Radiative disk winds from a self-similar slim disk

We investigated the radiation fields of a self-similar slim disk and the be havior of wind particles, which are driven by the radiation pressure of a s elf-similar slim disk. When the accretion rate is of the order of a critica l rate, the accretion disk must puff up in the vertical direction to form a so-called slim disk. In contrast to a standard alpha disk, this slim disk has two major features: i) the disk is geometrically (mildly) thick, and ii ) the radial motion is comparable to the rotational motion (advection). The se effects make the opening angle of the disk less than 180 degrees, and th e disk radiation fields are expected to enhance towards the center. However , we found that trajectories of wind particles are accelerated along the di sk surface. This indicates that the shape of the disk strongly influence th e motion of plasma particles. Furthermore, particles lose angular momentum by radiation drag, while gaining angular momentum from rotating radiation f ields. Taking into consideration the Compton drag, the income and expenditu re of angular momentum of wind particles is positive, and they tend to spre ad out in a radial direction.