0000000000651379

AUTHOR

Tm Belloni

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The pulse profile and spin evolution of the accreting pulsar in Terzan 5, IGR J17480-2446, during its 2010 outburst

2012

(abridged) We analyse the spectral and pulse properties of the 11 Hz transient accreting pulsar, IGR J17480-2446, in the globular cluster Terzan 5, considering all the available RXTE, Swift and INTEGRAL observations performed between October and November, 2010. By measuring the pulse phase evolution we conclude that the NS spun up at an average rate of =1.48(2)E-12 Hz/s, compatible with the accretion of the Keplerian angular momentum of matter at the inner disc boundary. Similar to other accreting pulsars, the stability of the pulse phases determined by using the second harmonic component is higher than that of the phases based on the fundamental frequency. Under the assumption that the sec…

High Energy Astrophysical Phenomena (astro-ph.HE)Settore FIS/05 - Astronomia E AstrofisicaAstrophysics::High Energy Astrophysical Phenomenaneutron pulsars: individual: IGR J17480-2446 X-rays: binaries [accretion accretion discs stars]FOS: Physical sciencesAstrophysics::Solar and Stellar Astrophysicsaccretion accretion discs stars: neutron pulsars: individual: IGR J17480-2446 X-rays: binariesAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Earth and Planetary AstrophysicsAstrophysics - High Energy Astrophysical PhenomenaAstrophysics::Galaxy Astrophysics
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