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SAX J1808.4-3658, an accreting millisecond pulsar shining in gamma rays?
E. de Ona Wilhelmi, A. Papitto, J. Li +7
We report the detection of a possible gamma-ray counterpart of the accreting millisecond pulsar SAX J1808.4-3658. The analysis of ~6 years of data from the Large Area Telescope on…
Signature of the presence of a third body orbiting around XB 1916-053
R. Iaria, T. Di Salvo, A. F. Gambino +9
The ultra-compact dipping source \object{XB 1916-053} has an orbital period of close to 50 min and a companion star with a very low mass (less than 0.1 M). The orbital pe…
Study of the reflection spectrum of the accreting neutron star GX 3+1 using XMM-Newton and INTEGRAL
Fabio Pintore, Tiziana Di Salvo, Enrico Bozzo +6
Broad emission features of abundant chemical elements, such as Iron, are commonly seen in the X-ray spectra of accreting compact objects and their studies can provide useful inform…
A possible cyclotron resonance scattering feature near 0.7 keV in X1822-371
R. Iaria, T. Di Salvo, M. Matranga +9
We analyse all available X-ray observations of X1822-371 made with XMM-Newton, Chandra, Suzaku and INTEGRAL satellites. The observations were not simultaneous. The Suzaku and INTEG…
Suzaku broad-band spectrum of 4U 1705-44: Probing the Reflection component in the hard state
T. Di Salvo, R. Iaria, M. Matranga +7
Iron emission lines at 6.4-6.97 keV, identified with Kalpha radiative transitions, are among the strongest discrete features in the X-ray band. These are one of the most powerful p…