English

Little Red reionization factories

Astrophysics of Galaxies 2025-08-20 v1

Abstract

In this note, we suggest the possibility that an elucidation of the nature of the numerous Little Red Dots (LRDs) at high redshifts, may facilitate the resolution of another concurrent cosmic puzzle, namely reionization. Specifically, it is hypothesized that intergalactic HI gas is compelled by the tidal field associated with a growing gravitational entropy, in the form of gas streams, into colliding at the LRD sites. The resulting shock heating and compression encourage starburst activities, which subsequently photo-ionize the gas into HII, that in turn shines into the rest-optical via bremsstrahlung radiation within the minimal-timescale-cutoff (i.e., red) regime, before escaping back into the intergalactic space, propelled by the newly fusion-injected energy.

Keywords

Cite

@article{arxiv.2508.13541,
  title  = {Little Red reionization factories},
  author = {Fan Zhang},
  journal= {arXiv preprint arXiv:2508.13541},
  year   = {2025}
}

Comments

9 pages, 2 figures

R2 v1 2026-07-01T04:56:05.209Z