57 citations · 94 across the 5 of their papers we have counts for
9 papers · 1 filter
Orbital and superorbital variability and their coupling in X-ray binaries
Andrzej A. Zdziarski, Juri Poutanen, Askar Ibragimov +2
We review X-ray flux modulation from X-ray binaries on time scales corresponding to the orbital period and those at longer time scales (so called superorbital). Those modulations p…
A ~1-hour X-ray periodicity in an active galaxy RE J1034+396
Marek Gierlinski, Matthew Middleton, Martin Ward +1
Active galactic nuclei and quasars are thought to be scaled up versions of Galactic black hole binaries, powered by accretion onto supermassive black holes with masses of 10^6-10^9…
Dependence of the orbital modulation of X-rays from 4U 1820-303 on the accretion rate
A. A. Zdziarski, M. Gierlinski, L. Wen +1
We report the discovery, using RXTE data, of a dependence of the X-ray orbital modulation depth on the X-ray spectral state in the ultracompact atoll binary \source. This state (me…
The superorbital variability and triple nature of the X-ray source 4U 1820-303
A. A. Zdziarski, L. Wen, M. Gierlinski
We perform a comprehensive analysis of the superorbital modulation in the ultracompact X-ray source 4U 1820-303, consisting of a white dwarf accreting onto a neutron star. Based on…
Modeling the Energy Dependent Pulse Profiles of the Accreting Millisecond Pulsar SAX J1808.4-3658
Juri Poutanen, Marek Gierlinski
The pulse profiles of the accreting X-ray millisecond pulsar SAX J1808.4-3658 at different energies are studied. The two main emission component, a black body and a power-law tail,…
Phase-resolved spectra of the millisecond pulsar SAX J1808.4-3658
Marek Gierlinski, Chris Done, Didier Barret
We analyze the RXTE observations of the April 1998 outburst of SAX J1808.4-3658. We show that the soft blackbody component of the X-ray spectrum is from the hotspot on the neutron…