Search results for "X-rays: individual: GRO J1744-28"

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Study of the accretion torque during the 2014 outburst of the X-ray pulsar GRO J1744−28

2017

We present the spectral and timing analysis of the X-ray pulsar GRO J1744-28 during its 2014 outburst using data collected with the X-ray satellites Swift, INTEGRAL, Chandra, and XMM-Newton. We derived, by phase-connected timing analysis of the observed pulses, an updated set of the source ephemeris. We were also able to investigate the spin-up of the X-ray pulsar as a consequence of the accretion torque during the outburst. Relating the spin-up rate and the mass accretion rate as $\dot{\nu}\propto\dot{M}^{\beta}$, we fitted the pulse phase delays obtaining a value of $\beta=0.96(3)$. Combining the results from the source spin-up frequency derivative and the flux estimation, we constrained …

accretion accretion discAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsEphemeris01 natural sciencesstars: neutronQuadratic equationPulsar0103 physical sciencesTorque010303 astronomy & astrophysicsGroup delay and phase delayHigh Energy Astrophysical Phenomena (astro-ph.HE)Physics010308 nuclear & particles physicsneutron; X-rays: binaries; X-rays: individual: GRO J1744-28 [accretion accretion disc; stars]Static timing analysisAstronomy and AstrophysicsX-rays: binarieAccretion (astrophysics)Space and Planetary ScienceAstrophysics::Earth and Planetary AstrophysicsAstrophysics - High Energy Astrophysical PhenomenaX-rays: individual: GRO J1744-28X-ray pulsarMonthly Notices of the Royal Astronomical Society
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