Ultra-Relativistic Winds

Details Ultra-Relativistic Winds Ultra-Relativistic Winds

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.0801g&link_type=abstract

American Astronomical Society, 191st AAS Meeting, #08.01; Bulletin of the American Astronomical Society, Vol. 29, p.1222

Astronomy and Astrophysics

Astronomy

Scientific paper

We consider an ultra-relativistic wind consisting of electron-positron pairs and photons with the principal goal of finding the asymptotic Lorentz factor gamma_ ∞ for zero baryon number. The wind is assumed to originate at radius r_i where it has a Lorentz factor gamma_i and a temperature T_i sufficiently high to maintain pair equilibrium. As r increases, T decreases and becomes less than the temperature corresponding to the electron mass m_e, after which non-equilibrium effects become important. Further out in the flow the optical depth tau drops below 1, but the pairs may still be accelerated by the photons until tau falls below ~ 10(-4) . Radiative transfer calculations show that only at this point do the radiation flux and pressure start to deviate significantly from their blackbody values. The acceleration of the pairs increases gamma by a factor ~ 45 as compared to its value at the photosphere; it is shown to approach gamma_ ∞ 1.4* 10(3) gamma_ i(3/4) T_i/m_e.

Affiliated with

Also associated with

No associations

Rating

Ultra-Relativistic Winds 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 Ultra-Relativistic Winds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultra-Relativistic Winds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1172801