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We analyze cosmic superstring models in light of NANOGrav 15-year pulsartiming data. A good fit is found for a string tension $G \mu \sim 10^{-12} -10^{-11}$ and a string intercommutation probability $p \sim 10^{-3} - 10^{-1}$.Extrapolation to higher frequencies assuming standard Big Bang cosmology iscompatible at the 68\% CL with the current LIGO/Virgo/KAGRA upper limit on astochastic gravitational wave background in the 10 to 100 Hz range. Thesuperstring interpretation of the NANOGrav data would be robustly testable byfuture experiments even in modified cosmological scenarios.

Cosmic Superstrings Revisited in Light of NANOGrav 15-Year Data