Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
Initial Noise Reduction Pipeline
The main role of the Initial Noise Reduction Pipeline is to reduce dominating noise sources by several orders of magnitude.
Left: PSDs of the optimal TDI 2.0 combinations A, E, and T in fractional frequency fluctuations. Right: ASDs in displacement. The figure demonstrates L1 requirements for a typical offline pipeline with 24 hours of data processed with downsampled rate of 4 Hz. Different coloured curves show TDI post-processed residuals for the 6 laser locking configurations. As is evident, most impact of the laser locking scheme is at the frequencies where MBHBs radiate and merge. Most difference in the frequencies above milliHz, can be attributed to statistical differences from conversion of time series to PSDs, number of segments per average, etc.
Left: PSDs of the optimal TDI 2.0 combinations A, E, and T in fractional frequency fluctuations. Right: ASDs in displacement. The figure demonstrates L1 requirements for a typical offline pipeline with 24 hours of data processed with downsampled rate of 4 Hz. Different coloured curves show TDI post-processed residuals for the 6 laser locking configurations. As is evident, most impact of the laser locking scheme is at the frequencies where MBHBs radiate and merge. Most difference in the frequencies above milliHz, can be attributed to statistical differences from conversion of time series to PSDs, number of segments per average, etc.
The INReP project aimed to demonstrate at the ESA Mission Milestone: “Mission Formulation Review (MFR)” with increasing level of confidence that the envisaged initial on-ground processing steps to suppress the major known sources of noise in the raw LISA data are sufficiently well understood and functioning
The main role of INReP is to reduce dominating noise sources by several orders of magnitude, in particular laser noise, clock noise, longitudinal S/C jitter noises, other secondary noise, clock noise, and tilt-to-length noise. It also synchronises all its output to a reference time, i.e. TCB.
In order to reduce noise it applies the TDI method and other algorithms such as extended Kalman filters dedicated for space interferometry for precisely estimating armlength and clock differences.
The November of Science at the Max Planck Institute for Gravitational Physics (Albert Einstein Institute) and the Institute for Gravitational Physics of Leibniz Universität Hannover with seven exciting events
The gravitational-wave and experimental astrophysicist will establish a third department at the Max Planck Institute for Gravitational Physics in Hannover
