The Multiphase Absorption Systems toward PG 1206+459

Application of the Genetic Algorithm to Calculate the Interaction Parameters for Multiphase and Multicomponent Systems

A method based on the Genetic Algorithm (GA) was developed to study the phase behavior of multicomponent and multiphase systems. Upon application of the GA to the thermodynamic models which are commonly used to study the VLE, VLLE and LLE phase equilibria, the physically meaningful values for the Binary Interaction Parameters (BIP) of the models were obtained. Using the method proposed in t...

How Saturated Are Absorption Lines in the Broad Absorption Line Quasar Pg 1411+442 ?

Recently, convincing evidence was found for extremely large X-ray absorption by column densities > 1023 cm−2 in broad absorption line quasars. One consequence of this is that any soft X-ray emission from these QSOs would be the scattered light or leaked light from partially covering absorbing material. A detection of the unabsorbed soft X-ray and absorbed hard X-ray component will allow to dete...

Thomson Thick X-Ray Absorption in a Broad Absorption Line Quasar, PG 0946+301.

We present a deep ASCA observation of a broad absorption line quasar (BALQSO) PG 0946+301. The source was clearly detected in one of the gas imaging spectrometers, but not in any other detector. If BALQSOs have intrinsic X-ray spectra similar to normal radio-quiet quasars, our observations imply that there is Thomson thick X-ray absorption (NH greater, similar1024 cm-2) toward PG 0946+301. This...

Equilibrium in Multiphase Reacting Systems

Coarsening in Multicomponent Multiphase Systems