Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28412
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Turner, T. J. | en_US |
dc.contributor.author | Reeves, J. N. | en_US |
dc.contributor.author | BRAITO, Valentina | en_US |
dc.contributor.author | Lobban, A. | en_US |
dc.contributor.author | Kraemer, S. | en_US |
dc.contributor.author | Miller, L. | en_US |
dc.date.accessioned | 2020-11-18T11:51:52Z | - |
dc.date.available | 2020-11-18T11:51:52Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28412 | - |
dc.description.abstract | NGC 3227 exhibits rapid flux and spectral variability in the X-ray band. To understand this behaviour, we conducted a coordinated observing campaign using 320 ks of XMM-Newton exposures together with 160 ks of overlapping NuSTAR observations, spanning a month. Here, we present a rapid variability event that occurs toward the end of the campaign. The spectral hardening event is accompanied by a change in the depth of an unresolved transition array (UTA), whose time-dependent behaviour is resolved using the RGS data. This UTA fingerprint allows us to identify this as a transit event, where a clump of gas having N_ H ∼ 5 × 10^{22} {atoms cm^{-2}}, log ξ ∼ 2 occults {∼ } 60{{ per cent}} of the continuum photons over the course of approximately a day. This occulting gas is likely associated with clouds in the inner broad-line region. An additional zone of gas with lower column and higher ionization, matches the outflow velocity of the variable zone, and may represent transmission through the cloud limb. | en_US |
dc.language.iso | eng | en_US |
dc.title | A rapid occultation event in NGC 3227 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/sty2447 | en_US |
dc.identifier.scopus | 2-s2.0-85056112598 | en_US |
dc.identifier.isi | 000449764000074 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/481/2/2470/5091829 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 481 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 2470 | 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 | 2018MNRAS.481.2470T | 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. Brera | - |
crisitem.author.orcid | 0000-0002-2629-4989 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
sty2447.pdf | Pdf editoriale | 2.55 MB | Adobe PDF | View/Open |
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Items in DSpace are published in Open Access, unless otherwise indicated.