Looking at Infrared Background Radiation Anisotropies with Spitzer. II. Small Scale Anisotropies and their Implications for New and Upcoming Space Surveys
Abstract
Abstract Spitzer-based source-subtracted cosmic infrared background (CIB) fluctuations at arcminute-to-degree scales indicate the presence of new populations, whereas subarcminute power arises from known z ≲ 6 galaxies. We reconstruct the evolution of the near-IR CIB anisotropies on subarcminute scales by known galaxy populations. This method is based on, and significantly advanced over, the empirical reconstruction by Helgason et al. which is combined with the halo model connecting galaxies to their host dark matter halos. The modeled CIB fluctuations from known galaxies produce the majority of the observed small-scale signal down to statistical uncertainties of
Fields of Study & Subjects
Galaxies: Formation
Evolution
Phenomena
Astronomy and Astrophysical Research
Gamma-ray bursts and supernovae
Publication details
- Journal / source
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Volume
- 999
- Issue
- 1
- Pages
- 29–29
- Publication date
- 24 February 2026
- Language
- EN