199 citations · 1.2k across the 38 of their papers we have counts for
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astro-ph2005
The correlations and anticorrelations in QPO data
M. A. Abramowicz, D. Barret, M. Bursa +4
Double peak kHz QPO frequencies in neutron star sources varies in time by a factor of hundreds Hz while in microquasar sources the frequencies are fixed and located at the line ν_2…
astro-ph2005
XMM-Newton X-ray and optical observations of the globular clusters M 55 and NGC 3201
N. A. Webb, P. J. Wheatley, D. Barret
We have observed two low concentration Galactic globular clusters with the X-ray observatory XMM-Newton. We detect 47 faint X-ray sources in the direction of M 55 and 62 in the fie…