2019
DOI: 10.48550/arxiv.1905.08137
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Derivation of the core mass -- halo mass relation of fermionic and bosonic dark matter halos from an effective thermodynamical model

Pierre-Henri Chavanis
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Cited by 4 publications
(30 citation statements)
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“…This makes the core-halo configuration extremely important since it corresponds to the "most probable" configuration of the system (in a thermodynamical sense). Finally, using the "velocity dispersion tracing" relation, we could generalize the core mass -halo mass relation obtained by Schive et al [25] to the case of DM halos made of bosons with attractive or repulsive interaction and to the case of DM halos made of fermions [8,16].…”
Section: Introductionmentioning
confidence: 82%
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“…This makes the core-halo configuration extremely important since it corresponds to the "most probable" configuration of the system (in a thermodynamical sense). Finally, using the "velocity dispersion tracing" relation, we could generalize the core mass -halo mass relation obtained by Schive et al [25] to the case of DM halos made of bosons with attractive or repulsive interaction and to the case of DM halos made of fermions [8,16].…”
Section: Introductionmentioning
confidence: 82%
“…In order to match the characteristics of the smallest halos like dwarf spheroidals (dSphs) that are interpreted as purely quantum objects (see below), the mass of the fermion should be of the order of m ∼ 170 eV/c 2 while the mass of the boson should be of the order of m ∼ 2.92 × 10 −22 eV/c 2 if it has a vanishing * Electronic address: chavanis@irsamc.ups-tlse.fr self-interaction, or lie in the range 2.19 × 10 −22 eV/c 2 < m < 2.92 × 10 −22 eV/c 2 if it has an attractive selfinteraction, and in the range 2.92 × 10 −22 eV/c 2 < m < 1.10×10 −3 eV/c 2 if it has a repulsive self-interaction (see Appendix D of [15] and Ref. [16]). 1 In these quantum models, sufficiently large DM halos have a "core-halo" structure which results from a process of violent collisionless relaxation [20] and gravitational cooling [21][22][23].…”
Section: Introductionmentioning
confidence: 99%
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“…In the case of dark matter halos made of fermions (massive neutrinos) or bosons (axions), the gravothermal catastrophe can be stopped or even prevented by quantum mechanics. This leads to a fermion or boson "ball" -forming a bulge -surrounded by an extended halo (quantum core-halo structure) [198,199]. Alternatively, during the gravothermal catastrophe, the system may become relativistic and finally undergo a dynamical instability of general relativistic origin leading to the formation of a supermassive black hole as described in [132,151,161].…”
Section: B Instability At Ec For Globular Clusters and Dark Matter Halosmentioning
confidence: 99%