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http://hdl.handle.net/20.500.12386/28622
Titolo: | Gazing at the ultraslow magnetar in RCW 103 with NuSTAR and Swift | Autori: | Borghese, A. Coti Zelati, F. Esposito, P. Rea, N. DE LUCA, Andrea BACHETTI, Matteo ISRAEL, Gian Luca Perna, R. Pons, J. A. |
Data pubblicazione: | 2018 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 478 | Fascicolo: | 1 | Da pagina:: | 741 | Abstract: | We report on a new NuSTAR observation and on the ongoing Swift X-Ray Telescope monitoring campaign of the peculiar source 1E 161348-5055, located at the centre of the supernova remnant RCW 103, which is recovering from its last outburst in 2016 June. The X-ray spectrum at the epoch of the NuSTAR observation can be described by either two absorbed blackbodies (kT_BB_1 ∼ 0.5 keV, kT_BB_2 ∼ 1.2 keV) or an absorbed blackbody plus a power law (kT_BB_1 ∼ 0.6 keV, Γ ∼ 3.9). The observed flux was ∼9 × 10<SUP>-12</SUP> erg s<SUP>-1</SUP> cm<SUP>-2</SUP>, ∼3 times lower than what observed at the outburst onset, but about one order of magnitude higher than the historical quiescent level. A periodic modulation was detected at the known 6.67 h periodicity. The spectral decomposition and evolution along the outburst decay are consistent with 1E 161348-5055 being a magnetar, the slowest ever detected. | URI: | http://hdl.handle.net/20.500.12386/28622 | URL: | https://academic.oup.com/mnras/article/478/1/741/4990953 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/sty1119 | Bibcode ADS: | 2018MNRAS.478..741B | Fulltext: | open |
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