Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/31702
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yang, Jinyi | en_US |
dc.contributor.author | Fan, Xiaohui | en_US |
dc.contributor.author | Wang, Feige | en_US |
dc.contributor.author | LANZUISI, Giorgio | en_US |
dc.contributor.author | NANNI, RICCARDO | en_US |
dc.contributor.author | CAPPI, MASSIMO | en_US |
dc.contributor.author | Chartas, George | en_US |
dc.contributor.author | DADINA, MAURO | en_US |
dc.contributor.author | DECARLI, ROBERTO | en_US |
dc.contributor.author | Jin, Xiangyu | en_US |
dc.contributor.author | Keeton, Charles R. | en_US |
dc.contributor.author | Venemans, Bram P. | en_US |
dc.contributor.author | Walter, Fabian | en_US |
dc.contributor.author | Wang, Ran | en_US |
dc.contributor.author | Wu, Xue Bing | en_US |
dc.contributor.author | Yue, Minghao | en_US |
dc.contributor.author | Zabludoff, Ann | en_US |
dc.date.accessioned | 2022-03-18T13:16:28Z | - |
dc.date.available | 2022-03-18T13:16:28Z | - |
dc.date.issued | 2022 | en_US |
dc.identifier.issn | 2041-8205 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31702 | - |
dc.description.abstract | We report X-ray observations of the most distant known gravitationally lensed quasar, J0439+1634 at z = 6.52, which is also a broad absorption line (BAL) quasar, using the XMM-Newton Observatory. With a 130 ks exposure, the quasar is significantly detected as a point source at the optical position with a total of net counts using the EPIC instrument. By fitting a power law plus Galactic absorption model to the observed spectra, we obtain a spectral slope of . The derived optical-to-X-ray spectral slope a ox is , suggesting that the X-ray emission of J0439+1634 is weaker by a factor of 18 than the expectation based on its 2500 Å luminosity and the average a ox versus luminosity relationship. This is the first time that an X-ray weak BAL quasar at z > 6 has been observed spectroscopically. Its X-ray weakness is consistent with the properties of BAL quasars at lower redshift. By fitting a model including an intrinsic absorption component, we obtain intrinsic column densities of and , assuming a fixed G of 1.9 and a free G, respectively. The intrinsic rest-frame 2-10 keV luminosity is derived as (9.4-15.1) 1043 erg s-1, after correcting for lensing magnification (µ = 51.3). The absorbed power-law model fitting indicates that J0439+1634 is the highest redshift obscured quasar with a direct measurement of the absorbing column density. The intrinsic high column density absorption can reduce the X-ray luminosity by a factor of 3-7, which also indicates that this quasar could be a candidate intrinsically X-ray weak quasar. | en_US |
dc.language.iso | eng | en_US |
dc.title | Deep XMM-Newton Observations of an X-ray Weak Broad Absorption Line Quasar at z = 6.5 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/2041-8213/ac45f2 | en_US |
dc.identifier.scopus | 2-s2.0-85123242963 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/2041-8213/ac45f2 | en_US |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85123242963 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 924 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | L25 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL LETTERS | 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 | 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 | 2041-8205 | - |
crisitem.journal.ance | E196528 | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0001-9094-0984 | - |
crisitem.author.orcid | 0000-0001-6966-8920 | - |
crisitem.author.orcid | 0000-0002-7858-7564 | - |
crisitem.author.orcid | 0000-0002-2662-8803 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Yang_2022_ApJL_924_L25.pdf | Pdf editoriale | 620.8 kB | Adobe PDF | View/Open |
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