The Possible Indications of Low-Frequency Gravitational Waves Associated with a Gamma-Ray Burst GRB 051103 in LIGO pre-S5 Data

The noise sources of gravitational wave detectors for ground-based laser interferometers by example of LIGO were analyzed. As shown the low-frequency gravitational waves (GW) cause to changes in the detectors’ dynamic properties, which manifested as the Q-factor’s changes of lowfrequency seismic component in a detectors’ integral noise that leads to the possibility of indirect GW’s observation in the frequency range (~ 100 Hz) of a detectors’ extreme sensitivity. The results of public LIGO data associated with gamma-ray burst GRB 051103 and the experimental estimation of GW’s properties by results of indirect observation are presented.