Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/27022
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | SIDOLI, Lara | en_US |
dc.contributor.author | Tiengo, A. | en_US |
dc.contributor.author | PAIZIS, ADAMANTIA | en_US |
dc.contributor.author | SGUERA, VITO | en_US |
dc.contributor.author | LOTTI, Simone | en_US |
dc.contributor.author | NATALUCCI, LORENZO | en_US |
dc.date.accessioned | 2020-09-01T09:28:02Z | - |
dc.date.available | 2020-09-01T09:28:02Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27022 | - |
dc.description.abstract | We report the results of an XMM-Newton and NuSTAR coordinated observation of the Supergiant Fast X-ray Transient (SFXT) IGR J11215─5952, performed on 2016 February 14, during the expected peak of its brief outburst, which repeats every ∼165 days. Timing and spectral analysis were performed simultaneously in the energy band 0.4─78 keV. A spin period of 187.0 (±0.4) s was measured, consistent with previous observations performed in 2007. The X-ray intensity shows a large variability (more than one order of magnitude) on timescales longer than the spin period, with several luminous X-ray flares that repeat every 2─2.5 ks, some of which simultaneously observed by both satellites. The broadband (0.4─78 keV) time-averaged spectrum was well deconvolved with a double-component model (a blackbody plus a power law with a high energy cutoff) together with a weak iron line in emission at 6.4 keV (equivalent width, EW, of 40 ± 10 eV). Alternatively, a partial covering model also resulted in an adequate description of the data. The source time-averaged X-ray luminosity was 10<SUP>36</SUP> erg s<SUP>−1</SUP> (0.1─100 keV; assuming 7 kpc). We discuss the results of these observations in the framework of the different models proposed to explain SFXTs, supporting a quasi-spherical settling accretion regime, although alternative possibilities (e.g., centrifugal barrier) cannot be ruled out. | en_US |
dc.language.iso | eng | en_US |
dc.title | XMM-Newton and NuSTAR Simultaneous X-Ray Observations of IGR J11215-5952 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/aa671a | en_US |
dc.identifier.scopus | 2-s2.0-85017308612 | en_US |
dc.identifier.isi | 000398296700009 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/aa671a | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 838 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 133 | en_US |
dc.relation.lastpage | 145 | en_US |
dc.relation.numberofpages | 13 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 6 | 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 | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017ApJ...838..133S | 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.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | IAPS Roma | - |
crisitem.author.dept | IAPS Roma | - |
crisitem.author.orcid | 0000-0001-9705-2883 | - |
crisitem.author.orcid | 0000-0001-5067-0377 | - |
crisitem.author.orcid | 0000-0001-8202-9381 | - |
crisitem.author.orcid | 0000-0002-3088-1561 | - |
crisitem.author.orcid | 0000-0002-6601-9543 | - |
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