Time Decay of Linearized Isentropic 2D Bipolar Navier-Stokes-Poisson System Hongmei XU and Xiaoxiao GUO Wuhan Univ. J. Nat. Sci., 30 2 (2025) 103-110 Published online: 16 May 2025 DOI: 10.1051/wujns/2025302103