Year: 2025
Type: article
Abstract: Dark matter has been theorized to be charged under its own “dark electromagnetism” (dark-EM). Under this hypothesis, dark matter can behave like a cold collisionless plasma of self-interacting dark matter particles and exhibit plasmalike instabilities with observational consequences. Using the results published in [], which studied the degree of slowdown between two interpenetrating e − e + plasma clouds due to plasma instabilities, estimates of similar interactions for colliding “dark plasmas” are explored. Comparison with astronomical observations reveals strong new constraints on dark-EM with the dark electromagnetic self-interaction α D < 4 × 10 − 25 .
Authors: K. Schoeffler, N. Shukla, L. O. Silva
Institutions: Instituto Superior Técnico, Ruhr University Bochum, Cineca
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4409541976