Cosmic Filament Spin from Dark Matter Vortices
Stephon Alexander, Christian Capanelli, Elisa G. M. Ferreira, Evan, McDonough

TL;DR
This paper proposes that dark matter vortices in ultra-light dark matter models can explain the observed spin of cosmic filaments, providing an alternative to traditional tidal torque explanations.
Contribution
It introduces a vortex-based model for cosmic filament spin in ultra-light dark matter theories, fitting observational data with a simple analytic approach.
Findings
Vortices can account for filament spin data
Constraints on dark matter vortex parameters
Supports ultra-light dark matter as a viable explanation
Abstract
The recent observational evidence for cosmic filament spin on megaparsec scales (Wang et al, Nature Astronomy 5, 839-845 (2021)) demands an explanation in the physics of dark matter. Conventional collisionless cold particle dark matter is conjectured to generate cosmic filament spin through tidal torquing, but this explanation requires extrapolating from the quasi-linear regime to the non-linear regime. Meanwhile no alternative explanation exists in the context of ultra-light (e.g., axion) dark matter, and indeed these models would naively predict zero spin for cosmic filaments. In this Letter we study cosmic filament spin in theories of ultra-light dark matter, such as ultra-light axions, and bosonic and fermionic condensates, such as superfluids and superconductors. These models are distinguished from conventional particle dark matter models by the possibility of dark matter vortices.…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsDark Matter and Cosmic Phenomena · Cosmology and Gravitation Theories · Atomic and Subatomic Physics Research
