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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/33969
DC FieldValueLanguage
dc.contributor.authorIlliano, G.en_US
dc.contributor.authorPAPITTO, ALESSANDROen_US
dc.contributor.authorAMBROSINO, Filippoen_US
dc.contributor.authorMiraval Zanon, A.en_US
dc.contributor.authorCoti Zelati, F.en_US
dc.contributor.authorSTELLA, Luigien_US
dc.contributor.authorZAMPIERI, Lucaen_US
dc.contributor.authorBurtovoi, A.en_US
dc.contributor.authorCAMPANA, Sergioen_US
dc.contributor.authorCASELLA, Piergiorgioen_US
dc.contributor.authorCecconi, M.en_US
dc.contributor.authorDE MARTINO, Domitillaen_US
dc.contributor.authorFiori, M.en_US
dc.contributor.authorGhedina, A.en_US
dc.contributor.authorGonzales, M.en_US
dc.contributor.authorHernandez Diaz, M.en_US
dc.contributor.authorISRAEL, Gian Lucaen_US
dc.contributor.authorLEONE, Francescoen_US
dc.contributor.authorNaletto, G.en_US
dc.contributor.authorPerez Ventura, H.en_US
dc.contributor.authorRiverol, C.en_US
dc.contributor.authorRiverol, L.en_US
dc.contributor.authorTorres, D. F.en_US
dc.contributor.authorTurchetta, M.en_US
dc.date.accessioned2023-03-03T10:41:43Z-
dc.date.available2023-03-03T10:41:43Z-
dc.date.issued2023en_US
dc.identifier.issn0004-6361en_US
dc.identifier.urihttp://hdl.handle.net/20.500.12386/33969-
dc.description.abstractContext. PSR J1023+0038 is the first millisecond pulsar that was ever observed as an optical and UV pulsar. So far, it is the only optical transitional millisecond pulsar. The rotation- and accretion-powered emission mechanisms hardly individually explain the observed characteristics of optical pulsations. A synergistic model, combining these standard emission processes, was proposed to explain the origin of the X-ray/UV/optical pulsations. <BR /> Aims: We study the phase lag between the pulses in the optical and X-ray bands to gain insight into the physical mechanisms that cause it. <BR /> Methods: We performed a detailed timing analysis of simultaneous or quasi-simultaneous observations in the X-ray band, acquired with the XMM-Newton and NICER satellites, and in the optical band, with the fast photometers SiFAP2 (mounted at the 3.6 m Telescopio Nazionale Galileo) and Aqueye+ (mounted at the 1.8 m Copernicus Telescope). We estimated the time lag of the optical pulsation with respect to that in the X-rays by modeling the folded pulse profiles with two harmonic components. <BR /> Results: Optical pulses lag the X-ray pulses by ∼150 μs in observations acquired with instruments (NICER and Aqueye+) whose absolute timing uncertainty is much smaller than the measured lag. We also show that the phase lag between optical and X-ray pulsations lies in a limited range of values, δϕ ∈ (0 − 0.15), which is maintained over timescales of about five years. This indicates that both pulsations originate from the same region, and it supports the hypothesis of a common emission mechanism. Our results are interpreted in the shock-driven mini pulsar nebula scenario. This scenario suggests that optical and X-ray pulses are produced by synchrotron emission from the shock that formed within a few light cylinder radii away (∼100 km) from the pulsar, where its striped wind encounters the accretion disk inflow.en_US
dc.language.isoengen_US
dc.titleInvestigating the origin of optical and X-ray pulsations of the transitional millisecond pulsar PSR J1023+0038en_US
dc.typeArticle-
dc.identifier.doi10.1051/0004-6361/202244637en_US
dc.identifier.scopus2-s2.0-85145772307en_US
dc.identifier.urlhttp://arxiv.org/abs/2211.12975v1en_US
dc.identifier.urlhttps://www.aanda.org/articles/aa/pdf/2023/01/aa44637-22.pdfen_US
dc.relation.mediumSTAMPAen_US
dc.relation.volume669en_US
dc.relation.firstpageA26en_US
dc.type.refereeREF_1en_US
dc.description.internationalsìen_US
dc.contributor.countryITAen_US
dc.relation.scientificsectorFIS/05 - ASTRONOMIA E ASTROFISICAen_US
dc.relation.journalASTRONOMY & ASTROPHYSICSen_US
dc.type.miur262 Articolo in rivista-
dc.identifier.adsbibcode2023A&A...669A..26Ien_US
dc.relation.ercsectorERC sectors::Physical Sciences and Engineeringen_US
dc.description.apcnoen_US
dc.description.oa1 – prodotto con file in versione Open Access (allegare il file al passo  5-Carica)en_US
item.openairetypeArticle-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.grantfulltextopen-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
crisitem.author.deptO.A. Roma-
crisitem.author.deptO.A. Roma-
crisitem.author.deptO.A. Roma-
crisitem.author.deptO.A. Padova-
crisitem.author.deptO.A. Brera-
crisitem.author.deptO.A. Roma-
crisitem.author.deptO.A. Capodimonte-
crisitem.author.deptO.A. Roma-
crisitem.author.deptO.A. Catania-
crisitem.author.orcid0000-0001-6289-7413-
crisitem.author.orcid0000-0001-7915-996X-
crisitem.author.orcid0000-0002-0018-1687-
crisitem.author.orcid0000-0002-6516-1329-
crisitem.author.orcid0000-0001-6278-1576-
crisitem.author.orcid0000-0002-0752-3301-
crisitem.author.orcid0000-0002-5069-4202-
crisitem.author.orcid0000-0001-5480-6438-
crisitem.author.orcid0000-0001-7626-3788-
crisitem.journal.journalissn0004-6361-
crisitem.journal.anceE016240-
Appears in Collections:1.01 Articoli in rivista
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