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- W4380353762 abstract "A significant excess of the stellar mass density at high redshift has been discovered from the early data release of James Webb Space Telescope ($it{JWST}$), and it may require a high star formation efficiency. However, this will lead to large number density of ionizing photons in the epoch of reionization (EoR), so that the reionization history will be changed, which can arise tension with the current EoR observations. Warm dark matter (WDM), via the free streaming effect, can suppress the formation of small-scale structure as well as low-mass galaxies. This provides an effective way to decrease the ionizing photons when considering a large star formation efficiency in high-$z$ massive galaxies without altering the cosmic reionization history. On the other hand, the constraints on the properties of warm dark matter can be derived from the $it JWST$ observations. In this work, we study WDM as a possible solution to reconcile the $it JWST$ stellar mass density of high-$z$ massive galaxies and reionization history. We find that the WDM particle mass with $m_{text{W}}sim0.6$ keV can match both the $it JWST$ high-$z$ comoving cumulative stellar mass density and the reionization history, for a star formation efficiency parameter range $f_{*}^{0} = 0.1 - 1.0$." @default.
- W4380353762 created "2023-06-13" @default.
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- W4380353762 date "2023-06-08" @default.
- W4380353762 modified "2023-09-27" @default.
- W4380353762 title "Implications of the Stellar Mass Density of High-$z$ Massive Galaxies from JWST on Warm Dark Matter" @default.
- W4380353762 doi "https://doi.org/10.48550/arxiv.2306.05648" @default.
- W4380353762 hasPublicationYear "2023" @default.
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