Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/33970
DC Field | Value | Language |
---|---|---|
dc.contributor.author | ILLIANO, GIULIA | en_US |
dc.contributor.author | PAPITTO, ALESSANDRO | en_US |
dc.contributor.author | SANNA, ANDREA | en_US |
dc.contributor.author | Bult, Peter | en_US |
dc.contributor.author | AMBROSINO, Filippo | en_US |
dc.contributor.author | MIRAVAL ZANON, ARIANNA | en_US |
dc.contributor.author | Coti Zelati, Francesco | en_US |
dc.contributor.author | STELLA, Luigi | en_US |
dc.contributor.author | Altamirano, Diego | en_US |
dc.contributor.author | Baglio, Maria Cristina | en_US |
dc.contributor.author | BOZZO , ENRICO | en_US |
dc.contributor.author | BURDERI, LUCIANO | en_US |
dc.contributor.author | DE MARTINO, Domitilla | en_US |
dc.contributor.author | DI MARCO, ALESSANDRO | en_US |
dc.contributor.author | Di Salvo, Tiziana | en_US |
dc.contributor.author | Ferrigno, Carlo | en_US |
dc.contributor.author | Loktev, Vladislav | en_US |
dc.contributor.author | MARINO, ALESSIO | en_US |
dc.contributor.author | Ng, Mason | en_US |
dc.contributor.author | PILIA, Maura | en_US |
dc.contributor.author | Poutanen, Juri | en_US |
dc.contributor.author | Salmi, Tuomo | en_US |
dc.date.accessioned | 2023-03-03T10:46:26Z | - |
dc.date.available | 2023-03-03T10:46:26Z | - |
dc.date.issued | 2023 | en_US |
dc.identifier.issn | 2041-8205 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/33970 | - |
dc.description.abstract | We present a pulse timing analysis of NICER observations of the accreting millisecond X-ray pulsar SAX J1808.4−3658 during the outburst that started on 2022 August 19. Similar to previous outbursts, after decaying from a peak luminosity of ≃1 × 1036 erg s−1 in about a week, the pulsar entered a ∼1 month long reflaring stage. Comparison of the average pulsar spin frequency during the outburst with those previously measured confirmed the long-term spin derivative of ${\dot{\nu }}_{\mathrm{SD}}=-(1.15\,\pm \,0.06)\times \,{10}^{-15}$ Hz s−1, compatible with the spin-down torque of a ≈1026 G cm3 rotating magnetic dipole. For the first time in the last twenty years, the orbital phase evolution shows evidence for a decrease of the orbital period. The long-term behavior of the orbit is dominated by an ∼11 s modulation of the orbital phase epoch consistent with a ∼21 yr period. We discuss the observed evolution in terms of a coupling between the orbit and variations in the mass quadrupole of the companion star. | en_US |
dc.language.iso | eng | en_US |
dc.title | Timing Analysis of the 2022 Outburst of SAX J1808.4-3658: Hints of Orbital Decay | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/2041-8213/acad81 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/2041-8213/acad81/pdf | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 942 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | L40 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL LETTERS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2023ApJ...942L..40I | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | IASF Palermo | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.orcid | 0000-0003-4795-7072 | - |
crisitem.author.orcid | 0000-0001-6289-7413 | - |
crisitem.author.orcid | 0000-0001-7915-996X | - |
crisitem.author.orcid | 0000-0002-0018-1687 | - |
crisitem.author.orcid | 0000-0001-5458-891X | - |
crisitem.author.orcid | 0000-0002-5069-4202 | - |
crisitem.author.orcid | 0000-0001-7397-8091 | - |
crisitem.journal.journalissn | 2041-8205 | - |
crisitem.journal.ance | E196528 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2023_ApJL_942_L40.pdf | Pdf editoriale | 768.89 kB | Adobe PDF | View/Open |
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