Observing the onset of the accretion wake in Vela X-1

High-mass X-ray binaries (HMXBs) offer a unique opportunity to investigate accretion onto compact objects and the wind structure in massive stars. A key source for such studies is the bright neutron star HMXB Vela X-1 whose convenient physical and orbital parameters facilitate analyses and in partic...

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Autores: Diez, Camille, Grinberg, Victoria, Fürst, Felix, El Mellah, Ileyk, Zhou, Menglei, Santangelo, Andrea, Martínez-Núñez, Silvia, Amato, Roberta, Hell, Natalie, Kretschmar, Peter
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/350423
Acceso en línea:http://hdl.handle.net/10261/350423
Access Level:acceso abierto
Palabra clave:X-rays: binaries
Stars: neutron
Stars: winds, outflows
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spelling Observing the onset of the accretion wake in Vela X-1Diez, CamilleGrinberg, VictoriaFürst, FelixEl Mellah, IleykZhou, MengleiSantangelo, AndreaMartínez-Núñez, SilviaAmato, RobertaHell, NatalieKretschmar, PeterX-rays: binariesStars: neutronStars: winds, outflowsHigh-mass X-ray binaries (HMXBs) offer a unique opportunity to investigate accretion onto compact objects and the wind structure in massive stars. A key source for such studies is the bright neutron star HMXB Vela X-1 whose convenient physical and orbital parameters facilitate analyses and in particular enable studies of the wind structure in HMXBs. Here, we analyse simultaneous XMM-Newton and NuSTAR observations at ϕorb ≈ 0.36–0.52 and perform time-resolved spectral analysis down to the pulse period of the neutron star based on our previous NuSTAR-only results. For the first time, we are able to trace the onset of the wakes in a broad 0.5–78 keV range with a high-time resolution of ~283 s and compare our results with theoretical predictions. We observe a clear rise in the absorption column density of the stellar wind NH,1 starting at orbital phase ~0.44, corresponding to the wake structure entering our line of sight towards the neutron star, together with local extrema throughout the observation, which are possibly associated with clumps or other structures in the wind. Periods of high absorption reveal the presence of multiple fluorescent emission lines of highly ionised species, mainly in the soft-X-ray band between 0.5 and 4 keV, indicating photoionisation of the wind.This work has been partially funded by the Bundesministerium für Wirtschaft und Energie under the Deutsches Zentrum für Luft- und Raumfahrt Grants 50 OR 1915. The research leading to these results has received funding from the European Union’s Horizon 2020 Programme under the AHEAD2020 project (grant agreement no. 871158) and from the ESA Archival Research Visitor Programme. SMN acknowledges funding under project PID2021-122955OB-C41 funded by MCIN/AEI/10.13039/501100011033 and by ‘ERDF A way of making Europe’. RA acknowledges support by the CNES. Work at LLNL was performed under the auspices of the US Department of Energy under contract no. DE-AC52-07NA27344 and supported through NASA grants to LLNL.Peer reviewedEDP SciencesMinisterio de Ciencia, Innovación y Universidades (España)Ministerio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)Federal Ministry for Economics Affairs and Energy (Germany)Deutsches Stiftungs ZentrumEuropean CommissionEuropean Research CouncilEuropean Space AgencyCentre National D'Etudes Spatiales (France)NASADepartment of Energy (US)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/350423reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/871158info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122955OB-C41https://doi.org/10.1051/0004-6361/202245708Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3504232026-05-22T06:33:51Z
dc.title.none.fl_str_mv Observing the onset of the accretion wake in Vela X-1
title Observing the onset of the accretion wake in Vela X-1
spellingShingle Observing the onset of the accretion wake in Vela X-1
Diez, Camille
X-rays: binaries
Stars: neutron
Stars: winds, outflows
title_short Observing the onset of the accretion wake in Vela X-1
title_full Observing the onset of the accretion wake in Vela X-1
title_fullStr Observing the onset of the accretion wake in Vela X-1
title_full_unstemmed Observing the onset of the accretion wake in Vela X-1
title_sort Observing the onset of the accretion wake in Vela X-1
dc.creator.none.fl_str_mv Diez, Camille
Grinberg, Victoria
Fürst, Felix
El Mellah, Ileyk
Zhou, Menglei
Santangelo, Andrea
Martínez-Núñez, Silvia
Amato, Roberta
Hell, Natalie
Kretschmar, Peter
author Diez, Camille
author_facet Diez, Camille
Grinberg, Victoria
Fürst, Felix
El Mellah, Ileyk
Zhou, Menglei
Santangelo, Andrea
Martínez-Núñez, Silvia
Amato, Roberta
Hell, Natalie
Kretschmar, Peter
author_role author
author2 Grinberg, Victoria
Fürst, Felix
El Mellah, Ileyk
Zhou, Menglei
Santangelo, Andrea
Martínez-Núñez, Silvia
Amato, Roberta
Hell, Natalie
Kretschmar, Peter
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
Federal Ministry for Economics Affairs and Energy (Germany)
Deutsches Stiftungs Zentrum
European Commission
European Research Council
European Space Agency
Centre National D'Etudes Spatiales (France)
NASA
Department of Energy (US)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv X-rays: binaries
Stars: neutron
Stars: winds, outflows
topic X-rays: binaries
Stars: neutron
Stars: winds, outflows
description High-mass X-ray binaries (HMXBs) offer a unique opportunity to investigate accretion onto compact objects and the wind structure in massive stars. A key source for such studies is the bright neutron star HMXB Vela X-1 whose convenient physical and orbital parameters facilitate analyses and in particular enable studies of the wind structure in HMXBs. Here, we analyse simultaneous XMM-Newton and NuSTAR observations at ϕorb ≈ 0.36–0.52 and perform time-resolved spectral analysis down to the pulse period of the neutron star based on our previous NuSTAR-only results. For the first time, we are able to trace the onset of the wakes in a broad 0.5–78 keV range with a high-time resolution of ~283 s and compare our results with theoretical predictions. We observe a clear rise in the absorption column density of the stellar wind NH,1 starting at orbital phase ~0.44, corresponding to the wake structure entering our line of sight towards the neutron star, together with local extrema throughout the observation, which are possibly associated with clumps or other structures in the wind. Periods of high absorption reveal the presence of multiple fluorescent emission lines of highly ionised species, mainly in the soft-X-ray band between 0.5 and 4 keV, indicating photoionisation of the wind.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/350423
url http://hdl.handle.net/10261/350423
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/H2020/871158
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122955OB-C41
https://doi.org/10.1051/0004-6361/202245708
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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