Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/25190
DC Field | Value | Language |
---|---|---|
dc.contributor.author | MEREGHETTI, Sandro | en_US |
dc.contributor.author | Pintore, Fabio | en_US |
dc.contributor.author | ESPOSITO, PAOLO | en_US |
dc.contributor.author | LA PALOMBARA, NICOLA | en_US |
dc.contributor.author | TIENGO, ANDREA | en_US |
dc.contributor.author | ISRAEL, Gian Luca | en_US |
dc.contributor.author | STELLA, Luigi | en_US |
dc.date.accessioned | 2020-05-26T14:58:30Z | - |
dc.date.available | 2020-05-26T14:58:30Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/25190 | - |
dc.description.abstract | The hot subdwarf HD 49798 has an X-ray emitting compact companion with a spin-period of 13.2 s and a dynamically measured mass of 1.28 ± 0.05 M<SUB>☉</SUB>, consistent with either a neutron star or a white dwarf. Using all the available XMM-Newton and Swift observations of this source, we could perform a phase-connected timing analysis extending back to the ROSAT data obtained in 1992. We found that the pulsar is spinning up at a rate of (2.15 ± 0.05) × 10<SUP>-15</SUP> s s<SUP>-1</SUP>. This result is best interpreted in terms of a neutron star accreting from the wind of its subdwarf companion, although the remarkably steady period derivative over more than 20 yr is unusual in wind-accreting neutron stars. The possibility that the compact object is a massive white dwarf accreting through a disc cannot be excluded, but it requires a larger distance and/or properties of the stellar wind of HD 49798 different from those derived from the modelling of its optical/UV spectra. | en_US |
dc.language.iso | eng | en_US |
dc.title | Discovery of spin-up in the X-ray pulsar companion of the hot subdwarf HD 49798 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stw536 | en_US |
dc.identifier.scopus | 2-s2.0-84965031061 | en_US |
dc.identifier.isi | 000375799500011 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/458/4/3523/2613825 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 458 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 3523 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 7 | en_US |
dc.description.international | no | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016MNRAS.458.3523M | 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 | IASF Milano | - |
crisitem.author.dept | IASF Palermo | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.orcid | 0000-0003-3259-7801 | - |
crisitem.author.orcid | 0000-0002-3869-2925 | - |
crisitem.author.orcid | 0000-0001-7015-6359 | - |
crisitem.author.orcid | 0000-0001-5480-6438 | - |
crisitem.author.orcid | 0000-0002-0018-1687 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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stw536.pdf | Pdf editoriale | 366.91 kB | Adobe PDF | View/Open |
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