Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27072
DC Field | Value | Language |
---|---|---|
dc.contributor.author | SGUERA, VITO | en_US |
dc.contributor.author | SIDOLI, Lara | en_US |
dc.contributor.author | PAIZIS, ADAMANTIA | en_US |
dc.contributor.author | MASETTI, NICOLA | en_US |
dc.contributor.author | Bird, A. J. | en_US |
dc.contributor.author | BAZZANO, ANGELA | en_US |
dc.date.accessioned | 2020-09-03T06:40:14Z | - |
dc.date.available | 2020-09-03T06:40:14Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27072 | - |
dc.description.abstract | We present the results from INTEGRAL and Swift/XRT observations of the hitherto poorly studied unidentified X-ray transient AX J1949.8+2534, and on archival multiwavelength observations of field objects. Bright hard X-ray outbursts have been discovered above 20 keV for the first time, the measured duty cycle and dynamic range are of the order of ∼4 per cent and ≥ 630, respectively. The source was also detected during a low soft X-ray state (∼2 × 10<SUP>-12</SUP> erg cm<SUP>-2</SUP> s<SUP>-1</SUP>) thanks to a Swift/XRT followup, which allowed for the first time to perform a soft X-ray spectral analysis as well as significantly improve the source positional uncertainty from arcminute to arcsecond size. From archival near-infrared data, we pinpointed two bright objects as most likely counterparts whose photometric properties are compatible with an early-type spectral nature. This strongly supports a high-mass X-ray binary (HMXB) scenario for AX J1949.8+2534, specifically a Supergiant Fast X-ray Transient (more likely) or alternatively a Be HMXB. | en_US |
dc.language.iso | eng | en_US |
dc.title | First hard X-ray detection and broad-band X-ray study of the unidentified transient AX J1949.8+2534 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stx1111 | en_US |
dc.identifier.scopus | 2-s2.0-85051375938 | en_US |
dc.identifier.isi | 000406837900010 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/469/4/3901/3813436 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 469 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 3901 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 6 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | GBR | 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 | 2017MNRAS.469.3901S | 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.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0001-8202-9381 | - |
crisitem.author.orcid | 0000-0001-9705-2883 | - |
crisitem.author.orcid | 0000-0001-5067-0377 | - |
crisitem.author.orcid | 0000-0001-9487-7740 | - |
crisitem.author.orcid | 0000-0002-2017-4396 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
stx1111.pdf | Pdf editoriale | 1.16 MB | Adobe PDF | View/Open |
Sguera_2017.pdf | postprint | 346.05 kB | Adobe PDF | View/Open |
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