Visibility moments and power spectrum of turbulence velocity
arXiv:1505.04023 · doi:10.1093/mnrasl/slv180
Abstract
Here we introduce moments of visibility function and discuss how those can be used to estimate the power spectrum of the turbulent velocity of external spiral galaxies. We perform numerical simulation to confirm the credibility of this method and found that for galaxies with lower inclination angles it works fine. This is the only method to estimate the power spectrum of the turbulent velocity fluctuation in the ISM of the external galaxies.
Accepted for Publication, MNRAS Letters on 2015 November 10
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