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Variations in the dip properties of the low-mass X-ray binary XB 1254-69 observed with XMM-Newton and INTEGRAL
M. Diaz Trigo, A. N. Parmar, L. Boirin +3
We have analysed data from five XMM-Newton observations of XB 1254-69, one of them simultaneous with INTEGRAL, to investigate the mechanism responsible for the highly variable dips…
The Burst Spectra of EXO 0748-676 during a Long 2003 XMM-Newton Observation
J. Cottam, F. Paerels, M. Méndez +4
Gravitationally redshifted absorption lines from highly ionized iron have been previously identified in the burst spectra of the neutron star in EXO 0748-676. To repeat this detect…
Discovery of X-ray burst triplets in EXO 0748-676
L. Boirin, L. Keek, M. Mendez +5
[Abridged] Type-I X-ray bursts are thermonuclear flashes that take place on the surface of accreting neutron stars. The wait time between consecutive bursts is set by the time requ…
A highly-ionized absorber as a new explanation for the spectral changes during dips from X-ray binaries
L. Boirin, M. Diaz Trigo, M. Mendez +2
Until now, the spectral changes observed from persistent to dipping intervals in dipping low-mass X-ray binaries were explained by invoking progressive and partial covering of an e…
Spectral changes during dipping in low-mass X-ray binaries due to highly-ionized absorbers
M. Diaz Trigo, A. N. Parmar, L. Boirin +2
X-ray observations have revealed that many microquasars and low-mass X-ray binaries (LMXBs) exhibit narrow absorption features identified with resonant absorption from Fe XXV and F…
A highly-ionized absorber in the X-ray binary 4U 1323-62: a new explanation for the dipping phenomenon
L. Boirin, M. Mendez, M. Diaz Trigo +2
We report the detection of narrow Fe XXV and Fe XXVI X-ray absorption lines at 6.68 +/- 0.04 keV and 6.97 +/- 0.05 keV in the persistent emission of the dipping low-mass X-ray bina…