October 16, 2017
On 17 August 2017, for the first time, light – or electromagnetic radiation to be precise – has been associated with a gravitational wave signal. The GBM instrument aboard the Fermi satellite was the first to trigger on a new source at highly energetic gamma rays, which was soon confirmed by the INTEGRAL satellite. Subsequent observations by GROND later captured a fading transient at optical and near-infrared wavelengths. Scientists at the Max Planck Institute for Extraterrestrial physics contributed to this exciting discovery from the start and confirmed its origin as being the merger of two neutron stars.