The Laser Interferometer Space Antenna (LISA) of the European Agency (ESA) will be first low-frequency gravitational-wave observatory orbiting Sun at 1 AU. LISA Pathfinder (LPF) mission, aiming testing instruments to located on board spacecraft (S/C), hosted, among others, fluxgate magnetometers and a particle detector as parts diagnostics subsystem. These allowed us estimate magnetic Coulomb s...

LISA (Laser Interferometer Space Antenna) is a proposed space mission, which will use coherent laser beams exchanged between three remote spacecraft to detect and study low-frequency cosmic gravitational radiation. In the low-part of its frequency band, the LISA strain sensitivity will be dominated by the incoherent superposition of hundreds of millions of gravitational wave signals radiated by...

The LTP (LISA Testflight Package), to be flown aboard the ESA / NASA LISA Pathfinder mission, aims to demonstrate drag-free control for LISA test masses with acceleration noise below 30 fm /s/ √ Hz from 1-30 mHz. This paper describes the LTP measurement of random, position independent forces acting on the test masses. In addition to putting an overall upper limit for all source of random force ...

We have developed a torsion pendulum facility for LISA gravitational reference sensor ground testing that allows us to put significant upper limits on residual stray forces exerted by LISA-like position sensors on a representative test mass and to characterize specific sources of disturbances for LISA. We present here the details of the facility, the experimental procedures used to maximize its...