On the possible gamma-ray burst -- gravitational wave association in GW150914

Understand

Data from the Fermi Gamma-ray Burst Monitor satellite observatory suggested that the recently discovered gravitational wave source, a pair of two coalescing black holes, was related to a gamma-ray burst.

• The observed high-energy electromagnetic radiation (above 50 keV) originated from a weak transient source and lasted for about 1 second.
• Its localization is consistent with the direction to GW150914.
• We speculate about the possible scenario for the formation of a gamma-ray burst accompanied by the gravitational-wave signal.