Dissipationless clustering of neutrinos around a cosmic-string loop

Details Dissipationless clustering of neutrinos around a cosmic-string loop Dissipationless clustering of neutrinos around a cosmic-string loop

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvd..36.2242b&link_type=abstract

Physical Review D (Particles and Fields), Volume 36, Issue 8, 15 October 1987, pp.2242-2249

Physics

42

Scientific paper

The dissipationless clustering of weakly interacting massive neutrinos about a nonadiabatic pointlike seed perturbation (e.g., a cosmic-string loop) is studied. The clustering is described by the Liouville equation in an expanding universe which can be transformed into an integral equation for the density perturbation in Fourier space (the Gilbert equation). The analysis yields an accurate determination of the density profile about a seed, and a value for the maximal effective Jeans length 8h50 -2 Mpc, where h50 is the expansion rate in units of 50 km s-1 Mpc-1.

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