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Inner cutoff radius for spherical models #24
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no, it's not physically possible: a spherical isotropic system must have a monotonically declining density profile [Binney & Tremaine, problem 4.4]. See also section 3.2.1 in Lacroix et al. arxiv:1805.02403 for a more in-depth discussion: in fact, even a model with a very flat core, such as a generalization of the Plummer model to rho ~ (r^n+a^n)^{-5/n}, is unphysical (has negative DF) for n>2. |
I should've added more context to this. For the models that I am interested in, there is an MBH present at the center. I would like to generate N-body models such that there are no particles inside the Schwarzschild radius of the MBH. Would this be possible within the Agama framework? |
hmm, I'd think this is such a small radius that the expected number of particles is much smaller than 1. And the easiest thing is to remove them from the snapshot manually, if any are present. |
Thank you! |
Hello,
I was trying to construct isotropic spherical N-body models using mkspherical. For the purposes of my simulations, I need spherical models where there are no particles present inside some inner cutoff radius. Is this possible to do with Agama? If so, how?
Thank you.
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