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3D MHD Simulations of accreting neutron stars: evidence of QPO emission from the surface
Matteo Bachetti, Marina Romanova, Akshay Kulkarni +3
3D Magnetohydrodynamic simulations show that when matter accretes onto neutron stars, in particular if the misalignment angle is small, it does not constantly fall at a fixed spot.…
QPO emission from moving hot spots on the surface of neutron stars: a model
Matteo Bachetti, Marina Romanova, Akshay Kulkarni +2
We present recent results of 3D magnetohydrodynamic simulations of neutron stars with small misalignment angles, as regards the features in lightcurves produced by regular movement…
A ionized reflecting skin above the accretion disk of GX 349+2
R. Iaria, A. D'Aí, T. Di Salvo +4
The broad emission features in the Fe-Kalpha region of X-ray binary spectra represent an invaluable probe to constrain the geometry and the physics of these systems. Several Low Ma…
A relativistically smeared spectrum in the neutron star X-ray Binary 4U 1705-44: Looking at the inner accretion disc with X-ray spectroscopy
T. Di Salvo, A. D'Ai', R. Iaria +9
Iron emission lines at 6.4-6.97 keV, identified with fluorescent Kalpha transitions, are among the strongest discrete features in the X-ray band. These are therefore one of the mos…
Timing of the 2008 Outburst of SAX J1808.4-3658 with XMM-Newton: A Stable Orbital Period Derivative over Ten Years
L. Burderi, A. Riggio, T. Di Salvo +4
We report on a timing analysis performed on a 62-ks long XMM-Newton observation of the accreting millisecond pulsar SAX J1808.4-3658 during the latest X-ray outburst that started o…
Searching for pulsed emission from XTE J0929-314 at high radio frequencies
M. N. Iacolina, M. Burgay, L. Burderi +2
The aim of this work is to search for radio signals in the quiescent phase of accreting millisecond X-ray pulsars, in this way giving an ultimate proof of the recycling model, ther…