Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/25192
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Pintore, Fabio | en_US |
dc.contributor.author | MEREGHETTI, Sandro | en_US |
dc.date.accessioned | 2020-05-26T15:07:13Z | - |
dc.date.available | 2020-05-26T15:07:13Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/25192 | - |
dc.description.abstract | AX J1845-0258 is a transient X-ray pulsar, with spin period of 6.97 s, discovered with the ASCA satellite in 1993. Its soft spectrum and the possible association with a supernova remnant suggest that AX J1845-0258 might be a magnetar, but this has not been confirmed yet. A possible counterpart one order of magnitude fainter, AX J184453-025640, has been found in later X-ray observations, but no pulsations have been detected. In addition, some other X-ray sources are compatible with the pulsar location, which is in a crowded region of the Galactic plane. We have carried out a new investigation of all the X-ray sources in the ASCA error region of AX J1845-0258, using archival data obtained with Chandra in 2007 and 2010, and with XMM-Newton in 2010. We set an upper limit of 6 per cent on the pulsed fraction of AX J184453-025640 and confirmed its rather hard spectrum (power-law photon index of 1.2 ± 0.3). In addition to the other two fainter sources already reported in the literature, we found other X-ray sources positionally consistent with AX J1845-0258. Although many of them are possibly foreground stars likely unrelated to the pulsar, at least another new source, CXOU J184457.5-025823, could be a plausible counterpart of AX J1845-0258. It has a flux of 6 × 10<SUP>-14</SUP> erg cm<SUP>-2</SUP> s<SUP>-1</SUP> and a spectrum well fitted by a power law with photon index ∼1.3 and N<SUB>H</SUB> ∼ 10<SUP>22</SUP> cm<SUP>-2</SUP>. | en_US |
dc.language.iso | eng | en_US |
dc.title | A new investigation of the possible X-ray counterparts of the magnetar candidate AX J1845-0258 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stw1036 | en_US |
dc.identifier.scopus | 2-s2.0-84978976741 | en_US |
dc.identifier.isi | 000379835200068 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/460/1/1033/2608836 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 460 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 1033 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 2 | 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.460.1033P | 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 Palermo | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.orcid | 0000-0002-3869-2925 | - |
crisitem.author.orcid | 0000-0003-3259-7801 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
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