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Volumn 64, Issue 2, 2001, Pages

Dark matter phase space densities

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; DENSITY; KINETICS; MASS; MATHEMATICAL COMPUTING; SPACE;

EID: 85037907733     PISSN: 05562821     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevD.64.027301     Document Type: Article
Times cited : (31)

References (21)
  • 5
    • 33750677246 scopus 로고    scopus 로고
    • J. Sommer-Larsen and A. Dolgov, astro-ph/9912166
    • J. Sommer-Larsen and A. Dolgov, astro-ph/9912166;
  • 6
    • 33750644189 scopus 로고    scopus 로고
    • C. J. Hogan, astro-ph/9912549
    • C. J. Hogan, astro-ph/9912549;
  • 9
    • 33750673079 scopus 로고    scopus 로고
    • J. J. Dalcanton and C. J. Hogan, astro-ph/0004381.
    • J. J. Dalcanton and C. J. Hogan, astro-ph/0004381.
  • 10
    • 33750657431 scopus 로고    scopus 로고
    • note
    • Formation of larger galaxies and clusters clearly have to involve significant phase space dilution, probably because of mergers [4].
  • 14
    • 33750636726 scopus 로고
    • Phys. Rev. Lett. 54, 2720 (1985).
    • (1985) Phys. Rev. Lett. , vol.54 , pp. 2720
  • 16
    • 33750663465 scopus 로고
    • Phys. Rev. D 44, 999 (1991).
    • (1991) Phys. Rev. D , vol.44 , pp. 999
  • 18
    • 0001501451 scopus 로고
    • (in the following THL); see also
    • This is equivalent to the mixing-theorem construction of the maximal coarse-grained phase space density discussed in S. Tremaine, M. Hénon, and D. Lynden-Bell, Mon. Not. R. Astron. Soc. 219, 285 (1986) (in the following THL); see also
    • (1986) Mon. Not. R. Astron. Soc. , vol.219 , pp. 285
    • Tremaine, S.1    Hénon, M.2    Lynden-Bell, D.3
  • 19
    • 0000509716 scopus 로고
    • THL demonstrated that there exists a maximal possible fraction of particles F((ø) from a given fine-grained distribution that can evolve dissipationlessly to have a coarse-grained occupation number higher than a given value ø. This function F(ø) is obtained by packing the fine-grained distribution f(p) using the densest cells (highest f) first. For a kinetic equilibrium distribution, where/(p) is a decreasing function of p, the THL construction is equivalent to the momentum cut construction in the present paper. Whereas an actual galaxy formation process may not utilize phase space fully in this optimal way, something close to this would be expected if the process naturally picks low-momentum particles only (as would be the case for dwarf galaxies). There is also evidence from numerical simulations of massive neutrinos that phase space may be surprisingly well utilized on larger scales, cf. A. L. Melott, Phys. Rev. Lett. 48, 894 (1982);
    • (1982) Phys. Rev. Lett. , vol.48 , pp. 894
    • Melott, A.L.1
  • 20
    • 33744705644 scopus 로고
    • Astrophys. J. 264, 59 (1983).
    • (1983) Astrophys. J. , vol.264 , pp. 59


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.