Elementary Process of Galactic Spiral Arm Formation: Phase Synchronization of Epicyclic Motion by Gravitational Scattering

Swing amplification is a model of spiral arm formation in disk galaxies. Previous N -body simulations show that the epicycle phases of stars in spiral arms are synchronized. However, the elementary process of the phase synchronization is not well understood. In order to investigate phase synchroniza...

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Veröffentlicht in:	The Astrophysical journal 2021-06, Vol.913 (2), p.121
Hauptverfasser:	Yoshida, Yuki, Kokubo, Eiichiro
Format:	Artikel
Sprache:	eng
Schlagworte:	Astrophysics Disk galaxies Galactic evolution Galactic structure Orbital elements Orbital mechanics Scattering Spiral arms Stars Stellar evolution Stellar kinematics Stellar motion Stellar orbits Synchronism Vertical motion
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