HEP Phenomenology2026-04-302 minarXiv:2605.00103expressAxion Stars: Gravitational Clumps of Dark MatterAxions are hypothetical elementary particles introduced in 1977 by Roberto Peccei and Helen Quinn to resolve the so-called strong CP problem in the Standard Model of particle physics.Edward Hardy·Noelia Sánchez González·Henry Stubbs·Lorenzo TranchedoneAdam RiessAlan GuthAlbert Einsteinaxionprimordial black holegalaxy clusterdark matter👍👎☆SimplePopularAdvanced