Gravitational Instability of a Nonrotating Galaxy

Aula Seminari (Laboratori Nazionali di Frascati, Via Enrico Fermi 40, Frascati)

Aula Seminari

Laboratori Nazionali di Frascati, Via Enrico Fermi 40, Frascati

Via Enrico Fermi 40 00044 Frascati

Gravitational instability of a star distribution in a galaxy is a well-known phenomenon in astrophysics. This problem can be analyzed using the standard tools developed in accelerator physics for analyzing the onset of beam instability and loss of Landau damping. An attempt is made here for a nonrotating galaxy. Predictions for the maximum stable galaxy size are in remarkable agreement with observations.

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