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The long-term enhanced brightness of the magnetar 1E 1547.0-5408
Francesco Coti Zelati, Alice Borghese, Nanda Rea +6
We present the evolution of the X-ray emission properties of the magnetar 1E 1547.0-5408 since February 2004 over a time period covering three outbursts. We analyzed new and archiv…
Diffuse X-ray emission around an ultraluminous X-ray pulsar
Andrea Belfiore, Paolo Esposito, Fabio Pintore +17
Ultraluminous X-ray sources (ULXs) are extragalactic X-ray emitters located off-center of their host galaxy and with a luminosity in excess of a few ,…
Detailed X-ray spectroscopy of the magnetar 1E 2259+586
D. Pizzocaro, A. Tiengo, S. Mereghetti +7
Magnetic field geometry is expected to play a fundamental role in magnetar activity. The discovery of a phase-variable absorption feature in the X-ray spectrum of SGR 0418+5729, in…
Supergiant Fast X-ray Transients uncovered by the EXTraS project: flares reveal the development of magnetospheric instability in accreting neutron stars
L. Sidoli, K. A. Postnov, A. Belfiore +5
The low luminosity, X-ray flaring activity, of the sub-class of high mass X-ray binaries called Supergiant Fast X-ray Transients, has been investigated using XMM-Newton public obse…
Follow-up observations of X-ray emitting hot subdwarf stars: the compact He-poor sdO star Feige 34
N. La Palombara, S. Mereghetti, P. Esposito +1
We report on results obtained with the XMM-Newton observation of Feige 34 carried out in April 2018. This is the first spectroscopic X-ray observation of a compact and helium-poor…