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Exact solution of one-dimensional relativistic jet with relativistic equation of state

Author(s)
Joshi, Raj KishorChattopadhyay, IndranilRyu, DongsuYadav, Lallan
Issued Date
2021-04
DOI
10.1093/mnras/stab364
URI
https://scholarworks.unist.ac.kr/handle/201301/52531
Fulltext
https://academic.oup.com/mnras/article/502/4/5227/6131875
Citation
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, v.502, no.4, pp.5227 - 5244
Abstract
We study the evolution of one-dimensional relativistic jets, using the exact solution of the Riemann problem for relativistic flows. For this purpose, we solve equations for the ideal special relativistic fluid composed of dissimilar particles in flat space-time and the thermodynamics of fluid is governed by a relativistic equation of state. We obtain the exact solution of jets impinging on denser ambient media. The time variation of the cross-section of the jet-head is modelled and incorporated. We present the initial condition that gives rise to a reverse shock. If the jet-head cross-section increases in time, the jet propagation speed slows down significantly and the reverse-shock may recede opposite to the propagation direction of the jet. We show that the composition of jet and ambient medium can affect the jet solution significantly. For instance, the propagation speed depends on the composition and is maximum for a pair-dominated jet, rather than a pure electron-positron or electron-proton jet. The propagation direction of the reverse-shock may also strongly depend on the composition of the jet.
Publisher
OXFORD UNIV PRESS
ISSN
0035-8711
Keyword (Author)
hydrodynamicsrelativistic processesshock wavesgalaxies: jetsstars: jets

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