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Article: The semicentennial binary system PSR J2032+4127 at periastron: X-ray photometry, optical spectroscopy and SPH modelling

TitleThe semicentennial binary system PSR J2032+4127 at periastron: X-ray photometry, optical spectroscopy and SPH modelling
Authors
KeywordsX-rays: binaries
Issue Date2019
PublisherOxford University press, co-published with Royal Astronomical Society. The Journal's web site is located at http://www.oxfordjournals.org/our_journals/mnras/
Citation
Monthly Notices of the Royal Astronomical Society, 2019, v. 485 n. 2, p. 1864-1875 How to Cite?
AbstractX-ray photometry and optical spectra are presented covering the periastron passage of the highly eccentric, ∼50 yr binary system PSR J2032+4127 in 2017 November. This system consists of a 143 ms pulsar in orbit around a massive OB star, MT 91-213. The data show dramatic changes during the encounter as the pulsar wind collided with the stellar wind. The X-ray flux rose on the approach to periastron, then underwent a major dip in the few days around periastron, and then gradually declined over the next few weeks. The optical spectroscopy revealed a steady decline in the H α line strength on the approach to periastron (from an equivalent width of −15 to −7 Å) implying a truncation of the OB star’s circumstellar disc by the approaching neutron star. Smooth particle hydrodynamic modelling is used here to model the system within the context of the observed behaviour and predict the geometrical configuration of the circumstellar disc with respect to the pulsar’s orbit. © 2019 The Author(s).
Persistent Identifierhttp://hdl.handle.net/10722/273998
ISSN
2019 Impact Factor: 5.356
2015 SCImago Journal Rankings: 2.806
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCoe, MJ-
dc.contributor.authorOkazaki, AT-
dc.contributor.authorSteele, IA-
dc.contributor.authorNg, SCY-
dc.contributor.authorHo, WCG-
dc.contributor.authorLyne, AG-
dc.contributor.authorStappers, B-
dc.contributor.authorJohnson, TJ-
dc.contributor.authorRay, PS-
dc.contributor.authorKerr, M-
dc.date.accessioned2019-08-18T14:53:00Z-
dc.date.available2019-08-18T14:53:00Z-
dc.date.issued2019-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2019, v. 485 n. 2, p. 1864-1875-
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/10722/273998-
dc.description.abstractX-ray photometry and optical spectra are presented covering the periastron passage of the highly eccentric, ∼50 yr binary system PSR J2032+4127 in 2017 November. This system consists of a 143 ms pulsar in orbit around a massive OB star, MT 91-213. The data show dramatic changes during the encounter as the pulsar wind collided with the stellar wind. The X-ray flux rose on the approach to periastron, then underwent a major dip in the few days around periastron, and then gradually declined over the next few weeks. The optical spectroscopy revealed a steady decline in the H α line strength on the approach to periastron (from an equivalent width of −15 to −7 Å) implying a truncation of the OB star’s circumstellar disc by the approaching neutron star. Smooth particle hydrodynamic modelling is used here to model the system within the context of the observed behaviour and predict the geometrical configuration of the circumstellar disc with respect to the pulsar’s orbit. © 2019 The Author(s).-
dc.languageeng-
dc.publisherOxford University press, co-published with Royal Astronomical Society. The Journal's web site is located at http://www.oxfordjournals.org/our_journals/mnras/-
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society-
dc.rightsMonthly Notices of the Royal Astronomical Society. Copyright © Oxford University press, co-published with Royal Astronomical Society.-
dc.rightsThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. ©: 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.-
dc.subjectX-rays: binaries-
dc.titleThe semicentennial binary system PSR J2032+4127 at periastron: X-ray photometry, optical spectroscopy and SPH modelling-
dc.typeArticle-
dc.identifier.emailNg, SCY: ncy@astro.physics.hku.hk-
dc.identifier.authorityNg, SCY=rp01706-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1093/mnras/stz515-
dc.identifier.scopuseid_2-s2.0-85062891808-
dc.identifier.hkuros301353-
dc.identifier.volume485-
dc.identifier.issue2-
dc.identifier.spage1864-
dc.identifier.epage1875-
dc.identifier.isiWOS:000474886200025-
dc.publisher.placeUnited Kingdom-

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