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We conduct a rigorous examination of the nearby red supergiant Betelgeuse by drawing on the synthesis of new observational data and three different modeling techniques. Our observational results include the release of new, processed…

Solar and Stellar Astrophysics · Physics 2020-10-15 Meridith Joyce , Shing-Chi Leung , László Molnár , Michael J. Ireland , Chiaki Kobayashi , Ken'ichi Nomoto

Certain spiral density waves in Saturn's rings are generated through resonances with planetary normal modes, making them valuable probes of Saturn's internal structure. Previous research has primarily focused on the rotation rates of these…

Physical studies of asteroids depend on an availability of lightcurve data. Targets that are easy to observe and analyse naturally have more data available, so their synodic periods are confirmed from multiple sources. Also, thanks to…

Context. To investigate the distribution of rotation periods of asteroids from different regions of the Solar System and distribution of diameters of near-Earth asteroids (NEAs). Aims. Verify if nonextensive statistics satisfactorily…

Earth and Planetary Astrophysics · Physics 2012-05-29 Alberto S. Betzler , Ernesto P. Borges

Observations of heavy (${\simeq}2\,M_\odot$) neutron stars in addition to the recent measurement of tidal deformability from the binary neutron-star merger GW170817, place interesting constraints on theories of dense matter. Current and…

High Energy Astrophysical Phenomena · Physics 2018-08-29 M. Sieniawska , M. Bejger , B. Haskell

One of the most efficient and reliable observational technique allowing to probe the internal structure of a star is the determination of the apsidal motion in close eccentric binaries. This secular precession of the binary orbit's major…

Solar and Stellar Astrophysics · Physics 2025-11-04 Sophie Rosu

The increasing richness of data related to cold dense matter, from laboratory experiments to neutron-star observations, requires a framework for constraining the properties of such matter that makes use of all relevant information. Here, we…

High Energy Astrophysical Phenomena · Physics 2020-01-08 M. Coleman Miller , Cecilia Chirenti , Frederick K. Lamb

This study examines the rotational characteristics of asteroids through statistical modeling of the diameter-period relationship. A statistical evaluation of the diameter-period relationship was conducted using a dataset of 34,326…

Earth and Planetary Astrophysics · Physics 2025-08-26 Maryam Nastaran , Atila Poro , Raziyeh Hosseini , Matin Najarzadeh

Uranus' bulk composition remains unknown. Although there are clear indications that Uranus' interior is not fully convective, and therefore has a non-adiabatic temperature profile, many interior models continue to assume an adiabatic…

Earth and Planetary Astrophysics · Physics 2024-01-23 Benno A. Neuenschwander , Simon Müller , Ravit Helled

Rotational shear in Sun-like stars is thought to be an important ingredient in models of stellar dynamos. Thanks to helioseismology, rotation in the Sun is characterized well, but the interior rotation profiles of other Sun-like stars are…

Solar and Stellar Astrophysics · Physics 2017-07-05 M. B. Nielsen , H. Schunker , L. Gizon , J. Schou , W. H. Ball

Context. Gamma Doradus (hereafter $\gamma$~Dor) stars are gravity-mode pulsators whose periods carry information about the internal structure of the star. These periods are especially sensitive to the internal rotation and chemical mixing,…

Solar and Stellar Astrophysics · Physics 2022-12-21 Stefano Garcia , Timothy Van Reeth , Joris De Ridder , Conny Aerts

We constrain the planetary atmospheric mass fraction at the time of the dispersal of the protoplanetary disk and the evolution of the stellar rotation rate for a dozen multi-planet systems that host sub-Neptunes and/or super-Earths. We…

Earth and Planetary Astrophysics · Physics 2021-12-22 A. Bonfanti , L. Fossati , D. Kubyshkina , P. E. Cubillos

The large Kuiper Belt object (KBO) Eris is nearly as big as Pluto and has a small moon, Dysnomia. Constraints on the system's spin and orbit characteristics were recently used to argue for a dissipative Eris, requiring a differentiated…

Earth and Planetary Astrophysics · Physics 2025-08-25 Ryunosuke Akiba , Francis Nimmo

We present a wide-ranging but in-depth analysis of Centaurs, focusing on their physical and structural aspects. Centaurs, originating from the Scattered Disk and Kuiper Belt, play a crucial role in our understanding of Solar System…

Earth and Planetary Astrophysics · Physics 2025-06-06 Y. R. Fernandez , M. W. Buie , P. Lacerda , R. Marschall

The Kepler space telescope has provided time series of red giants of such unprecedented quality that a detailed asteroseismic analysis becomes possible. For a limited set of about a dozen red giants, the observed oscillation frequencies…

Solar and Stellar Astrophysics · Physics 2017-06-14 Santiago Andrés Triana , Enrico Corsaro , Joris De Ridder , Alfio Bonanno , Fernando Pérez Hernández , Rafael García

A class of asteroids, called large super-fast rotators (large SFRs), have rotation periods shorter than 2 hours and diameters larger than ~ 0.3 km. They pose challenges to the usual interior rubble-pile structure unless a relatively high…

We fit an isothermal oscillatory density model of Saturn's protoplanetary disk to the present-day major satellites and innermost rings D/C and we determine the radial scale length of the disk, the equation of state and the central density…

Earth and Planetary Astrophysics · Physics 2019-03-05 Dimitris M. Christodoulou , Demosthenes Kazanas

Context. Centaurs are icy objects in transition between the transneptunian region and the inner solar system, orbiting the Sun in the giant planet region. Some Centaurs display cometary activity, which cannot be sustained by the sublimation…

We demonstrate the efficiency and effectiveness of using a satellite-based sensor with visual and infrared focal plane arrays to search for NEAs with orbits largely interior to the Earth's orbit. Such a space-based system could detect…

Astrophysics · Physics 2009-10-31 E. F. Tedesco , K. Muinonen , S. D. Price

Recently, Cui et al. [Nature \textbf{621}, 711 (2023)] reported that the jet nozzle of M87* exhibits a precession with a period of approximately 11 years. This finding strongly suggests that the supermassive black hole in the core of M87…

General Relativity and Quantum Cosmology · Physics 2024-12-03 Shao-Wen Wei , Yuan-Chuan Zou , Yu-Peng Zhang , Yu-Xiao Liu
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