190 citations · 2.6k across the 115 of their papers we have counts for
9 papers · 1 filter
Spectral and timing properties of IGR J00291+5934 during its 2015 outburst
A. Sanna, F. Pintore, E. Bozzo +8
We report on the spectral and timing properties of the accreting millisecond X-ray pulsar IGR J00291+5934 observed by XMM-Newton and NuSTAR during its 2015 outburst. The source is…
Relation between spectral changes and the presence of the lower kHz QPO in the neutron-star low-mass X-ray binary 4U 1636-53
Guobao Zhang, Mariano Méndez, Andrea Sanna +2
We fitted the -keV spectrum of all the observations of the neutron-star low-mass X-ray binary 4U 163653 taken with the {\it Rossi X-ray Timing Explorer} using a model tha…
Discovery of a soft X-ray 8 mHz QPO from the accreting millisecond pulsar IGR J00291+5934
C. Ferrigno, E. Bozzo, A. Sanna +7
In this paper, we report on the analysis of the peculiar X-ray variability displayed by the accreting millisecond X-ray pulsar IGR J00291+5934 in a 80 ks-long joint NuSTAR and XMM-…
Discovery of a new accreting millisecond X-ray pulsar in the globular cluster NGC 2808
A. Sanna, A. Papitto, L. Burderi +6
We report on the discovery of coherent pulsations at a period of 2.9 ms from the X-ray transient MAXI J0911-655 in the globular cluster NGC 2808. We observed X-ray pulsations at a…
Discovery of hard phase lags in the pulsed emission of GRO J1744-28
Antonino D'Aì, Luciano Burderi, Tiziana Di Salvo +4
We report on the discovery and energy dependence of hard phase lags in the 2.14 Hz pulsed profiles of GRO J1744-28. We used data from XMM-Newton and NuSTAR. We were able to well co…
Phase lags of quasi-periodic oscillations across source states in the low-mass X-ray binary 4U 1636-53
Marcio G B de Avellar, Mariano Méndez, Diego Altamirano +2
While there are many dynamical mechanisms and models that try to explain the origin and phenomenology of the quasi-periodic oscillations (QPOs) seen in the X-ray light curves of lo…