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astro-ph.CO2026
Constraints on the Injection of Radiation in the Early Universe
Melissa Joseph, Jason Kumar, Pearl Sandick
We consider the generic injection of radiation (both dark and electromagnetic) during the epoch between big bang nucleosynthesis (BBN) and recombination. The contribution of the ad…
astro-ph.CO2025
InterACTing dark radiation models after ACT
William Cvetko, Melissa Joseph, Gustavo Marques-Tavares
In this work we assess the implications of the Atacama Cosmology Telescope DR6 measurements for two interacting dark radiation scenarios previously shown to mitigate the Hubble ten…
astro-ph.CO2024
Stepping into the Forest: Confronting Interacting Radiation Models for the Hubble Tension with Lyman- Data
Hengameh Bagherian, Melissa Joseph, Martin Schmaltz +1
Models of interacting dark radiation have been shown to alleviate the Hubble tension. Extensions incorporating a coupling between dark matter and dark radiation (DM-DR) have been p…