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Related papers: Centaur Nuclei: Sizes, Shapes, Spins, and Structur…

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This second paper in our series investigates the evolutionary mechanisms that shape pulsars and millisecond pulsars (MSPs) across different astrophysical environments. We focus on the physical processes that govern spin evolution, magnetic…

High Energy Astrophysical Phenomena · Physics 2026-02-10 Maria Rah , Rainer Spurzem , Francesco Flammini Dotti , Areg Mickaelian

{\omega} Centauri, the remnant nucleus of an accreted dwarf galaxy, is a unique laboratory for studying complex stellar populations. The recently discovered Fimbulthul stream provides a fossil record of its ongoing tidal dissolution. In…

Astrophysics of Galaxies · Physics 2026-03-04 Shiru Zheng , Baitian Tang , Long Wang , Jose G. Fernandez-Trincado , Ruoyun Huang , Xia Li , XiaoDong Li

Centaurs are the transitional population between trans-Neptunian objects (TNOs) and Jupiter-family comets. For this reason it is possible to access the smaller ones, which is more difficult to do with the TNO population. The goal of this…

The Asteroid Belt and the Kuiper Belt are relics from the formation of our solar system. Understanding the size and spin distribution of the two belts is crucial for a deeper understanding of the formation of our solar system and the…

Earth and Planetary Astrophysics · Physics 2015-02-20 Elad Steinberg , Re'em Sari

Interstellar material has been discovered in our Solar System, yet its origins and details of its transport are unknown. Here we present $\alpha$ Centauri as a case study of the delivery of interstellar material to our Solar System.…

Earth and Planetary Astrophysics · Physics 2025-03-10 Cole R. Gregg , Paul A. Wiegert

The relaxed distribution of stars around a massive black hole is known to follow a cusp profile $\rho(r)\propto r^{-\alpha}$ with characteristic slope $\alpha=7/4$. This follows from energy conservation and a scattering rate as given by two…

Astrophysics of Galaxies · Physics 2018-01-10 Giacomo Fragione , Re'em Sari

We propose a Roman Space Telescope survey to investigate fundamental properties of the distant solar system in the region of the Kuiper Belt where object characteristics and the size distribution are inaccessible from any other telescope.…

Via joint analysis of a calibrated telescopic survey, which found scattering Kuiper Belt objects, and models of their expected orbital distribution, we measure the form of the scattering object's size distribution. Ruling out a single…

Earth and Planetary Astrophysics · Physics 2013-02-01 C. Shankman , B. Gladman , N. Kaib , J. J. Kavelaars , J. -M. Petit

We discuss the possibility that a dominant fraction of the cosmic rays above the ankle is due to a single nearby source, considering in particular the radio galaxy Centaurus A. We focus on the properties of the source spectrum and…

High Energy Astrophysical Phenomena · Physics 2024-11-28 Silvia Mollerach , Esteban Roulet

Over the past 10 years abundant evidence has emerged that many (if not all) stars are born with circumstellar disks. Understanding the evolution of post-accretion disks can provide strong constraints on theories of planet formation and…

Astrophysics · Physics 2007-05-23 M. R. Meyer , D. E. Backman , A. J. Weinberger , M. C. Wyatt

The Kuiper belt objects, the Centaurs, and the Jupiter-family comets form an evolutionary continuum of small outer Solar System objects, and their study allows us to gain insight into the history and evolution of the Solar System. Broadband…

The Centaur (60558) Echeclus was discovered on March 03, 2000, orbiting between the orbits of Jupiter and Uranus. After exhibiting frequent outbursts, it also received a comet designation, 174P. If the ejected material can be a source of…

The scattering trans-Neptunian Objects (TNOs) can be measured to smaller sizes than any other distant small-body population. We use the largest sample yet obtained, 68 discoveries, primarily by the Outer Solar System Origins Survey (OSSOS),…

Earth and Planetary Astrophysics · Physics 2018-05-02 S. M. Lawler , C. Shankman , JJ. Kavelaars , M. Alexandersen , M. T. Bannister , Y. -T. Chen , B. Gladman , W. C. Fraser , S. Gwyn , N. Kaib , J. -M. Petit , K. Volk

$\omega$ Centauri is considered the most massive globular cluster of the Milky Way and likely the former nuclear star cluster of a galaxy accreted by the Milky Way. It is speculated to contain an intermediate-mass black hole (IMBH) from…

Although the present-day orbital distribution of minor bodies that go around the Sun between the orbit of Neptune and the Kuiper Cliff is well understood, past ~50 au from the Sun, our vision gets blurred as objects become fainter and…

Earth and Planetary Astrophysics · Physics 2023-12-25 C. de la Fuente Marcos , R. de la Fuente Marcos

X-ray images and gas temperatures taken from a deep ~200 ks Chandra observation of the Centaurus cluster are presented. Multiple inner bubbles and outer semicircular edges are revealed, together with wispy filaments of soft X-ray emitting…

Astrophysics · Physics 2009-11-10 A. C. Fabian , J. S. Sanders , G. B Taylor , S. W. Allen

This chapter discusses the dynamical properties of the Kuiper belt population. Then, it focuses on the characteristics of the Kuiper belt that cannot be explained by its evolution in the framework of the current solar system. We review…

Astrophysics · Physics 2007-05-23 A. Morbidelli , H. F. Levison , R. Gomes

Since 2013, dense and narrow rings are known around the small Centaur object Chariklo and the dwarf planet Haumea. Dense material has also been detected around the Centaur Chiron, although its nature is debated. This is the first time ever…

Earth and Planetary Astrophysics · Physics 2020-01-22 Bruno Sicardy , Stefan Renner , Rodrigo Leiva , Françoise Roques , Maryame El Moutamid , Pablo Santos-Sanz , Josselin Desmars

Scintillation spectra of some pulsars have suggested the existence of $\lesssim$ AU scale density structures in the ionized interstellar medium, whose astrophysical correspondence is still a mystery. The detailed study of Brisken et al.…

Astrophysics of Galaxies · Physics 2021-09-28 Xun Shi
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