XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic disc

[Aims] We aim to characterise the population of low-luminosity X-ray sources in the Galactic plane by studying their X-ray spectra and periodic signals in the light curves.

Detalles Bibliográficos
Autores: Mondal, Samaresh, Ponti, Gabriele, Filor, Luke, Bao, Tong, Haberl, Frank, Salcedo, Ciro, Campana, Sergio, Hailey, Charles J., Mori, Kaya, Rea, Nanda
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/371845
Acceso en línea:http://hdl.handle.net/10261/371845
Access Level:acceso abierto
Palabra clave:Binaries: close
Novae
Cataclysmic variables
White dwarfs
Galaxy: center
Galaxy: disk
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spelling XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic discMondal, SamareshPonti, GabrieleFilor, LukeBao, TongHaberl, FrankSalcedo, CiroCampana, SergioHailey, Charles J.Mori, KayaRea, NandaBinaries: closeNovaeCataclysmic variablesWhite dwarfsGalaxy: centerGalaxy: disk[Aims] We aim to characterise the population of low-luminosity X-ray sources in the Galactic plane by studying their X-ray spectra and periodic signals in the light curves.[Methods] We are performing an X-ray survey of the Galactic disc using XMM-Newton, and the source XMMU J173029.8–330920 was serendipitously discovered in our campaign. We performed a follow-up observation of the source using our pre-approved NuSTAR target of opportunity time. We used various phenomenological models in XSPEC for the X-ray spectral modelling. We also computed the Lomb-Scargle periodogram to search for X-ray periodicity. A Monte Carlo method was used to simulate 1000 artificial light curves in order to estimate the significance of the detected period. We also searched for X-ray, optical, and infrared counterparts of the source in various catalogues.[Results] The spectral modelling indicates the presence of an intervening cloud with NH ∼ (1.5 − 2.3)×1023 cm−2 that partially absorbs the incoming X-ray photons. The X-ray spectra are best fit by a model representing emission from a collisionally ionised diffuse gas with a plasma temperature of kT = 26−5+11 keV. Furthermore, an Fe Kα line at 6.47−0.06+0.13 keV was detected with an equivalent width of the line of 312 ± 104 eV. We discovered a coherent pulsation with a period of 521.7 ± 0.8 s. The 3–10 keV pulsed fraction of the source is around ∼50–60%.[Conclusions] The hard X-ray emission with plasma temperature kT = 26−5+11 keV, iron Kα emission at 6.4 keV, and a periodic behaviour of 521.7 ± 0.8 s suggest XMMU J173029.8–33092 to be an intermediate polar. We estimated the mass of the central white dwarf to be 0.94 − 1.4 M⊙ by assuming a distance to the source of ∼1.4 − 5 kpc.SM and GP acknowledge financial support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program HotMilk (grant agreement No. 865637). SM and GP also acknowledge support from Bando per il Finanziamento della Ricerca Fondamentale 2022 dell’Istituto Nazionale di Astrofisica (INAF): GO Large program and from the Framework per l’Attrazione e il Rafforzamento delle Eccellenze (FARE) per la ricerca in Italia (R20L5S39T9). KM is partially supported by NASA ADAP program (NNH22ZDA001N-ADAP).Peer reviewedEDP SciencesEuropean Research CouncilIstituto Nazionale di AstrofisicaNASAConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/371845reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/865637https://doi.org/10.1051/0004-6361/202449228Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3718452026-05-22T06:33:51Z
dc.title.none.fl_str_mv XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic disc
title XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic disc
spellingShingle XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic disc
Mondal, Samaresh
Binaries: close
Novae
Cataclysmic variables
White dwarfs
Galaxy: center
Galaxy: disk
title_short XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic disc
title_full XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic disc
title_fullStr XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic disc
title_full_unstemmed XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic disc
title_sort XMM-Newton and NuSTAR discovery of a likely IP candidate XMMU J173029.8–330920 in the Galactic disc
dc.creator.none.fl_str_mv Mondal, Samaresh
Ponti, Gabriele
Filor, Luke
Bao, Tong
Haberl, Frank
Salcedo, Ciro
Campana, Sergio
Hailey, Charles J.
Mori, Kaya
Rea, Nanda
author Mondal, Samaresh
author_facet Mondal, Samaresh
Ponti, Gabriele
Filor, Luke
Bao, Tong
Haberl, Frank
Salcedo, Ciro
Campana, Sergio
Hailey, Charles J.
Mori, Kaya
Rea, Nanda
author_role author
author2 Ponti, Gabriele
Filor, Luke
Bao, Tong
Haberl, Frank
Salcedo, Ciro
Campana, Sergio
Hailey, Charles J.
Mori, Kaya
Rea, Nanda
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Research Council
Istituto Nazionale di Astrofisica
NASA
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Binaries: close
Novae
Cataclysmic variables
White dwarfs
Galaxy: center
Galaxy: disk
topic Binaries: close
Novae
Cataclysmic variables
White dwarfs
Galaxy: center
Galaxy: disk
description [Aims] We aim to characterise the population of low-luminosity X-ray sources in the Galactic plane by studying their X-ray spectra and periodic signals in the light curves.
publishDate 2024
dc.date.none.fl_str_mv 2024
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/10261/371845
url http://hdl.handle.net/10261/371845
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/H2020/865637
https://doi.org/10.1051/0004-6361/202449228
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 15,811543

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