yt.lagos.Halo.virial_radius

Halo.virial_radius(virial_overdensity=200.0, bins=300)

Return the virial radius of the halo in code units.

The virial radius of the halo is calculated, using only the particles in the halo (no baryonic information used). Returns -1 if the halo is not virialized.

Parameters :

virial_overdensity : float

The overdensity threshold compared to the universal average when calculating the virial radius. Default = 200.

bins : integer

The number of spherical bins used to calculate overdensities. Default = 300.

Returns :

radius : float

The virial raius in code units of the particles in the halo. -1 if not virialized.

Examples

>>> vr = halos[0].virial_radius()

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