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http://hdl.handle.net/20.500.12386/24800
Titolo: | The soft X-ray spectrum of transient pulsars in the Small Magellanic Cloud | Autori: | LA PALOMBARA, NICOLA SIDOLI, Lara Esposito, P. Pintore, Fabio Tiengo, A. Mereghetti, S. |
Data pubblicazione: | 2016 | Titolo del volume in cui è pubblicato il poster: | XMM-Newton: The Next Decade | Da pagina:: | 96 | Abstract: | The Small Magellanic Cloud is characterized by a high number of transient accreting pulsars, which can reach luminosities up to 10^{38} erg s^{-1} during their outbursts. Due to the low Galactic interstellar absorption in the SMC direction, these sources offer a unique opportunity to investigate the soft end of the X-ray spectrum in accreting pulsars. In the last two years we observed with XMM-Newton the large outburst of two of these transient pulsars (RX J0059.2-7138 and SMC X-2). Thanks to the high throughput and spectral resolution of XMM, these observations allowed us to investigate at an unprecedented level of detail their spectral and timing properties at soft X-ray energies. We found that both sources show a pulsed emission also at low energies, and that they are characterized by a thermal component which dominates the source spectrum below 0.5 keV; moreover, we discovered several emission and absorption features, which are very likely produced by photoionization of plasma located above the inner regions of the accretion disc. <P /> | Titolo del convegno: | XMM-Newton: The Next Decade | Luogo del convegno: | ESAC - Madrid, Spain | Periodo del convegno: | 9-11 May, 2016 | URI: | http://hdl.handle.net/20.500.12386/24800 | URL: | https://www.cosmos.esa.int/web/xmm-newton/2016-workshop#proceedings https://www.cosmos.esa.int/documents/332006/1018949/PPetrucci_t.pdf |
ISBN: | online | Bibcode ADS: | 2016xnnd.confE..96L | Fulltext: | open |
È visualizzato nelle collezioni: | 4.09 Prodotti multimediali |
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