Speaker
Description
Newtonian noise is a key low-frequency noise source for the Einstein Telescope and may include transient bursts generated by anthropogenic activity. Unlike stationary Gaussian noise, such bursts can be strongly non-Gaussian and may therefore affect searches for short-duration gravitational-wave burst signals. In the triangular ET configuration, these disturbances may also be correlated between detectors, potentially modifying the background of burst searches.
In this work, we study how correlated Newtonian-noise bursts affect background and false-alarm estimation when the assumption of independent detector noise is violated. In particular, we assess the validity of time-slide background estimation in the presence of such correlations and examine the role of the ET null stream in identifying and characterising these noise transients.