On the initial conditions of the νHDM cosmological model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510230" target="_blank" >RIV/00216208:11320/25:10510230 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=F_vyz0djyD" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=F_vyz0djyD</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/staf1041" target="_blank" >10.1093/mnras/staf1041</a>
Alternative languages
Result language
angličtina
Original language name
On the initial conditions of the νHDM cosmological model
Original language description
The nu HDM is the only cosmological model based on Milgromian dynamics (MOND) with available structure formation simulations. While MOND accounts for galaxies, with a priori predictions for spirals and ellipticals, a light sterile neutrino of 11 eV can assist in recovering scaling relations on the galaxy-cluster scales. In order to perform MONDian cosmological simulations in this theoretical approach, initial conditions derived from a fit to the angular power spectrum of cosmic microwave background (CMB) fluctuations are required. In this work, we employ CosmoSIS to perform a Bayesian study of the nu HDM model. Using the best-fitting values of the posterior, the CMB power spectrum is re-evaluated. The excess of power in the transfer function implies a distinct evolution scenario, which can be used further as an input for a set of hydro-dynamical calculations. The resulting values H-0 approximate to 56 km s(-1) Mpc(-1) and Omega(m0)approximate to 0.5 are far from agreement with respect to the best-fitting ones in the canonical Cold Dark Matter model, but may be significant in MONDian cosmology. The assumed Planck CMB initial conditions are only valid for the lambda cold dark matter (Lambda CDM) cosmology. This work constitutes a first step in an iterative procedure needed to disentangle the model dependence of the derived initial density and velocity fields.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
1365-2966
Volume of the periodical
541
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
14
Pages from-to
784-797
UT code for WoS article
001523415200001
EID of the result in the Scopus database
2-s2.0-105010489015