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MPI for Gravitational Physics
MPI for Gravitational Physics
@mpi_grav@academiccloud.social  ·  activity timestamp 6 days ago

✨ New selected research highlight ✨

LISA on a tabletop

First milestone towards a hardware-in-the-loop testbed of the space-based gravitational-wave detector

ℹ️ https://www.aei.mpg.de/1413242/lisa-on-a-tabletop

📄 https://iopscience.iop.org/article/10.1088/1361-6382/ae4708

A team of @mpi_grav and @unihannover researchers has successfully demonstrated hardware simulations of the LISA inter-satellite links. Their hardware testbed uses field-programmable gate arrays, high-speed computer memory, and signal converters.

It can digitally simulate realistic delays, Doppler shifts, and the injection and recovery of gravitational-wave signals.

#LISA #GravitationalWaves #Research #Science #Space #Laser #FPGA

Four-paneled diagram showing various measurements: Top left: Full time series of the η composite measurements and the minimized TDI combination. Red and blue boxes indicate zoomed regions. Top right: zoom of the central region showing the inspiral revealed in the TDI combination, the injected inspiral waveform, and the subtraction of the latter from the former. Bottom left: zoom of the time around the coalescence, showing the same. Bottom right: Spectral densities of these time series with the LISA benchmark scaled by the TDI X1 transfer function. The residual noise floor described earlier is recovered, albeit with an uptick at the lowest frequency bin likely due to DC spectral leakage from the signal injection.
Four-paneled diagram showing various measurements: Top left: Full time series of the η composite measurements and the minimized TDI combination. Red and blue boxes indicate zoomed regions. Top right: zoom of the central region showing the inspiral revealed in the TDI combination, the injected inspiral waveform, and the subtraction of the latter from the former. Bottom left: zoom of the time around the coalescence, showing the same. Bottom right: Spectral densities of these time series with the LISA benchmark scaled by the TDI X1 transfer function. The residual noise floor described earlier is recovered, albeit with an uptick at the lowest frequency bin likely due to DC spectral leakage from the signal injection.
Four-paneled diagram showing various measurements: Top left: Full time series of the η composite measurements and the minimized TDI combination. Red and blue boxes indicate zoomed regions. Top right: zoom of the central region showing the inspiral revealed in the TDI combination, the injected inspiral waveform, and the subtraction of the latter from the former. Bottom left: zoom of the time around the coalescence, showing the same. Bottom right: Spectral densities of these time series with the LISA benchmark scaled by the TDI X1 transfer function. The residual noise floor described earlier is recovered, albeit with an uptick at the lowest frequency bin likely due to DC spectral leakage from the signal injection.

A Hardware Testbed for LISA Inter-Satellite Signals - IOPscienceSearch

A Hardware Testbed for LISA Inter-Satellite Signals, Ferguson, Reid, Mueller, Guido, Hartwig, Olaf

LISA on a tabletop

Innovative hardware simulations for the LISA gravitational wave detector pave the way for groundbreaking space-based research.
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