The jet-disk symbiosis without maximal jets: 1-D hydrodynamical jets revisited

Abstract

In this work we discuss the recent criticism by Zdziarski of the maximal jet model derived in Falcke & Biermann (1995). We agree with Zdziarski that in general a jet's internal energy is not bounded by its rest-mass energy density. We describe the effects of the mistake on conclusions that have been made using the maximal jet model and show when a maximal jet is an appropriate assumption. The maximal jet model was used to derive a 1-D hydrodynamical model of jets in agnjet, a model that does multiwavelength fitting of quiescent/hard state X-ray binaries and low-luminosity active galactic nuclei. We correct algebraic mistakes made in the derivation of the 1-D Euler equation and relax the maximal jet assumption. We show that the corrections cause minor differences as long as the jet has a small opening angle and a small terminal Lorentz factor. We find that the major conclusion from the maximal jet model, the jet-disk symbiosis, can be generally applied to astrophysical jets. We also show that isothermal jets are required to match the flat radio spectra seen in low-luminosity X-ray binaries and active galactic nuclei, in agreement with other works.

7 pages, accepted by A&A

References in corpus (14)

• The Physics of Gamma-Ray Bursts and Relativistic Jets
• Magnetic acceleration of relativistic AGN jets
• Regulation of black-hole accretion by a disk wind during a violent outburst of V404 Cygni
• Results from an extensive simultaneous broadband campaign on the underluminous active nucleus M81*: further evidence for mass-scaling accretion in black holes
• Opening angles, Lorentz factors and confinement of X-ray binary jets
• Jet-lag in Sgr A*: What size and timing measurements tell us about the central black hole in the Milky Way
• A Model for Emission from Jets in X-ray Binaries: Consequences of a Single Acceleration Episode
• ALMA and VLA measurements of frequency-dependent time lags in Sagittarius A*: evidence for a relativistic outflow
• On The Efficiency of Jet Production in Radio Galaxies
• Flares, wind and nebulae: the 2015 December mini-outburst of V404 Cygni
• Constraints on Relativistic Jets in Quiescent Black Hole X-ray Binaries from Broadband Spectral Modeling
• Mass-scaling as a method to constrain outflows and particle acceleration from low-luminosity accreting black holes
• Evidence for deceleration in the radio jets of GRS1915+105?
• Wind, jet, hybrid corona and hard X-ray flares: multiwavelength evolution of GRO J1655-40 during the 2005 outburst rise

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