Search results for "Stars: individual: Scorpius X-1"

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Fe K α and Fe K β line detection in the NuSTAR spectrum of the ultra-bright Z source Scorpius X-1

2021

Context.Low-mass X-ray binaries hosting a low-magnetised neutron star, which accretes matter via Roche-lobe overflow, are generally grouped into two classes called Atoll and Z sources after the path described in their X-ray colour-colour diagrams. Scorpius X–1 is the brightest persistent low-mass X-ray binary known so far, and it is the prototype of the Z sources.Aims.We analysed the firstNuSTARobservation of this source to study its spectral emission, exploiting the high-statistics data collected by this satellite. The colour-colour diagram shows that the source was probably observed during the lower normal and flaring branches of its Z track. We separated the data from the two branches in…

PhysicsAccretionAccretion (meteorology)Continuum (design consultancy)Astronomy and AstrophysicsContext (language use)AstrophysicsStars: individual: Scorpius X-1X-rays: generalSpectral lineStars: neutronNeutron starX-rays: binariesSettore FIS/05 - Astronomia E AstrofisicaSpace and Planetary ScienceOptical depth (astrophysics)Accretion disksBlack-body radiationLine (formation)
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Accretion onto Neutron Stars: spectral and timing investigation of Low Mass X-ray Binaries

2021

Settore FIS/05 - Astronomia E Astrofisicaneutron stars X rays X rays binaries accretion accretion disks eclipses ephemerides stars: individual: 4U 1702-429 stars: individual: Scorpius X-1 stars: individual: X 1822-371 stars: individual: GX 17+2
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