Polar harmonic Maass forms and their applications
  In this survey, we present recent results of the authors about non-meromorphic modular objects known as polar harmonic Maass forms. These include the computation of Fourier coefficients of meromorphic modular forms and relations between inner products of meromorphic modular forms and higher Green's functions evaluated at CM-points. 
Kathrin Bringmann and Ben Kane
math.NT