TY - RPRT TI - NANOGrav signal from axion inflation AU - Niu, Xuce (ORCID:0009000009661858) AU - Rahat, Moinul Hossain (ORCID:0000000163716426) PY - 2023 DO - 10.1103/physrevd.108.115023 UR - https://www.osti.gov/biblio/2229953 ID - 2229953 ER -