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pericentre

Overview page. Subjects: Astronomy and Astrophysics.

The point in an elliptical orbit that is nearest to the centre of mass of the orbiting system, such as a binary star or a planet and satellite.

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pericentre

Overview page. Subjects: Astronomy and Astrophysics.

The point in an elliptical orbit that is nearest to the centre of mass of the orbiting system, such as a binary star or a planet and satellite.

See overview in Oxford Index

pericentre

Ian Ridpath.

in A Dictionary of Astronomy

January 2012; p ublished online January 2012 .

Reference Entry. Subjects: Astronomy and Astrophysics. 29 words.

The point in an elliptical orbit that is nearest to the centre of mass of the orbiting system, such as

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pericentre

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics. 29 words.

The point in an elliptical orbit that is nearest to the centre of mass of the orbiting system, such as

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Accumulated tidal heating of stars over multiple pericentre passages near SgrA*

Gongjie Li and Abraham Loeb.

in Monthly Notices of the Royal Astronomical Society

March 2013; p ublished online January 2013 .

Journal Article. Subjects: Astronomy and Astrophysics. 5521 words.

We consider the long-term tidal heating of a star by the supermassive black hole at the Galactic centre, SgrA*. We show that gravitational interaction with background stars leads to a...

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Simulating the effect of the Sgr A* accretion flow on the appearance of G2 after pericentre

David Abarca, Aleksander Sądowski and Lorenzo Sironi.

in Monthly Notices of the Royal Astronomical Society

P ublished online March 2014 .

Journal Article. Subjects: Astronomy and Astrophysics. 7020 words.

We study the dynamical interaction of the G2 cloud with the accretion flow around Sgr A* by means of 3D, hydrodynamic simulations. We show the effects of the rotating accretion flow on the...

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Clocks around Sgr A*

Raymond Angélil and Prasenjit Saha.

in Monthly Notices of the Royal Astronomical Society

P ublished online September 2014 .

Journal Article. Subjects: Astronomy and Astrophysics. 6779 words.

The S stars near the Galactic Centre and any pulsars that may be on similar orbits can be modelled in a unified way as clocks orbiting a black hole, and hence are potential probes of...

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Probing the gas density in our Galactic Centre: moving mesh simulations of G2

Elad Steinberg, Re'em Sari, Orly Gnat, Stefan Gillessen, Philipp Plewa, Reinhard Genzel, Frank Eisenhauer, Thomas Ott, Oliver Pfuhl, Maryam Habibi, Idel Waisberg, Sebastiano von Fellenberg, Jason Dexter, Michi Bauböck and Alejandra Jimenez Rosales.

in Monthly Notices of the Royal Astronomical Society

P ublished online September 2017 .

Journal Article. Subjects: Astronomy and Astrophysics. 6464 words.

Abstract

The G2 object has recently passed its pericentre passage in our Galactic Centre. While the Br γ emission shows clear signs of tidal...

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Detailed survey of the phase space around Nix and Hydra

Á. Süli and Zs. Zsigmond.

in Monthly Notices of the Royal Astronomical Society

October 2009; p ublished online September 2009 .

Journal Article. Subjects: Astronomy and Astrophysics. 6712 words.

We present a detailed survey of the dynamical structure of the phase space around the new moons of the Pluto–Charon system. The spatial elliptic restricted three-body problem was used as...

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Hypervelocity stars from young stellar clusters in the Galactic Centre

G. Fragione, R. Capuzzo-Dolcetta and P. Kroupa.

in Monthly Notices of the Royal Astronomical Society

P ublished online January 2017 .

Journal Article. Subjects: Astronomy and Astrophysics. 5817 words.

Abstract

The enormous velocities of the so-called hypervelocity stars (HVSs) derive, likely, from close interactions with massive black holes, binary stars...

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A new inclination instability reshapes Keplerian discs into cones: application to the outer Solar system

Ann-Marie Madigan and Michael McCourt.

in Monthly Notices of the Royal Astronomical Society: Letters

P ublished online January 2016 .

Journal Article. Subjects: Astronomy and Astrophysics. 3430 words.

Discs of bodies orbiting a much more massive central object are extremely common in astrophysics. When the orbits comprising such discs are eccentric, we show they are susceptible to a new...

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