6 papers
RX J1856.5-3754: Bare Quark Star or Naked Neutron Star ?
S. Zane, R. Turolla, J. J. Drake
Recent Chandra observations have shown that the soft X-ray spectrum from the isolated neutron star RX J1856.5-3754 is featureless and best fitted by a blackbody, in contrast with t…
Timing study of the isolated neutron star RX J0720.4-3125
Silvia Zane, Frank Haberl, Mark Cropper +4
We present a combined analysis of XMM-Newton, Chandra and Rosat observations of the isolated neutron star RX J0720.4-3125, spanning a total period of \sim 7 years. We develop a max…
X-ray line emission in Hercules X-1
M. A. Jimenez-Garate, C. J. Hailey, J. W. den Herder +2
We find line emission from the hydrogen- and/or helium-like ions of Ne, O, N and C in the low and short-on states of Her X-1, using the XMM-Newton Reflection Grating Spectrometer.…
XMM-Newton EPIC observations of Her X-1
G. Ramsay, S. Zane, M. A. Jimenez-Garate +2
We present spin-resolved X-ray data of the neutron star binary Her X-1. We find evidence that the Iron line at 6.4 keV originates from the same location as the blackbody X-ray comp…
Magnetized Atmospheres around Accreting Neutron Stars
S. Zane, R. Turolla, A. Treves
We present a detailed investigation of atmospheres around accreting neutron stars with high magnetic field ( G) and low luminosity ( erg/s). We…
The observability of old neutron stars accreting the interstellar medium: III. The solar proximity
Silvia Zane, Luca Zampieri, Roberto Turolla +1
Old isolated accreting neutron stars may show up among unidentified soft X--ray sources detected by the ROSAT All Sky Survey. We argue that the chances of identification are greate…