143 citations · 571 across the 15 of their papers we have counts for
15 papers
Photoionization Models for High Density Gas
T. Kallman, M. Bautista, J. Deprince +5
Relativistically broadened and redshifted 6.4 -- 6.9 keV iron K lines are observed from many accretion powered objects, including X-ray binaries and active galactic nuclei (AGN). E…
The Problem of the High Iron Abundance in Accretion Disks around Black Holes
J. A. García, T. R. Kallman, M. Bautista +4
In most accreting black-hole systems the copious X-rays commonly observed from the inner-most regions are accompanied by a reflection spectrum. The latter is the signature of energ…
K-shell photoabsorption and photoionization of trace elements. II. Isoelectronic sequences with electron number
C. Mendoza, M. A. Bautista, P. Palmeri +3
We are concerned with improving the diagnostic potential of the K lines and edges of elements with low cosmic abundances that are observed in the X-ray spectra of supernova remnant…
A Comprehensive X-ray Absorption Model for Atomic Oxygen
T. W. Gorczyca, M. A. Bautista, M. F. Hasoglu +9
An analytical formula is developed to represent accurately the photoabsorption cross section of O I for all energies of interest in X-ray spectral modeling. In the vicinity of the…
Photoionization modeling of oxygen K absorption in the interstellar medium:the Chandra grating spectra of XTE J1817-330
E. Gatuzz, J. García, C. Mendoza +6
We present detailed analyses of oxygen K absorption in the interstellar medium (ISM) using four high-resolution Chandra spectra towards the X-ray low-mass binary XTE J1817-330. The…
K-Shell Photoabsorption of Magnesium Ions
M. F. Hasoglu, Sh. A. Abdel-Naby, E. Gatuzz +4
X-ray photoabsorption cross sections have been computed for all magnesium ions using the -matrix method. A comparison with the other available data for Mg II-Mg X shows good qua…