Spherical Relativistic Radiation Flows with Variable Eddington Factor

Details Spherical Relativistic Radiation Flows with Variable Eddington Factor Spherical Relativistic Radiation Flows with Variable Eddington Factor

2007-11-09

arxiv.org/abs/0711.1388v1

Astronomy and Astrophysics

Astrophysics

7 pages, 5 figures; PASJ 60 (2008) in press

Scientific paper

We solve spherically symmetric radiation flows under full special relativity with the help of a variable Eddington factor $f(\tau, \beta)$, where $\tau$ is the optical depth and $\beta$ is the flow velocity normalized by the speed of light. Relativistic radiation hydrodynamics under the moment formalism has several complex problems, such as a closure relation. Conventional moment equations closed with the traditional Eddington approximation in the comoving frame have singularity, beyond which the flow cannot be accelerated. In order to avoid such a pathological behavior inherent in the relativistic moment formalism, we propose a variable Eddington factor, which depends on the flow velocity as well as the optical depth, for the case of the sperically symmertic one-dimensional flow. We then calculate the relaticistic spherical flow with such variable Eddington factors to investigate the case that gas is accelerated by radiative force. As a result, it is shown that the gas speed reaches around the speed of light by radiation pressure.

Affiliated with

Also associated with

No associations

Rating

Spherical Relativistic Radiation Flows with Variable Eddington Factor does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spherical Relativistic Radiation Flows with Variable Eddington Factor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spherical Relativistic Radiation Flows with Variable Eddington Factor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-701898