Subconvex bound for Rankin-Selberg $L$-functions in prime power level

Aritra Ghosh

Let $f$ be a $p$-primitive cusp form of level $p^{4r}$, where local representation of $f$ be supercuspidal at $p$, $p$ being an odd prime, $r\ge 1$ and $g$ be a Hecke-Maass or hol…