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Spectral and temporal properties of the supergiant fast X-ray transient IGR J18483-0311 observed by INTEGRAL
L. Ducci, V. Doroshenko, M. Sasaki +4
IGR J18483-0311 is a supergiant fast X-ray transient whose compact object is located in a wide (18.5 d) and eccentric (e~0.4) orbit, which shows sporadic outbursts that reach X-ray…
Discovery of a 6.4 h black hole binary in NGC 4490
P. Esposito, G. L. Israel, L. Sidoli +3
We report on the discovery with Chandra of a strong modulation (~90% pulsed fraction) at ~6.4 h from the source CXOU J123030.3+413853 in the star-forming, low-metallicity spiral ga…
The Swift Supergiant Fast X-ray Transients Project: a review, new results, and future perspectives
P. Romano, V. Mangano, L. Ducci +9
We present a review of the Supergiant Fast X-ray Transients (SFXT) Project, a systematic investigation of the properties of SFXTs with a strategy that combines Swift monitoring pro…
The hot-blackbody spectral excess in low-luminosity High-Mass X-Ray Binaries
N. La Palombara, S. Mereghetti, L. Sidoli +2
We report on the main results obtained thanks to an observation campaign with XMM-Newton of four persistent, low-luminosity (Lx ~ 10^34 erg/s) and long-period (P > 200 s) Be accret…