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http://hdl.handle.net/20.500.12386/24447
Titolo: | Discovery of two new fast X-ray transients with INTEGRAL: IGR J03346+4414 and IGR J20344+3913 | Autori: | SGUERA, VITO SIDOLI, Lara PAIZIS, ADAMANTIA Bird, A. J. |
Data pubblicazione: | 2016 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 463 | Fascicolo: | 3 | Da pagina:: | 2885 | Abstract: | We report on the discovery of two fast X-ray transients (FXTs) from analysis of archival INTEGRAL data. Both are characterized by a remarkable hard X-ray activity above 20 keV, in terms of duration (∼15 and 30 min, respectively), peak flux (∼10<SUP>-9</SUP> erg cm<SUP>-2</SUP> s<SUP>-1</SUP>) and dynamic range (∼2400 and 1360, respectively). Swift/X-ray telescope follow-up observations failed to detect any quiescent or low-level soft X-ray emission from either of the two FXTs, providing an upper limit of the order of a few times 10<SUP>-12</SUP> erg cm<SUP>-2</SUP> s<SUP>-1</SUP>. The main spectral and temporal Imager on Board INTEGRAL Satellite (IBIS)/INTEGRAL Soft Gamma-Ray Imager (ISGRI) characteristics are presented and discussed with the aim of inferring possible hints on their nature. | URI: | http://hdl.handle.net/20.500.12386/24447 | URL: | https://academic.oup.com/mnras/article/463/3/2885/2646593 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stw2183 | Bibcode ADS: | 2016MNRAS.463.2885S | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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