effective-one-body (EOB) model for eccentric binary coalescences. The model stems from the state-of-the-art model TEOBResumS$\_$SM for circularized coalescing black-hole binaries, that is modified to explicitly incorporate…
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Conservative Dynamics of Binary Systems at Fourth Post-Minkowskian Order in the Large-Eccentricity Expansion Open
We compute the conservative dynamics of nonspinning binaries at fourth post-Minkowskian order in the large-eccentricity limit, including both potential and radiation-reaction tail effects. This is achieved by obtaining the scattering angle…
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Drill-exit temperature characteristics in drilling of UD and MD CFRP composites based on infrared thermography Open
This paper presents a comprehensive study on the complex drill-exit temperature characteristics in the drilling of unidirectional (UD) and multidirectional (MD) CFRPs using a state-of-art microscopy infrared imaging system. For the first t…
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Measuring eccentricity in binary black hole inspirals with gravitational waves Open
When binary black holes form in the field, it is expected that their orbits typically circularize before coalescence. In galactic nuclei and globular clusters, binary black holes can form dynamically. Recent results suggest that ≈5% of mer…
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Searching for eccentricity: signatures of dynamical formation in the first gravitational-wave transient catalogue of LIGO and Virgo Open
Binary black holes are thought to form primarily via two channels: isolated evolution and dynamical formation. The component masses, spins, and eccentricity of a binary black hole system provide clues to its formation history. We focus on …
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Effective one-body multipolar waveform model for spin-aligned, quasicircular, eccentric, hyperbolic black hole binaries Open
Building upon recent work, we present an improved effective-one-body (EOB)\nmodel for spin-aligned, coalescing, black hole binaries with generic orbital\nconfigurations, i.e. quasi-circular, eccentric or hyperbolic orbits. The model\nrelie…
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Eccentric binary black hole inspiral-merger-ringdown gravitational waveform model from numerical relativity and post-Newtonian theory Open
We present a prescription for computing gravitational waveforms for the inspiral, merger and ringdown of non-spinning eccentric binary black hole systems. The inspiral waveform is computed using the post-Newtonian expansion and the merger …
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The GAPS programme with HARPS-N at TNG Open
Open cluster (OC) stars share the same age and metallicity, and, in general, their age and mass can be estimated with higher precision than for field stars. For this reason, OCs are considered an important laboratory to study the relation …