Penrose limits in non-Abelian T dual of Klebanov-Tseytlin background

In this paper we consider the Klebanov-Tseytlin background and its non-Abelian T -dual geometry along a suitably chosen S U (2 ) subgroup of isometries. We analyze the Penrose limits along various null geodesics of both geometries. We observe that the Klebanov-Tseytlin geometry does not admit any pp-wave solutions. However, the T -dual background gives rise to a pp-wave solution upon taking the Penrose limit along some appropriate null geodesic. We comment on the possible gauge theory dual for our pp-wave background.