Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/32092
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Erwan Quintin | en_US |
dc.contributor.author | Natalie Webb | en_US |
dc.contributor.author | Andrés Gúrpide | en_US |
dc.contributor.author | BACHETTI, Matteo | en_US |
dc.contributor.author | Felix Fürst | en_US |
dc.date.accessioned | 2022-05-09T14:34:57Z | - |
dc.date.available | 2022-05-09T14:34:57Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32092 | - |
dc.description.abstract | We report here the discovery of NGC 7793 ULX-4, a new transient ultraluminous X-ray source (ULX) in NGC 7793, a spiral galaxy already well known for harbouring several ULXs. This new source underwent an outburst in 2012, when it was detected by \textit{XMM-Newton} and the \textit{Swift} X-ray telescope. The outburst reached a peak luminosity of 3.4$\times 10^{39}$ erg\ s$^{-1}$ and lasted for about 8 months, after which the source went below a luminosity of $10^{37}$ erg\ s$^{-1}$; previous \textit{Chandra} observations constrain the low-state luminosity below $\sim$ 2$\times 10^{36}$ erg\ s$^{-1}$, implying a variability of at least a factor 1000. We propose four possible optical counterparts, found in archival HST observations of the galaxy. A pulsation in the \textit{XMM-Newton} signal was found at 2.52 Hz, with a significance of $\sim3.4\,\sigma$, and an associated spin-up of $\dot{f} = 3.5\times10^{-8}$ Hz.s$^{-1}$. NGC 7793 is therefore the first galaxy to host more than one pulsating ULX. | en_US |
dc.language.iso | eng | en_US |
dc.title | A new candidate pulsating ULX in NGC 7793 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stab814 | en_US |
dc.identifier.scopus | 2-s2.0-85116421787 | en_US |
dc.identifier.url | http://arxiv.org/abs/2103.11650v1 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article-abstract/503/4/5485/6179878?redirectedFrom=fulltext&login=false | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 503 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 5485 | en_US |
dc.relation.lastpage | 5494 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | FRA | en_US |
dc.contributor.country | ESP | 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.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.orcid | 0000-0002-4576-9337 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
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