Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Sokasian, A."'
Publikováno v:
Mon.Not.Roy.Astron.Soc.350:47,2004
We combine fast radiative transfer calculations with high resolution hydrodynamical simulations to study an epoch of early hydrogen reionisation by primordial stellar sources at redshifts 15
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307451
Publikováno v:
Astrophys.J. 598 (2003) 73-85
(abridged) We study high redshift structure formation and reionization in a LCDM universe under the assumption that the spectral power index of primordial density fluctuations is a function of length scale. We adopt a particular formulation of the ru
Externí odkaz:
http://arxiv.org/abs/astro-ph/0305517
Publikováno v:
Mon.Not.Roy.Astron.Soc. 347 (2004) 187
We study the observability of the reionization epoch through the 21 cm hyperfine transition of neutral hydrogen. We use a high-resolution cosmological simulation (including hydrodynamics) together with a fast radiative transfer algorithm to compute t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0305065
Publikováno v:
Astrophys.J.591:L1-L4,2003
We study first structure formation in Lambda-dominated universes using large cosmological N-body/SPH simulations. We consider a standard LCDM model and a LWDM model in which the mass of the dark matter particles is taken to be m_X=10 keV. The linear
Externí odkaz:
http://arxiv.org/abs/astro-ph/0303622
Using radiative transfer calculations and cosmological simulations of structure formation, we study constraints that can be placed on the nature of the cosmic ultraviolet (UV) background in the redshift interval 2.5< z <5. Our approach makes use of o
Externí odkaz:
http://arxiv.org/abs/astro-ph/0206428
Publikováno v:
Mon.Not.Roy.Astron.Soc. 332 (2002) 601
We study the reionization of Helium II by quasars using a numerical approach that combines 3D radiative transfer calculations with cosmological hydrodynamical simulations. Sources producing the ionizing radiation are selected according to an empirica
Externí odkaz:
http://arxiv.org/abs/astro-ph/0112297
The incorporation of radiative transfer effects into cosmological hydrodynamical simulations is essential for understanding how the intergalactic medium (IGM) makes the transition from a neutral medium to one that is almost fully ionized. Here, we pr
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105181
We estimate the contribution of extragalactic radio sources to fluctuations in sky temperature over the range of frequencies (10-300 GHz) used for Cosmic Microwave Background (CMB) anisotropy measurements. CMB anisotropy observations at high resoluti
Externí odkaz:
http://arxiv.org/abs/astro-ph/9811311
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 344:607-624
We study the reionisation of the Universe by stellar sources using a numerical approach that combines fast 3D radiative transfer calculations with high resolution hydrodynamical simulations. Ionising fluxes for the sources are derived from intrinsic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::891aed1862275a009b0ac448a3a599aa
https://doi.org/10.1046/j.1365-8711.2003.06847.x
https://doi.org/10.1046/j.1365-8711.2003.06847.x
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 340:473-484
Using radiative transfer calculations and cosmological simulations of structure formation, we study constraints that can be placed on the nature of the cosmic ultraviolet (UV) background in the redshift interval 2.5 ≲z≲ 5. Our approach makes use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3cc190877c3eb0260113e3e109f8a153
https://doi.org/10.1046/j.1365-8711.2003.06308.x
https://doi.org/10.1046/j.1365-8711.2003.06308.x