Does Dynamical Friction Produce Dynamical Heating?

Details Does Dynamical Friction Produce Dynamical Heating? Does Dynamical Friction Produce Dynamical Heating?

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992rmxaa..24..129m&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica, 24, 129

Astronomy and Astrophysics

Astronomy

Scientific paper

RESUMEN Utilizamos experimentos numericos para investigar `a posibilidad de que la fricci6n dinamica pueda producir calentamiento dinamico. Consideramos un sistema de partfculas de prueba que orbitan en torno a una partfcula masiva; este sistema esta' inmerso en un medio de partfculas masivas que tienen movimientos tanto al azar como sistematicos. Los ultimos provocan el movimiento del sistema de partfculas de prueba por fricci6n dinamica, pero hallamos que los cambios en la energfa interna del sistema, Si existen, deben ser muy pequeflos. ABSTRACT We use numerical experiments to investigate the possibility that dynamical friction could produce dynamical heating. We consider a system of test particles orbiting around a massive particle; this system is immersed in a sea of massive particles that have both random and systematic motions. The latter forces the system of test particles to move through dynamical friction, but we found that changes in the internal energy of the system, if present, should be very small. Key words: STARS-STELLAR DYNAMICS

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