0000000001011811

AUTHOR

Konstantin Postnov

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The pre-outburst flare of the A 0535+26 August/September 2005 outburst

2008

We study the spectral and temporal behavior of the High Mass X-ray Binary A 0535+26 during a `pre-outburst flare' which took place ~5 d before the peak of a normal (type I) outburst in August/September 2005. We compare the studied behavior with that observed during the outburst. We analyse RXTE observations that monitored A 0535+26 during the outburst. We complete spectral and timing analyses of the data. We study the evolution of the pulse period, present energy-dependent pulse profiles both at the initial pre-outburst flare and close to outburst maximum, and measure how the cyclotron resonance-scattering feature (hereafter CRSF) evolves. We present three main results: a constant period P=…

Astrophysics::High Energy Astrophysical PhenomenaX-ray binarymagnetic fields [Stars]FOS: Physical sciencesChamp magnetiqueAstrophysicsPhoton energyAstrophysicslaw.inventionPulse periodAccretion disclaw:ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Fuentes de Rayos X [UNESCO]X-rays : binaries; Stars : magnetic fields; Stars : individual : A 0535+26UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Fuentes de Rayos XAstrophysics::Solar and Stellar AstrophysicsSpectral analysisPhysicsAstrophysics (astro-ph)Astronomy and AstrophysicsSpace and Planetary ScienceHigh massbinaries [X-rays]individual : A 0535+26 [Stars]UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::EstrellasFlare:ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Estrellas [UNESCO]
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