Work

Bound Domains

Year: 2025

Type: article

Abstract: How much energy is required to unbind baryons from the cosmological structures that originally bind them? This tutorial article explains why trying to answer this question using just a halo model can be misleading. Instead, it recommends parsing the universe into “bound domains,” which are the gravitationally bound structures that ultimately become widely separated islands as the universe evolves. It explains why a bound domain’s potential well was about as deep ∼1 Gyr after the Big Bang as it is now, and it outlines how future research might take advantage of a bound-domain approach to make progress on some open questions about the baryon distributions in and around galaxy groups and clusters.

Source: Publications of the Astronomical Society of the Pacific

DOI: 10.1088/1538-3873/adb0ef

Author: G. Mark Voit

Institution: Michigan State University

Language: English

Topic: Galaxies: Formation, Evolution, Phenomena

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,325

Funder: National Science Foundation