It was realized quite early that broad-band X/γ-ray spectra of Galactic black holes (GBHs) can be explained in terms of successive Compton scatterings of soft photons (Comptonization) in a hot electron cloud. The Comptonizing medium was assumed to be thermal with a given temperature, Te, and a Thomson optical depth, τT . The theoretical spectra were computed by analytical (Shapiro, Lightman & E...

The present exploration discusses the combined effect of non-linear thermal radiation along with viscous dissipation and magnetic field through a porous medium. A distinctive aspect our work is simultaneous use wall material. impact rays essential in space technology high temperature processes. At point when variation very high, linear causes noticeable error. To overcome such errors, nonlinear...

We perform linear analysis of thermal instability in a contracting large cloud filled with warm H I gas and investigate the effect of metallicity and radiation flux. When the cloud reaches critical density n f , the cloud fragments into cool, dense condensations because of thermal instability. For a lower metallicity gas cloud, the value of n f is high. Collision between condensations will prod...

this paper addresses the combined effects of couple stresses, thermal radiation, viscous dissipation and slip condition on a free convective flow of a couple stress fluid induced by a vertical stretching sheet. the cogley- vincenti-gilles equilibrium model is employed to include the effects of thermal radiation in the study. the governing boundary layer equations are transformed into a system o...

We exploit the vastly increased sensitivity of the Expanded Very Large Array (EVLA) to study the radio continuum and polarization properties of the post– starburst, dwarf irregular galaxy IC10 at 6 cm, at a linear resolution of ∼ 50 pc. We find close agreement between radio continuum and Hα emission, from the brightest H II regions to the weaker emission in the disk. A quantitative analysis sho...

The low-luminosity black hole Sgr A* provides a testbed for models of Radiatively Inefficient Accretion Flows (RIAFs). Recent sub-millimeter linear polarization measurements of Sgr A* have provided evidence that the electrons in the accretion flow are relativistic over a large range of radii. Here, we show that these high temperatures result in elliptical plasma normal modes. Thus, polarized mi...