Micrometeoroid events in LISA Pathfinder

The zodiacal dust complex, a population of dust and small particles that pervades the solar system, provides important insight into the formation and dynamics of planets, comets, asteroids, and other bodies. We present a new set of data obtained from direct measurements of momentum transfer to a spa...

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Autores: Thorpe, J. I., Slutsky, J., Baker, John G., Ramos Castro, Juan José|||0000-0001-9413-2001
Formato: artículo
Fecha de publicación:2019
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/172585
Acesso em linha:https://hdl.handle.net/2117/172585
https://dx.doi.org/10.3847/1538-4357/ab3649
Access Level:acceso abierto
Palavra-chave:Astrophysics
Solar system
Instrumentation: miscellaneous
Meteorites
Meteors
Meteoroids
Astrofísica
Sistema solar
Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
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oai_identifier_str oai:upcommons.upc.edu:2117/172585
network_acronym_str ES
network_name_str España
repository_id_str
spelling Micrometeoroid events in LISA PathfinderThorpe, J. I.Slutsky, J.Baker, John G.Ramos Castro, Juan José|||0000-0001-9413-2001AstrophysicsSolar systemInstrumentation: miscellaneousMeteoritesMeteorsMeteoroidsAstrofísicaSistema solarÀrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesuraÀrees temàtiques de la UPC::Física::Astronomia i astrofísicaThe zodiacal dust complex, a population of dust and small particles that pervades the solar system, provides important insight into the formation and dynamics of planets, comets, asteroids, and other bodies. We present a new set of data obtained from direct measurements of momentum transfer to a spacecraft from individual particle impacts. This technique is made possible by the extreme precision of the instruments flown on the LISA Pathfinder spacecraft, a technology demonstrator for a future space-based gravitational wave observatory. Pathfinder employed a technique known as drag-free control that achieved rejection of external disturbances, including particle impacts, using a micropropulsion system. Using a simple model of the impacts and knowledge of the control system, we show that it is possible to detect impacts and measure properties such as the transferred momentum, direction of travel, and location of impact on the spacecraft. In this paper, we present the results of a systematic search for impacts during 4348 hr of Pathfinder data. We report a total of 54 candidates with transferred momenta ranging from 0.2 to 230 µNs. We furthermore make a comparison of these candidates with models of micrometeoroid populations in the inner solar system, including those resulting from Jupiter-family comets (JFCs), Oort Cloud comets, Halley-type comets, and asteroids. We find that our measured population is consistent with a population dominated by JFCs, with some evidence for a smaller contribution from Halley-type comets, in agreement with consensus models of the zodiacal dust complex in the momentum range sampled by LISA Pathfinder.Peer ReviewedInstitute of Physics (IOP)20192019-09-2020192019-11-15journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/172585https://dx.doi.org/10.3847/1538-4357/ab3649reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1725852026-05-27T15:37:01Z
dc.title.none.fl_str_mv Micrometeoroid events in LISA Pathfinder
title Micrometeoroid events in LISA Pathfinder
spellingShingle Micrometeoroid events in LISA Pathfinder
Thorpe, J. I.
Astrophysics
Solar system
Instrumentation: miscellaneous
Meteorites
Meteors
Meteoroids
Astrofísica
Sistema solar
Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
title_short Micrometeoroid events in LISA Pathfinder
title_full Micrometeoroid events in LISA Pathfinder
title_fullStr Micrometeoroid events in LISA Pathfinder
title_full_unstemmed Micrometeoroid events in LISA Pathfinder
title_sort Micrometeoroid events in LISA Pathfinder
dc.creator.none.fl_str_mv Thorpe, J. I.
Slutsky, J.
Baker, John G.
Ramos Castro, Juan José|||0000-0001-9413-2001
author Thorpe, J. I.
author_facet Thorpe, J. I.
Slutsky, J.
Baker, John G.
Ramos Castro, Juan José|||0000-0001-9413-2001
author_role author
author2 Slutsky, J.
Baker, John G.
Ramos Castro, Juan José|||0000-0001-9413-2001
author2_role author
author
author
dc.subject.none.fl_str_mv Astrophysics
Solar system
Instrumentation: miscellaneous
Meteorites
Meteors
Meteoroids
Astrofísica
Sistema solar
Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
topic Astrophysics
Solar system
Instrumentation: miscellaneous
Meteorites
Meteors
Meteoroids
Astrofísica
Sistema solar
Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
description The zodiacal dust complex, a population of dust and small particles that pervades the solar system, provides important insight into the formation and dynamics of planets, comets, asteroids, and other bodies. We present a new set of data obtained from direct measurements of momentum transfer to a spacecraft from individual particle impacts. This technique is made possible by the extreme precision of the instruments flown on the LISA Pathfinder spacecraft, a technology demonstrator for a future space-based gravitational wave observatory. Pathfinder employed a technique known as drag-free control that achieved rejection of external disturbances, including particle impacts, using a micropropulsion system. Using a simple model of the impacts and knowledge of the control system, we show that it is possible to detect impacts and measure properties such as the transferred momentum, direction of travel, and location of impact on the spacecraft. In this paper, we present the results of a systematic search for impacts during 4348 hr of Pathfinder data. We report a total of 54 candidates with transferred momenta ranging from 0.2 to 230 µNs. We furthermore make a comparison of these candidates with models of micrometeoroid populations in the inner solar system, including those resulting from Jupiter-family comets (JFCs), Oort Cloud comets, Halley-type comets, and asteroids. We find that our measured population is consistent with a population dominated by JFCs, with some evidence for a smaller contribution from Halley-type comets, in agreement with consensus models of the zodiacal dust complex in the momentum range sampled by LISA Pathfinder.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-09-20
2019
2019-11-15
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/172585
https://dx.doi.org/10.3847/1538-4357/ab3649
url https://hdl.handle.net/2117/172585
https://dx.doi.org/10.3847/1538-4357/ab3649
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institute of Physics (IOP)
publisher.none.fl_str_mv Institute of Physics (IOP)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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