219 citations · 673 across the 9 of their papers we have counts for
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INTEGRAL observation of hard X-ray variability of the TeV binary LS5039 / RX J1826.2-1450
A. D. Hoffmann, D. Klochkov, A. Santangelo +4
LS 5039/RX J1826.2-1450 is one of the few High Mass X-ray binary systems from which radio and high energy TeV emission has been observed. Moreover, variability of the TeV emission…
Two ~35 day clocks in Her X-1: evidence for neutron star free precession
R. Staubert, D. Klochkov, K. Postnov +3
We present evidence for the existence of two ~35 day clocks in the Her X-1/HZ Her binary system. ~35 day modulations are observed 1) in the Turn-On cycles with two on- and two off-…
INTEGRAL observations of the variability of OAO 1657-415
J. Barnstedt, R. Staubert, A. Santangelo +7
The Galactic Plane Scan (GPS) was one of the core observation programmes of the INTEGRAL satellite. The highly variable accreting pulsar OAO 1657-415 was frequently observed within…
The appearance of magnetospheric instability in flaring activity at the onset of X-ray outbursts in A0535+26
K. Postnov, R. Staubert, A. Santangelo +3
We argue that X-ray flaring variability observed in the transient X-ray pulsar A 0535+26 is due to low-mode magnetospheric instability. This instability develops at the onset of ac…
A 0535+26 in the August/September 2005 outburst observed by RXTE and INTEGRAL
I. Caballero, P. Kretschmar, A. Santangelo +14
In this Letter we present results from INTEGRAL and RXTE observations of the spectral and timing behavior of the High Mass X-ray Binary A 0535+26 during its August/September 2005 n…
Discovery of a flux-related change of the cyclotron line energy in Her X-1
R. Staubert, N. I. Shakura, K. Postnov +5
We present the results of ten years of repeated measurements of the Cyclotron Resonance Scattering Feature (CRSF) in the spectrum of the binary X-ray pulsar Her X-1 and report the…