منابع مشابه
The first WIMPy halos
Dark matter direct and indirect detection signals depend crucially on the dark matter distribution. While the formation of large scale structure is independent of the nature of the cold dark matter (CDM), the fate of inhomogeneities on sub-galactic scales, and hence the present day CDM distribution on these scales, depends on the micro-physics of the CDM particles. We study the density contrast...
متن کاملThe First Halos *
The size and time of formation of the first gravitationally bound objects in the Universe is set by the microphysical properties of the dark matter. It is argued that observations seem to favour cold and thermal candidates for the main contribution to the dark matter. For that type of dark matter, the size and time of formation of the first halos is determined by the elastic cross sections and ...
متن کاملThe clustering of the first galaxy halos ⋆
We explore the clustering properties of high redshift dark matter haloes, focusing on haloes massive enough to host early generations of stars or galaxies at redshift 10 and greater. Haloes are extracted from an array of dark matter simulations able to resolve down to the “mini-halo” mass scale at redshifts as high as 30, thus encompassing the expected full mass range of haloes capable of hosti...
متن کاملPhotoevaporation of Satellite Halos by the First Stars
We present numerical simulations of the photoevaporation of cosmological halos clustered around a 120 M⊙ primordial star, confining our study to structures capable of hosting Population III star formation. The calculations include self-consistent multifrequency conservative transfer of UV photons together with nine-species primordial chemistry and all relevant radiative processes. The ultimate ...
متن کاملPhotoionization of Clustered Halos by the First Stars
We present numerical simulations of the photoevaporation of cosmological halos clustered around a 120 M⊙ primordial star, confining our study to structures capable of hosting Population III star formation. The calculations include self-consistent multifrequency conservative transfer of UV photons together with nine-species primordial chemistry and all relevant radiative processes. The ultimate ...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2005
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2005/08/003