5 papers
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…
Accretion disk in Cyg X-1 in the soft state
Marek Gierlinski, Andrzej A. Zdziarski
We analyze the simultaneous ASCA/RXTE observation of Cyg X-1 in the soft state on 1996 May 30. We apply a multi-color disk model with a torque-free boundary condition in the pseudo…
X-rays and gamma-rays from accretion flows onto black holes in Seyferts and X-ray binaries
Andrzej A. Zdziarski, W. Neil Johnson, Juri Poutanen +2
We review observations and theoretical models of X-ray/gamma-ray spectra of radio-quiet Seyfert galaxies and of Galactic black-hole candidates (in the hard spectral state). The obs…
The first simultaneous X-ray/gamma-ray observations of Cyg X-1 by Ginga and OSSE
Marek Gierlinski, Andrzej A. Zdziarski, W. Neil Johnson +3
We present the results of 4 simultaneous observations of Cygnus X-1 by Ginga and OSSE. The X-ray/gamma-ray spectra can be described by an intrinsic continuum and a component due to…