Abstract
Ramanujan's Bessel index integral
\[ \int_{-\infty}^{\infty} J_{\mu - \xi}(t) J_{\nu + \xi}(t) \, d\xi \]
and several extensions are evaluated by an alternative method.
Ramanujan's Bessel index integral
\[ \int_{-\infty}^{\infty} J_{\mu - \xi}(t) J_{\nu + \xi}(t) \, d\xi \]
and several extensions are evaluated by an alternative method.