Viscous boundary layers of radiation-dominated, relativistic jets. II. The free-streaming jet model

Abstract

We analyze the interaction of a radiation-dominated jet and its surroundings using the equations of radiation hydrodynamics in the viscous limit. In a previous paper we considered the two-stream scenario, which treats the jet and its surroundings as distinct media interacting through radiation viscous forces. Here we present an alternative boundary layer model, known as the free-streaming jet model -- where a narrow stream of fluid is injected into a static medium -- and present solutions where the flow is ultrarelativistic and the boundary layer is dominated by radiation. It is shown that these jets entrain material from their surroundings and that their cores have a lower density of scatterers and a harder spectrum of photons, leading to observational consequences for lines of sight that look "down the barrel of the jet." These jetted outflow models may be applicable to the jets produced during long gamma-ray bursts and super-Eddington phases of tidal disruption events.

10 pages, 10 figures. Accepted for publication in ApJ

References in corpus (5)

• Formation of Supermassive Black Holes by Direct Collapse in Pregalactic Halos
• The Nature of SS433 and the Ultraluminous X-ray Sources
• Quasistars: Accreting black holes inside massive envelopes
• The general relativistic equations of radiation hydrodynamics in the viscous limit
• Viscous boundary layers of radiation-dominated, relativistic jets. I. The two-stream model

Cited by in corpus (6)

• Finding, characterizing and classifying variable sources in multi-epoch sky surveys: QSOs and RR Lyrae in PS1 3$\pi$ data
• Tidal Disruption of a White Dwarf by a Black Hole: The Diversity of Nucleosynthesis, Explosion Energy, and the Fate of Debris Streams
• Tidal disruption by extreme mass ratio binaries and application to ASASSN-15lh
• Structured, relativistic jets driven by radiation
• Viscous boundary layers of radiation-dominated, relativistic jets. I. The two-stream model
• The radiation hydrodynamics of relativistic shear flows