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http://hdl.handle.net/20.500.12386/30679
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | RIGOSELLI, MICHELA | en_US |
dc.contributor.author | MEREGHETTI, Sandro | en_US |
dc.contributor.author | Valery Suleimanov | en_US |
dc.contributor.author | Alexander Y. Potekhin | en_US |
dc.contributor.author | Roberto Turolla | en_US |
dc.contributor.author | Roberto Taverna | en_US |
dc.contributor.author | Fabio Pintore | en_US |
dc.date.accessioned | 2021-03-01T16:12:35Z | - |
dc.date.available | 2021-03-01T16:12:35Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/30679 | - |
dc.description.abstract | We present the results of an XMM-Newton observation of the slowly rotating ($P = 3.4$ s), highly magnetized ($B \approx 3 \times 10^{13}$ G) radio pulsar PSR J0726-2612. A previous X-ray observation with the Chandra satellite showed that some of the properties of PSR J0726-2612 are similar to those of the X-ray Dim Isolated Neutron Stars (XDINSs), a small class of nearby slow pulsars characterized by purely thermal X-ray spectra and undetected in the radio band. We confirm the thermal nature of the X-ray emission of PSR J0726-2612, which can be fit by the sum of two blackbodies with temperatures $kT_1 = 0.074_{-0.011}^{+0.006}$ keV and $kT_2 = 0.14_{-0.02}^{+0.04}$ keV and emitting radii $R_1 = 10.4_{-2.8}^{+10.8}$ km and $R_2 = 0.5_{-0.3}^{+0.9}$ km, respectively (assuming a distance of 1 kpc). A broad absorption line modeled with a Gaussian profile centred at $0.39_{-0.03}^{+0.02}$ keV is required in the fit. The pulse profile of PSR J0726-2612 is characterized by two peaks with similar intensity separated by two unequal minima, a shape and pulsed fraction that cannot be reproduced without invoking magnetic beaming of the X-ray emission. The presence of a single radio pulse suggests that in PSR J0726-2612 the angles that the dipole axis and the line of sight make with the rotation axis, $\xi$ and $\chi$ respectively, are similar. This geometry differs from that of the two radio-silent XDINSs with a double peaked pulse profile similar to that of PSR J0726-2612, for which $\xi \sim 90^\circ$ and $\chi \sim 45^\circ$ have been recently estimated. These results strengthen the similarity between PSR J0726-2612 and the XDINSs and support the possibility that the lack of radio emission from the latter might simply be due to an unfavourable viewing geometry. | en_US |
dc.language.iso | eng | en_US |
dc.title | XMM-Newton observations of PSR J0726-2612, a radio-loud XDINS | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201935485 | en_US |
dc.identifier.scopus | 2-s2.0-85090081910 | en_US |
dc.identifier.isi | 000473409800001 | en_US |
dc.identifier.url | http://arxiv.org/abs/1906.01372v1 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2019/07/aa35485-19/aa35485-19.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 627 | en_US |
dc.relation.firstpage | A69 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | GBR | en_US |
dc.contributor.country | DEU | en_US |
dc.contributor.country | RUS | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019A&A...627A..69R | 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 Milano | - |
crisitem.author.orcid | 0000-0001-6641-5450 | - |
crisitem.author.orcid | 0000-0003-3259-7801 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
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