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5 papers · 2 filters
NuSTAR and XMM-Newton observations of the Arches cluster in 2015: fading hard X-ray emission from the molecular cloud
Roman Krivonos, Maica Clavel, JaeSub Hong +6
We present results of long NuSTAR (200 ks) and XMM-Newton (100 ks) observations of the Arches stellar cluster, a source of bright thermal (kT~2 keV) X-rays with prominent Fe XXV K_…
Expanding hot flow in the black hole binary SWIFT J1753.5-0127: evidence from optical timing
A. Veledina, P. Gandhi, R. Hynes +5
We describe the evolution of optical and X-ray temporal characteristics during the outburst decline of the black hole X-ray binary SWIFT J1753.5-0127. The optical/X-ray cross-corre…
Rosseland and flux mean opacities for Compton scattering
Juri Poutanen
Rosseland mean opacity plays an important role in theories of stellar evolution and X-ray burst models. In the high-temperature regime, when most of the gas is completely ionized,…
The origin of seed photons for Comptonization in the black hole binary Swift J1753.5-0127
J. J. E. Kajava, A. Veledina, S. Tsygankov +1
Aims. The black hole binary SWIFT J1753.5-0127 is providing a unique data set to study accretion flows. Various investigations of this system and of other black holes have not, how…
Propeller effect in two brightest transient X-ray pulsars: 4U 0115+63 and V 0332+53
S. S. Tsygankov, A. A. Lutovinov, V. Doroshenko +3
We present the results of the monitoring programmes performed with the Swift/XRT telescope and aimed specifically to detect an abrupt decrease of the observed flux associated with…