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Spacecraft and interplanetary contributions to the magnetic environment on-board LISA Pathfinder
- Source :
- Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 494 (2), pp.3014-3027. ⟨10.1093/mnras/staa830⟩, UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Monthly Notices of the Royal Astronomical Society, 2020, 494 (2), pp.3014-3027. ⟨10.1093/mnras/staa830⟩
- Publication Year :
- 2020
-
Abstract
- LISA Pathfinder (LPF) has been a space-based mission designed to test new technologies that will be required for a gravitational wave observatory in space. Magnetically driven forces play a key role in the instrument sensitivity in the low-frequency regime (mHz and below), the measurement band of interest for a space-based observatory. The magnetic field can couple to the magnetic susceptibility and remanent magnetic moment from the test masses and disturb them from their geodesic movement. LISA Pathfinder carried on-board a dedicated magnetic measurement subsystem with noise levels of 10 $ \rm nT \ Hz^{-1/2}$ from 1 Hz down to 1 mHz. In this paper we report on the magnetic measurements throughout LISA Pathfinder operations. We characterise the magnetic environment within the spacecraft, study the time evolution of the magnetic field and its stability down to 20 $\mu$Hz, where we measure values around 200 $ \rm nT \ Hz^{-1/2}$ and identify two different frequency regimes, one related to the interplanetary magnetic field and the other to the magnetic field originating inside the spacecraft. Finally, we characterise the non-stationary component of the fluctuations of the magnetic field below the mHz and relate them to the dynamics of the solar wind.<br />Comment: 16 pages, 17 figures. MNRAS LaTeX style file version 3.0
- Subjects :
- Gravitational-wave observatory
magnetic moment
magnetic fields
01 natural sciences
Interplanetary magnetic field
space vehicles: instruments
Física::Relativitat::Gravitació [Àrees temàtiques de la UPC]
010303 astronomy & astrophysics
magnetic field: fluctuation
susceptibility: magnetic
Physics
Magnetic moment
Astrophysics::Instrumentation and Methods for Astrophysics
solar
Magnetic field
observatory
Solar wind
gravitational waves
SOLAR-WIND
Physical Sciences
Physics::Space Physics
Astrophysics - Instrumentation and Methods for Astrophysics
geodesic
noise
FOS: Physical sciences
Astronomy & Astrophysics
gravitational waves -magnetic fields -space vehicles: instruments
Gravitational waves
Ones gravitacionals
0103 physical sciences
0201 Astronomical and Space Sciences
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
010306 general physics
Instrumentation and Methods for Astrophysics (astro-ph.IM)
LISA
Science & Technology
Spacecraft
business.industry
gravitational radiation
Astronomy and Astrophysics
Space vehicles
stability
sensitivity
Magnetic susceptibility
Computational physics
Space and Planetary Science
Magnetic fields
Interplanetary spaceflight
business
Instruments
Subjects
Details
- Language :
- English
- ISSN :
- 00358711 and 13652966
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 494 (2), pp.3014-3027. ⟨10.1093/mnras/staa830⟩, UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Monthly Notices of the Royal Astronomical Society, 2020, 494 (2), pp.3014-3027. ⟨10.1093/mnras/staa830⟩
- Accession number :
- edsair.doi.dedup.....8bcc5b38742f1c7ff169859431d4cf81