Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/29209
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Coti Zelati, Francesco | en_US |
dc.contributor.author | PAPITTO, ALESSANDRO | en_US |
dc.contributor.author | DE MARTINO, Domitilla | en_US |
dc.contributor.author | Buckley, David A. H. | en_US |
dc.contributor.author | Odendaal, Alida | en_US |
dc.contributor.author | Li, Jian | en_US |
dc.contributor.author | Russell, Thomas D. | en_US |
dc.contributor.author | Torres, Diego F. | en_US |
dc.contributor.author | Mazzola, Simona M. | en_US |
dc.contributor.author | Bozzo, Enrico | en_US |
dc.contributor.author | Gromadzki, Mariusz | en_US |
dc.contributor.author | CAMPANA, Sergio | en_US |
dc.contributor.author | Rea, Nanda | en_US |
dc.contributor.author | Ferrigno, Carlo | en_US |
dc.contributor.author | Migliari, Simone | en_US |
dc.date.accessioned | 2020-12-28T12:22:19Z | - |
dc.date.available | 2020-12-28T12:22:19Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29209 | - |
dc.description.abstract | We report on a multi-wavelength study of the unclassified X-ray source CXOU J110926.4-650224 (J1109). We identified the optical counterpart as a blue star with a magnitude of ∼20.1 (3300-10500 Å). The optical emission was variable on timescales from hundreds to thousands of seconds. The spectrum showed prominent emission lines with variable profiles at different epochs. Simultaneous XMM-Newton and NuSTAR observations revealed a bimodal distribution of the X-ray count rates on timescales as short as tens of seconds, as well as sporadic flaring activity. The average broad-band (0.3-79 keV) spectrum was adequately described by an absorbed power law model with photon index of Γ = 1.63 ± 0.01 (at 1σ c.l.), and the X-ray luminosity was (2.16 ± 0.04) × 10<SUP>34</SUP> erg s<SUP>-1</SUP> for a distance of 4 kpc. Based on observations with different instruments, the X-ray luminosity has remained relatively steady over the past ∼15 years. J1109 is spatially associated with the gamma-ray source FL8Y J1109.8-6500, which was detected with Fermi at an average luminosity of (1.5 ± 0.2) × 10<SUP>34</SUP> erg s<SUP>-1</SUP> (assuming the distance of J1109) over the 0.1-300 GeV energy band between 2008 and 2016. The source was undetected during ATCA radio observations that were simultaneous with NuSTAR, down to a 3σ flux upper limit of 18 μJy beam<SUP>-1</SUP> (at 7.25 GHz). We show that the phenomenological properties of J1109 point to a binary transitional pulsar candidate currently in a sub-luminous accretion disk state, and that the upper limits derived for the radio emission are consistent with the expected radio luminosity for accreting neutron stars at similar X-ray luminosities. | en_US |
dc.language.iso | eng | en_US |
dc.title | Prolonged sub-luminous state of the new transitional pulsar candidate CXOU J110926.4-650224 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201834835 | en_US |
dc.identifier.scopus | 2-s2.0-85062194120 | en_US |
dc.identifier.isi | 000459240000002 | en_US |
dc.identifier.url | http://arxiv.org/abs/1903.04526v1 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2019/02/aa34835-18/aa34835-18.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 622 | en_US |
dc.relation.firstpage | A211 | en_US |
dc.relation.numberofpages | 21 | en_US |
dc.relation.article | A211 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 15 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | DEU | en_US |
dc.contributor.country | ESP | 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...622A.211C | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering | 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. Roma | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.orcid | 0000-0001-6289-7413 | - |
crisitem.author.orcid | 0000-0002-5069-4202 | - |
crisitem.author.orcid | 0000-0001-6278-1576 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
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