TITLE:
Are James Webb Space Telescope Observations Consistent with Warm Dark Matter?
AUTHORS:
Bruce Hoeneisen
KEYWORDS:
James Webb Space Telescope, JWST, Warm Dark Matter
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.14 No.1,
March
27,
2024
ABSTRACT: We compare observed with predicted distributions of galaxy stellar massesM*and galaxy rest-frame ultra-violet luminosities per unit bandwidth LUV, in the redshift range z=2to 13. The comparison is presented as a function of the comoving warm dark matter free-streaming cut-off wavenumber kfs. For this comparison the theory is a minimal extension of the Press-Schechter formalism with only two parameters: the star formation efficiency, and a proportionality factor between the star formation rate per galaxy and LUV. These two parameters are fixed to their values obtained prior to the James Webb Space Telescope (JWST) data. The purpose of this comparison is to identify if, and where, detailed astrophysical evolution is needed to account for the new JWST observations.