Micrometeoroid Events in LISA Pathfinder

Thorpe, James; Slutsky, J.; Baker, John G.; Littenberg, T. B.; Hourihane, S.; Pagane, Nicole; Pokorný, Petr; Janches, Diego; Armano, M.; Audley, H.; Auger, G.; Baird, J.; Bassan, M.; Binétruy, P.; Born, M.; Bortoluzzi, D.; Brandt, N.; Caleno, M.; Cavalleri, A.; Cesarini, A.; Cruise, A. M.; Danzmann, K.; Silva, M. de Deus; Rosa, R. De; Fiore, L. Di; Diepholz, I.; Dixon, G. J.; Dolesi, R.; Dunbar, N.; Ferraioli, L.; Ferroni, V.; Fitzsimons, E.; Flatscher, R.; Freschi, M.; Marirrodriga, C. García; Gerndt, R.; Gesa, L.; Gibert, F.; Giardini, Domenico; Giusteri, R.; Grado, A.; Grimani, C.; Grzymisch, J.; Harrison, I.; Heinzel, Gerhard; Hewitson, M.; Hollington, D.; Hoyland, D.; Hueller, M.; Inchauspé, H.; Jennrich, O.; Jetzer, Philippe; Johlander, B.; Karnesis, Nikolaos; Kaune, B.; Korsakova, Natalia; Killow, C. J.; Lobo, J. A.; Lloro, I.; Liu, L.; López-Zaragoza, J. P.; Maarschalkerweerd, R.; Mance, D.; Martín, Vicente; Martin-Polo, L.; Martino, J.; Martín-Porqueras, F.; Madden, S.; Mateos, I.; McNamara, P. W.; Mendes, José F. G.; Mendes, L.; Nofrarias, M.; Paczkowski, S.; Perreur-Lloyd, M.; Petiteau, Antoine; Pivato, P.; Plagnol, E.; Prat, P.; Ragnit, U.; Ramos‐Castro, J.; Reiche, J.; Robertson, D. I.; Rozemeijer, H.; Rivas, F.; Russano, G.; Sarra, Paolo; Schleicher, A.; Shaul, D.; Sopuerta, Carlos F.; Stanga, R.; Sumner, T. J.; Texier, D.; Trenkel, C.; Tröbs, Michael; Vetrugno, D.; Vitale, S.; Wanner, Gudrun; Ward, H.; Wass, Peter; Wealthy, D.; Weber, William J.; Wissel, L.; Wittchen, A.; Zambotti, Andrea; Zanoni, C.; Ziegler, T.; Zweifel, Peter; Barela, Phillip; Cutler, Curt; Demmons, Nathaniel; Dunn, Charles; Girard, M. A.; Hsu, Oscar; Javidnia, Shahram; Li, I.; Maghami, Peiman G.; Marrese-Reading, Colleen; Mehta, Jitendra; O’Donnell, Jim; Romero-Wolf, A.; Ziemer, John

doi:10.3847/1538-4357/ab3649

Cited by 18 publications

(7 citation statements)

References 32 publications

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“…In addition to the glitches described above, we found a few signals in ∆g caused by the impact of the spacecraft with micrometeoroids. The impact caused a well identified acceleration of the spacecraft [17]. As mentioned in Sec.…”

Section: Other Spurious Signals In the Datamentioning

confidence: 61%

Transient acceleration events in LISA Pathfinder data: Properties and possible physical origin

Armano¹,

Audley²,

Baird

et al. 2022

Phys. Rev. D

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We present an in depth analysis of the transient events, or glitches, detected at a rate of about one per day in the differential acceleration data of LISA Pathfinder. We show that these glitches fall in two rather distinct categories: fast transients in the interferometric motion readout on one side, and true force transient events on the other. The former are fast and rare in ordinary conditions. The second may last from seconds to hours and constitute the majority of the glitches. We present an analysis of the physical and statistical properties of both categories, including a cross-analysis with other time series like magnetic fields, temperature, and other dynamical variables. Based on these analyses we discuss the possible sources of the force glitches and identify the most likely, among which the outgassing environment surrounding the test-masses stands out. We discuss the impact of these findings on the LISA design and operation, and some risk mitigation measures, including experimental studies that may be conducted on the ground, aimed at clarifying some of the questions left open by our analysis.

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Section: Other Spurious Signals In the Datamentioning

confidence: 61%

Transient acceleration events in LISA Pathfinder data: Properties and possible physical origin

Armano¹,

Audley²,

Baird

et al. 2022

Phys. Rev. D

Self Cite

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“…Note that these unmodeled perturbations in the differential acceleration measurements are different from micrometeorids impacts considered by the authors of Ref. [5], which are detected with satellite position telemetry.…”

Section: Introductionmentioning

confidence: 69%

Detection and characterization of instrumental transients in LISA Pathfinder and their projection to LISA

Baghi,

Korsakova,

Slutsky

et al. 2021

Preprint

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“…The meteoroid model used here has been successful at reproducing the meteoroid number flux for the LISA Pathfinder spacecraft (Thorpe et al 2019), which was sensitive to impacts with momentum >1.0 μNs with 100% efficiency. This translates to impactor diameters D ≈ 35-45 μm for impact velocities between V imp = 10-20 km s −1 and particle bulk density ρ = 2000 kg m −3 .…”

Section: Results: Meteoroid Model Impacts On Juno Solar Arraysmentioning

confidence: 99%

Modeling Meteoroid Impacts on the Juno Spacecraft

et al. 2022

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Events which meet certain criteria from star-tracker images on board the Juno spacecraft have been proposed to be due to interplanetary dust particle impacts on its solar arrays. These events have been suggested to be caused by particles with diameters larger than 10 μm. Here, we compare the reported event rates to expected dust-impact rates using dynamical meteoroid models for the four most abundant meteoroid/dust populations in the inner solar system. We find that the dust-impact rates predicted by dynamical meteoroid models are not compatible with either the Juno observations in terms of the number of star-tracker events per day, or with the variations of dust flux on Juno’s solar panels with time and position in the solar system. For example, the rate of star-tracker events on Juno’s antisunward surfaces is the largest during a period in which Juno is expected to experience the peak impact fluxes on the opposite, sunward hemisphere. We also investigate the hypothesis of dust leaving the Martian Hill sphere originating either from the surface of Mars itself or from one of its moons. We do not find such a hypothetical source to be able to reproduce the star-tracker event-rate variations observed by Juno. We conclude that the star-tracker events observed by Juno are unlikely to be the result of instantaneous impacts from the zodiacal cloud.

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Micrometeoroid Events in LISA Pathfinder

Cited by 18 publications

References 32 publications

Transient acceleration events in LISA Pathfinder data: Properties and possible physical origin

Transient acceleration events in LISA Pathfinder data: Properties and possible physical origin

Detection and characterization of instrumental transients in LISA Pathfinder and their projection to LISA

Modeling Meteoroid Impacts on the Juno Spacecraft

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