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XMM-Newton discovery of 7 s pulsations in the isolated neutron star RX J1856.5-3754
Andrea Tiengo, Sandro Mereghetti
Thanks to the high counting statistics provided by a recent XMM-Newton observation of RX J1856.5-3754, we have discovered that this isolated neutron star pulsates at a period of 7.…
Evidence for 1122 Hz X-Ray Burst Oscillations from the Neutron-Star X-Ray Transient XTE J1739-285
P. Kaaret, Z. Prieskorn, J. J. M. in 't Zand +6
We report on millisecond variability from the X-ray transient XTE J1739-285. We detected six X-ray type I bursts and found evidence for oscillations at 1122 +/- 0.3 Hz in the brigh…
INTEGRAL observations of the X-ray burster 4U1850-087: first detection of hard X-ray emission extending above 50keV
Lara Sidoli, Ada Paizis, Angela Bazzano +1
The X-ray burster 4U1850-087, located in the globular cluster NGC6712, is an ultracompact binary likely harbouring a degenerate companion.The source has been observed with INTEGRAL…
INTEGRAL observations of IGRJ11215-5952: the first Supergiant Fast X-ray Transient displaying periodic outbursts
Lara Sidoli, Ada Paizis, Sandro Mereghetti
The hard X-ray source IGRJ11215-5952, discovered with INTEGRAL during a brief outburst in 2005, has been proposed as a new member of the class of Supergiant Fast X-ray Transients.…
Unveiling Soft Gamma-Ray Repeaters with INTEGRAL
D. Gotz, S. Mereghetti, K. Hurley
Thanks to INTEGRAL's long exposures of the Galactic Plane, the two brightest Soft Gamma-Ray Repeaters, SGR 1806-20 and SGR 1900+14, have been monitored and studied in detail for th…
Five years of SGR 1900+14 observations with BeppoSAX
P. Esposito, S. Mereghetti, A. Tiengo +3
We present a systematic analysis of all the BeppoSAX data of the soft gamma-ray repeater SGR 1900+14: these observations allowed us to study the long term properties of the source…