摘要：Aims. The Fermi collaboration identified a possible
electromagnetic counterpart of the gravitational wave event of September 14, 2015. Our
goal is to provide an unsupervised data analysis algorithm to identify similar events in
Fermi’s Gamma-ray Burst Monitor CTTE data stream.
Methods. We are looking for signals that are typically weak. Therefore,
they can only be found by a careful analysis of count rates of all detectors and energy
channels simultaneously. Our Automatized Detector Weight Optimization (ADWO) method
consists of a search for the signal, and a test of its significance.
Results. We developed ADWO, a virtual detector analysis tool for
multi-channel multi-detector signals, and performed successful searches for short
transients in the data-streams. We have identified GRB150522B, as well as possible
electromagnetic candidates of the transients GW150914 and LVT151012.
Conclusions. ADWO is an independently developed, unsupervised data
analysis tool that only relies on the raw data of the Fermi satellite. It
can therefore provide a strong, independent test to any electromagnetic signal
accompanying future gravitational wave observations.
