Search results for "X-Rays: galaxies -X-rays: individuals: SAX J1748.9-2021"

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A faint outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021 in NGC 6440

2018

SAX J1748.9-2021 is an accreting X-ray millisecond pulsar observed in outburst five times since its discovery in 1998. In early October 2017, the source started its sixth outburst, which lasted only ~13 days, significantly shorter than the typical 30 days duration of the previous outbursts. It reached a 0.3-70 keV unabsorbed peak luminosity of $\sim3\times10^{36}$ erg/s. This is the weakest outburst ever reported for this source to date. We analyzed almost simultaneous XMM-Newton, NuSTAR and INTEGRAL observations taken during the decaying phase of its 2017 outburst. We found that the spectral properties of SAX J1748.9-2021 are consistent with an absorbed Comptonization plus a blackbody comp…

Astrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesAstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesLuminositySettore FIS/05 - Astronomia E AstrofisicaMillisecond pulsar0103 physical sciencesAstrophysics::Solar and Stellar AstrophysicsAccretion accretion disc010303 astronomy & astrophysicsAstrophysics::Galaxy AstrophysicsPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)MillisecondAccretion (meteorology)010308 nuclear & particles physicsAstronomy and AstrophysicsAstronomy and AstrophysicCoronaX-rays: binarieNeutron starX-Rays: galaxies -X-rays: individuals: SAX J1748.9-2021Space and Planetary ScienceElectron temperaturebinaries; X-Rays: galaxies -X-rays: individuals: SAX J1748.9-2021; Astronomy and Astrophysics; Space and Planetary Science [Accretion accretion discs; X-rays]Astrophysics - High Energy Astrophysical PhenomenaX-ray pulsar
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