Nonthermal axion dark radiation and constraints
نویسندگان
چکیده
Anupam Mazumdar, Saleh Qutub, and Ken’ichi Saikawa Consortium for Fundamental Physics, Physics Department, Lancaster University, Lancaster LA1 4YB, United Kingdom Kapteyn Astronomical Institute, University of Groningen, 9700 AV Groningen, Netherlands Department of Astronomy, King Abdulaziz University, Jeddah 21589, Saudi Arabia Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany (Received 3 August 2016; published 22 September 2016)
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