When a gamma ray enters one in all BurstCube’s 4 detectors, it encounters a cesium iodide layer known as a scintillator, which converts it into seen mild. The sunshine then enters one other layer, an array of 116 silicon photomultipliers, that converts it right into a pulse of electrons, which is what BurstCube measures. For every gamma ray, the workforce sees one pulse within the instrument readout that gives the exact arrival time and vitality. The angled detectors inform the workforce of the final route of the occasion.