Search: onr:"swepub:oai:DiVA.org:su-32505" >
Particle Models and...
-
Bringmann, TorstenStockholms universitet,Fysikum,The Oskar Klein Centre for Cosmoparticle Physics
(author)
Particle Models and the Small-Scale Structure of Dark Matter
- Article/chapterEnglish2009
Publisher, publication year, extent ...
-
2009-10-16
-
IOP Publishing,2009
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:su-32505
-
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-32505URI
-
https://doi.org/10.1088/1367-2630/11/10/105027DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
The kinetic decoupling of weakly interacting massive particles (WIMPs) in the early universe sets a scale that can directly be translated into a small-scale cutoff in the spectrum of matter density fluctuations. The formalism presented here allows a precise description of the decoupling process and thus the determination of this scale to a high accuracy from the details of the underlying WIMP microphysics. With decoupling temperatures of several MeV to a few GeV, the smallest protohalos to be formed range between 10^{-11} and almost 10^{-3} solar masses -- a somewhat smaller range than what was found earlier using order-of-magnitude estimates for the decoupling temperature; for a given WIMP model, the actual cutoff mass is typically about a factor of 10 greater than derived in that way, though in some cases the difference may be as large as a factor of several 100. Observational consequences and prospects to probe this small-scale cutoff, which would provide a fascinating new window into the particle nature of dark matter, are discussed.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Stockholms universitetFysikum
(creator_code:org_t)
Related titles
-
In:New Journal of Physics: IOP Publishing11, s. 105027-1367-2630
Internet link
Find in a library
To the university's database