Viscous boundary layers of radiation-dominated, relativistic jets. I. the two-stream model

Eric R. Coughlin, Mitchell C. Begelman

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Using the relativistic equations of radiation hydrodynamics in the viscous limit, we analyze the boundary layers that develop between radiation-dominated jets and their environments. In this paper we present the solution for the self-similar, 2D, plane-parallel two-stream problem, wherein the jet and the ambient medium are considered to be separate, interacting fluids, and we compare our results to those of previous authors. (In a companion paper we investigate an alternative scenario, known as the free-streaming jet model.) Consistent with past findings, we show that the boundary layer that develops between the jet and its surroundings creates a region of low-density material. These models may be applicable to sources such as super-Eddington tidal disruption events and long gamma-ray bursts.

Original languageEnglish (US)
Article number1
JournalAstrophysical Journal
Issue number1
StatePublished - Aug 10 2015
Externally publishedYes


  • galaxies: jets
  • gamma-ray burst: general
  • radiation: dynamics
  • relativistic processes

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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