Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/29138
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Kajava, J. J. E. | en_US |
dc.contributor.author | MOTTA, Sara Elisa | en_US |
dc.contributor.author | Sanna, A. | en_US |
dc.contributor.author | Veledina, A. | en_US |
dc.contributor.author | Del Santo, M. | en_US |
dc.contributor.author | SEGRETO, ALBERTO | en_US |
dc.date.accessioned | 2020-12-23T10:03:58Z | - |
dc.date.available | 2020-12-23T10:03:58Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29138 | - |
dc.description.abstract | MAXI J1820+070, a black hole candidate first detected in early 2018 March, was observed by XMM-Newton during the outburst rise. In this letter we report on the spectral and timing analysis of the XMM-Newton X-ray and UV data, as well as contemporaneous X-ray data from the Swift satellite. The X-ray spectrum is well described by a hard thermal Comptonization continuum. The XMM-Newton X-ray light curve shows a pronounced dipping interval, and spectral analysis indicates that it is caused by a moderately ionized partial covering absorber. The XMM-Newton/OM U-filter data do not reveal any signs of the 17 h orbital modulation that was seen later on during the outburst decay. The UV/X-ray cross-correlation function shows a complex shape, with a peak at positive lags of about 4 s and a precognition dip at negative lags, which is absent during the X-ray dipping episode. Such shape could arise if the UV emission comes partially from synchrotron self-Compton emission near the black hole, as well as from reprocessing of the X-rays in the colder accretion disc further out. | en_US |
dc.language.iso | eng | en_US |
dc.title | X-ray dips and a complex UV/X-ray cross-correlation function in the black hole candidate MAXI J1820+070 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnrasl/slz089 | en_US |
dc.identifier.scopus | 2-s2.0-85068959818 | en_US |
dc.identifier.isi | 000482696200004 | en_US |
dc.identifier.url | https://academic.oup.com/mnrasl/article-abstract/488/1/L18/5511901?redirectedFrom=fulltext | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 488 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | L18 | 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 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019MNRAS.488L..18K | 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.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | IASF Palermo | - |
crisitem.author.dept | IASF Palermo | - |
crisitem.author.orcid | 0000-0002-6154-5843 | - |
crisitem.author.orcid | 0000-0002-1793-1050 | - |
crisitem.author.orcid | 0000-0001-7341-6603 | - |
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