Low mass dark matter halos in voids

(2) Copernicus Center; (3) NMSU); Anatoly Klypin (3) ((1) AIP; Ewa Lokas (2); Stefan Gottloeber (1)

arxiv: astro-ph/0207487 · v1 · submitted 2002-07-23 · 🌌 astro-ph

Low mass dark matter halos in voids

Stefan Gottloeber (1) , Ewa Lokas (2) , Anatoly Klypin (3) ((1) AIP , (2) Copernicus Center , (3) NMSU) This is my paper

classification 🌌 astro-ph

keywords halosmassdarkfunctionmattervoidvoidsapproximation

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Using numerical simulations and the Sheth-Tormen approximation we study the mass function of dark matter halos in voids. We find that the void mass function is significantly lower and its shape is different than that of the field halos. We predict that in the standard LCDM model a void with radius 10 h^-1 Mpc should have 50 halos with circular velocity v_c > 50 km/s and 600 halos with v_c > 20 km/s.

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Low mass dark matter halos in voids

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