Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26639
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Fornasini, Francesca M. | en_US |
dc.contributor.author | Tomsick, John A. | en_US |
dc.contributor.author | BACHETTI, Matteo | en_US |
dc.contributor.author | Krivonos, Roman A. | en_US |
dc.contributor.author | Fürst, Felix | en_US |
dc.contributor.author | NATALUCCI, LORENZO | en_US |
dc.contributor.author | Pottschmidt, Katja | en_US |
dc.contributor.author | Wilms, Jörn | en_US |
dc.date.accessioned | 2020-07-27T09:13:09Z | - |
dc.date.available | 2020-07-27T09:13:09Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26639 | - |
dc.description.abstract | IGR J18214-1318, a Galactic source discovered by the International Gamma-Ray Astrophysics Laboratory, is a high-mass X-ray binary (HMXB) with a supergiant O-type stellar donor. We report on the XMM-Newton and NuSTAR observations that were undertaken to determine the nature of the compact object in this system. This source exhibits high levels of aperiodic variability, but no periodic pulsations are detected with a 90% confidence upper limit of 2% fractional rms between 0.00003-88 Hz, a frequency range that includes the typical pulse periods of neutron stars (NSs) in HMXBs (0.1-10<SUP>3</SUP> s). Although the lack of pulsations prevents us from definitively identifying the compact object in IGR J18214-1318, the presence of an exponential cutoff with e-folding energy ≲ 30 {keV} in its 0.3-79 keV spectrum strongly suggests that the compact object is an NS. The X-ray spectrum also shows a Fe Kα emission line and a soft excess, which can be accounted for by either a partial-covering absorber with {N}<SUB>{{H</SUB>}}≈ {10}<SUP>23</SUP> cm<SUP>-2</SUP>, which could be due to the inhomogeneous supergiant wind, or a blackbody component with {kT}={1.74}<SUB>-0.05</SUB><SUP>+0.04</SUP> keV and {R}<SUB>{BB</SUB>}≈ 0.3 km, which may originate from NS hot spots. Although neither explanation for the soft excess can be excluded, the former is more consistent with the properties observed in other supergiant HMXBs. We compare IGR J18214-1318 to other HMXBs that lack pulsations or have long pulsation periods beyond the range covered by our observations. | en_US |
dc.language.iso | eng | en_US |
dc.title | An XMM-Newton and NuSTAR Study of IGR J18214-1318: A Non-pulsating High-mass X-Ray Binary with a Neutron Star | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/aa6ff4 | en_US |
dc.identifier.scopus | 2-s2.0-85019979640 | en_US |
dc.identifier.isi | 000402310500021 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/aa6ff4 | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.relation.volume | 841 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 35 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | 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...841...35F | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_10 High energy and particle astronomy – X-rays, cosmic rays, gamma rays, neutrinos | 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. Cagliari | - |
crisitem.author.dept | IAPS Roma | - |
crisitem.author.orcid | 0000-0002-4576-9337 | - |
crisitem.author.orcid | 0000-0002-6601-9543 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fornasini_2017_ApJ_841_35.pdf | Pdf editoriale | 1.52 MB | Adobe PDF | View/Open |
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