Inhomogeneous Accretion Flow in X-ray Binary Pulsars

Details Inhomogeneous Accretion Flow in X-ray Binary Pulsars Inhomogeneous Accretion Flow in X-ray Binary Pulsars

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..797...87m&link_type=abstract

INTERACTING BINARIES: Accretion, Evolution, and Outcomes. AIP Conference Proceedings, Volume 797, pp. 87-94 (2005).

Physics

X-Ray Binary Stars, Pulsars, Neutron Stars, Accretion, X-Ray Binaries, Pulsars, Neutron Stars, Accretion And Accretion Disks

Scientific paper

We analyze the power spectrum of SAX J1808.4-3658, the first accreting millisecond binary pulsar discovered, to look for a broadening in the wings of the harmonic line, in analogy to what had been previously found in some high mass X-ray binaries. We indeed detect a broadening at the base of the 401 Hz peak, which is consistent with the convolution of the low frequency noise present in the power spectrum with the harmonic line. We interpret this as the result of a coupling between a fraction of the aperiodic and periodic variability, suggesting that at least part of the noise originates in a region close to the neutron star surface at the magnetic poles.

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