We model the UV/optical spectrum of the black hole binary Nova Muscae as a sum of black body emissions from the outer region of an accretion disk. We show for self-consistency that scattering effects in this region are not important. The black hole mass (M ≈ 6M⊙), the inclination angle (μ ≈ 0.5) and the distance to the source (D ≈ 5 kpc) have been constrained by optical observations during quie...

Abstract The relativistic electron dynamics in the radiation belts falls into two categories: diffusive processes, which particles are scattered randomly, and advective collectively driven one direction energy or space. In this work, we focus on advection can occur a timescale faster than diffusion for CME shock compressions of dayside magnetosphere. Test-particle simulations done electric magn...

We study a two-species competition model in patchy advective environment, where the species are subject to both directional drift and undirectional random dispersal between patches there losses of individuals downstream end (e.g., due flow into lake or ocean). The two competing assumed have same growth rates but different advection rates. focus our studies on properties an associated eigenvalue...