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Swift/XRT observations of superorbital modulations in wind-fed supergiant X-ray binaries
P. Romano, E. Bozzo, N. Islam +1
We present the first Swift/XRT long-term monitoring of 2S 0114+650, a wind-fed supergiant X-ray binary for which both orbital and superorbital periods are known (P_orb~11.6d and P_…
A magnetar giant flare in the nearby starburst galaxy M82
Sandro Mereghetti, Michela Rigoselli, Ruben Salvaterra +32
Giant flares, short explosive events releasing up to 10 erg of energy in the gamma-ray band in less than one second, are the most spectacular manifestation of magnetars, you…
Discovery of spin-phase dependent QPOs in the super-critical accretion regime from the X-ray pulsar RX J0440.9+4431
Christian Malacaria, Daniela Huppenkothen, Oliver J. Roberts +5
RX J0440.9+4431 is an accreting X-ray pulsar (XRP) that remained relatively unexplored until recently, when major X-ray outburst activity enabled more in-depth studies. Here, we re…
Swift, NuSTAR, and INTEGRAL observations of the symbiotic X-ray binary IGR J16194-2810
E. Bozzo, P. Romano, C. Ferrigno +1
We report on a simultaneous observational campaign with both Swift/XRT and NuSTAR targeting the symbiotic X-ray binary IGR J16194-2810. The main goal of the campaign was to investi…
X-ray flashes from the low-mass X-ray binary IGR J17407-2808
L. Ducci, C. Malacaria, P. Romano +4
IGR J17407-2808 is an enigmatic and poorly studied X-ray binary that was recently observed quasi-simultaneously with NuSTAR and XMM-Newton. In this paper we report the results of t…
A detailed analysis of X-ray emission line velocities of Capella from over 20 years of Chandra/HETG spectroscopy
E. Bozzo, D. P. Huenemoerder, N. Produit +3
Capella is the brightest chromospherically active binary in the sky, hosting a cooler G8III giant (Aa) and an hotter G1III companion (Ab). The source has been extensively observed…