Science with GRASP

Summary The GRASP mission has been studied by ESA as a candidate mission in Gamma-Ray Astronomy with Spectroscopy and Positioning. The key feature of the mission will be a high-resolution, Ge-based spectrometer, allowing for a resolution of the keV order ∼1 MeV, and a CsI imager, permitting source location accuracies approaching the arcminute over a wide field of view. GRASP, although not yet finally selected, has been placed as the first priority in the ESA astronomy ?medium? class missions, and is currently further studied as a candidate for use on a common bus with the ESA cornerstone XMM. To speed up publication, the proofs were not sent to the authors and were supervised by the Scientific Committee.