Oscillations In Galaxies

Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/3101

Title:	Oscillations In Galaxies
Authors:	Namboodiri, P. M. S
Keywords:	Stellar Dynamics Galaxies Oscillations Numerical Simulations
Issue Date:	Feb-2000
Publisher:	Springer
Citation:	Celestial Mechanics and Dynamical Astronomy, Vol. 76, No. 1, pp. 69 - 77
Abstract:	Oscillations in galaxies have been investigated by numerical simulations. The various models used have density distributions corresponding to that of polytrope of index n in the range 0 ≤ n ≤ 4 and their evolution has been followed for more than 70 crossing times. The kinetic energy shows regular and smooth oscillations for models with n = 0, 1 and 2 whereas in other models it shows noisy oscillation. The oscillation in kinetic energy is observed to have a period of 3 crossing time irrespective of the density and size of the galaxy. The amplitude of oscillation is seen to decrease as the central density of the galaxy increases.
Description:	Restricted Access
URI:	http://hdl.handle.net/2248/3101
ISSN:	0923-2958
Appears in Collections:	IIAP Publications

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