0000000001074800

AUTHOR

S. Martinez-nunez

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Correlated X-ray spectral and timing variability of the Be/X-ray binary V0332+53/BQ Camelopardalis during a type II outburst

2005

We have used INTEGRAL & RXTE data to investigate the timing properties of the source in correlation with its spectral states as defined by different positions in the colour-colour diagram. The source shows two distinct branches in the colour-colour diagram that resemble those of the Z sources. The hard branch (similar to the horizontal branch of Z sources) is characterised by a low-amplitude change of the hard colour compared to the change in the soft colour. In the soft branch (analogue to the normal branch) the amplitude of variability of the hard colour is about three times larger than that of the soft colour. As the count rate decreases the source moves up gradually through the soft…

Astrophysics::High Energy Astrophysical PhenomenaPhase (waves)X-ray binaryFOS: Physical sciencesFluxAstrophysicsAstrophysicsUNESCO::ASTRONOMÍA Y ASTROFÍSICABinary starsPulsarStars ; Individual star ; V0332+54 ; BQ Cam ; X-rays ; Binary stars ; Neutron – stars: binaries: close –stars: emission line BeX-raysBQ CamPhysicsAstrophysics (astro-ph)Astronomy and AstrophysicsHorizontal branchStars:ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia [UNESCO]Neutron starAmplitudeSpace and Planetary ScienceV0332+54binaries: close –stars: emission line Be [Neutron – stars]Individual starUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogoniaNoise (radio):ASTRONOMÍA Y ASTROFÍSICA [UNESCO]
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