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The 11 years of low-activity of the magnetar XTE J1810-197
Fabio Pintore, Sandro Mereghetti, Paolo Esposito +5
In 2003, the magnetar XTE J1810-197 started an outburst that lasted until early 2007. In the following 11 years, the source stayed in a quiescent/low activity phase. XTE J1810-197…
Spectral analysis of SXP59.0 during its 2017 outburst and properties of the soft excess in X-ray binary pulsars
N. La Palombara, P. Esposito, F. Pintore +3
We report the results provided by the XMM-Newton observation of the X-ray binary pulsar SXP59.0 during its most recent outburst in April 2017. The source was detected at $f_{\rm X}…
SWIFT J1756.9-2508: spectral and timing properties of its 2018 outburst
A. Sanna, F. Pintore, A. Riggio +8
We discuss the spectral and timing properties of the accreting millisecond X-ray pulsar SWIFT J1756.9-2508 observed by XMM-Newton, NICER and NuSTAR during the X-ray outburst occurr…
The two Ultraluminous X-ray sources in the galaxy NGC 925
F. Pintore, L. Zampieri, S. Mereghetti +7
NGC 925 ULX-1 and ULX-2 are two ultraluminous X-ray sources in the galaxy NGC 925, at a distance of 8.5 Mpc. For the first time, we analyzed high quality, simultaneous XMM-Newton a…
A faint outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021 in NGC 6440
F. Pintore, A. Sanna, A. Riggio +6
SAX J1748.9-2021 is an accreting X-ray millisecond pulsar observed in outburst five times since its discovery in 1998. In early October 2017, the source started its sixth outburst,…
A new Ultraluminous X-ray source in the galaxy NGC 5907
F. Pintore, A. Belfiore, G. Novara +14
We report on the serendipitous discovery of a new transient in NGC 5907, at a peak luminosity of 6.4x10^{39} erg/s. The source was undetected in previous 2012 Chandra observations…