Table 1.

Glossary of symbols.

Observables
RsObserved radius of the forward shock along the major axis
RcObserved radius of the contact discontinuity along the major axis
MMach number of the forward shock
z/xObserved aspect ratio of the forward shock
ntTotal number density of the ambient medium at r = Rs
ρaMass density of the ambient medium at r = Rs
PaPressure of the ambient medium at r = Rs
αPower-law index of the ambient density profile
Model parameters
ETotal energy injected by the jet
tageAge of the system
tbDuration of jet activity
θ0Opening angle of the injected jet
LjOne-sided jet luminosity, i.e. Lj = E/2tb
Evolutionary time-scales
tspTime for the forward shock to become spherical
tbuoyTime-scale for buoyancy to pull the bubbles apart
tETime when the outflow reaches pressure equilibrium with the ambient medium
Properties of the outflow upon choking
RchRadius at which the jet is choked
tchTime at which the jet is choked
ζDimensionless ratio of Rch/Rs
ηDimensionless ratio of tch/tage
ρchDensity of the ambient medium at Rch
βhVelocity of the jet head upon choking
βcVelocity of the cocoon shock upon choking
βhcEstimate for the aspect ratio of the forward shock upon choking
ΣhSurface area of the jet head upon choking
θhAngle subtended by the jet head upon choking
Vfs,chVolume enclosed by the forward shock upon choking
Pc,chPressure in the cocoon upon choking
Λ(Rch)Parameter determining susceptibility to the magnetic kink instability
Observables
RsObserved radius of the forward shock along the major axis
RcObserved radius of the contact discontinuity along the major axis
MMach number of the forward shock
z/xObserved aspect ratio of the forward shock
ntTotal number density of the ambient medium at r = Rs
ρaMass density of the ambient medium at r = Rs
PaPressure of the ambient medium at r = Rs
αPower-law index of the ambient density profile
Model parameters
ETotal energy injected by the jet
tageAge of the system
tbDuration of jet activity
θ0Opening angle of the injected jet
LjOne-sided jet luminosity, i.e. Lj = E/2tb
Evolutionary time-scales
tspTime for the forward shock to become spherical
tbuoyTime-scale for buoyancy to pull the bubbles apart
tETime when the outflow reaches pressure equilibrium with the ambient medium
Properties of the outflow upon choking
RchRadius at which the jet is choked
tchTime at which the jet is choked
ζDimensionless ratio of Rch/Rs
ηDimensionless ratio of tch/tage
ρchDensity of the ambient medium at Rch
βhVelocity of the jet head upon choking
βcVelocity of the cocoon shock upon choking
βhcEstimate for the aspect ratio of the forward shock upon choking
ΣhSurface area of the jet head upon choking
θhAngle subtended by the jet head upon choking
Vfs,chVolume enclosed by the forward shock upon choking
Pc,chPressure in the cocoon upon choking
Λ(Rch)Parameter determining susceptibility to the magnetic kink instability
Table 1.

Glossary of symbols.

Observables
RsObserved radius of the forward shock along the major axis
RcObserved radius of the contact discontinuity along the major axis
MMach number of the forward shock
z/xObserved aspect ratio of the forward shock
ntTotal number density of the ambient medium at r = Rs
ρaMass density of the ambient medium at r = Rs
PaPressure of the ambient medium at r = Rs
αPower-law index of the ambient density profile
Model parameters
ETotal energy injected by the jet
tageAge of the system
tbDuration of jet activity
θ0Opening angle of the injected jet
LjOne-sided jet luminosity, i.e. Lj = E/2tb
Evolutionary time-scales
tspTime for the forward shock to become spherical
tbuoyTime-scale for buoyancy to pull the bubbles apart
tETime when the outflow reaches pressure equilibrium with the ambient medium
Properties of the outflow upon choking
RchRadius at which the jet is choked
tchTime at which the jet is choked
ζDimensionless ratio of Rch/Rs
ηDimensionless ratio of tch/tage
ρchDensity of the ambient medium at Rch
βhVelocity of the jet head upon choking
βcVelocity of the cocoon shock upon choking
βhcEstimate for the aspect ratio of the forward shock upon choking
ΣhSurface area of the jet head upon choking
θhAngle subtended by the jet head upon choking
Vfs,chVolume enclosed by the forward shock upon choking
Pc,chPressure in the cocoon upon choking
Λ(Rch)Parameter determining susceptibility to the magnetic kink instability
Observables
RsObserved radius of the forward shock along the major axis
RcObserved radius of the contact discontinuity along the major axis
MMach number of the forward shock
z/xObserved aspect ratio of the forward shock
ntTotal number density of the ambient medium at r = Rs
ρaMass density of the ambient medium at r = Rs
PaPressure of the ambient medium at r = Rs
αPower-law index of the ambient density profile
Model parameters
ETotal energy injected by the jet
tageAge of the system
tbDuration of jet activity
θ0Opening angle of the injected jet
LjOne-sided jet luminosity, i.e. Lj = E/2tb
Evolutionary time-scales
tspTime for the forward shock to become spherical
tbuoyTime-scale for buoyancy to pull the bubbles apart
tETime when the outflow reaches pressure equilibrium with the ambient medium
Properties of the outflow upon choking
RchRadius at which the jet is choked
tchTime at which the jet is choked
ζDimensionless ratio of Rch/Rs
ηDimensionless ratio of tch/tage
ρchDensity of the ambient medium at Rch
βhVelocity of the jet head upon choking
βcVelocity of the cocoon shock upon choking
βhcEstimate for the aspect ratio of the forward shock upon choking
ΣhSurface area of the jet head upon choking
θhAngle subtended by the jet head upon choking
Vfs,chVolume enclosed by the forward shock upon choking
Pc,chPressure in the cocoon upon choking
Λ(Rch)Parameter determining susceptibility to the magnetic kink instability
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