The role of kink instability in Poynting-flux dominated jets

By D. Giannios, H. Spruit. 2006

154 citations recorded by the source corpus.

The role of kink instability in magnetically driven jets is explored through numerical one-dimensional steady relativistic MHD calculations. The instability is shown to have enough time to grow and influence the dynamics of Poynting-flux dominated jets. In the case of AGN jets, the flow becomes kinetic flux dominated at distances >1000 rg because of the rapid dissipation of Poynting flux. When applied to GRB outflows, the model predicts more gradual Poynting dissipation and moderately magnetized flow at distances of ∼10 16 cm where the deceleration of the ejecta due to interaction with the external medium is expected. The energy released by the instability can power the compact “blazar zone” emission and the prompt emission of GRB outflows with high radiative efficiencies.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/6e9b10b46d685bc4da9d7164e9f97663af05f347

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In Astronomy and Astrophysics

1. Bing Zhang
2. B. Metzger
3. Pawan Kumar
4. E. Liang
5. L. Sironi
6. A. Spitkovsky
7. D. Giannios
8. E. Quataert

In Nuclear and High Energy Physics

1. Bing Zhang
2. A. Spitkovsky
3. D. Giannios
4. L. Sironi
5. B. Metzger
6. J. McKinney
7. B. Cerutti
8. E. Quataert

Citations in the corpus

• PARTICLE ACCELERATION IN RELATIVISTIC MAGNETIZED COLLISIONLESS ELECTRON–ION SHOCKS (2010, background): “Alternatively, electron acceleration may occur not in shocks but in reconnection layers of a Poynting-dominated jet (e.g., Lyutikov & Blandford 2003; Giannios & Spruit 2006).”
• Reconnection-driven plasmoids in blazars: fast flares on a slow envelope (2012, background): “Current-Driven Instabilities (CDIs) are likely to be the most relevant in strongly magnetized jets (Eichler 1993; Begelman 1998; Giannios & Spruit 2006).”
• Dynamics and high-energy emission of the flaring HST-1 knot in the M 87 jet (2006, result): “Giannios & Spruit (2006) argue that the Poynting-flux dominated nuclear outflows in AGNs become kinetic flux dominated at distances 103 r g, i.e. in the case of M 87 radio galaxy, at about 0.1 pc projected (for θ = 20◦), in agreement with our assumption.”
• Prompt emission spectra from the photosphere of a GRB (2006, background): “Magnetic energy can be dissipated directly through reconnection in a flow where the magnetic field changes polarity on small scales (AC flow; Drenkhahn 2002; Drenkhahn & Spruit 2002) or via MHD instabilities in an axisymmetric flow (Giannios & Spruit 2006).”
• Non-thermal particle acceleration in collisionless relativistic electron-proton reconnection (2016, background): “Ghisellini G., Celotti A., Fossati G., Maraschi L., Comastri A., 1998, MNRAS, 301, 451 Giannios D., 2013, MNRAS, 431, 355 Giannios D., Spruit H. C., 2006, A& A, 450, 887 Giannios D., Uzdensky D. A., Begelman M. C., 2009, MNRAS, 395, L29 Giannios D., Uzdensky D. A., Begelman M. C., 2010, MNRAS, 402, ”
• The Proto-Magnetar Model for Gamma-Ray Bursts (2010, background): “…are variable on timescales down to fractions of a millisecond (Schaefer & Walker 1999; Walker et al. 7 One possibility is if instabilities act within the jet to randomize the magnetic field, such that it behaves as a γ = 4/3 relativistic gas (Heinz & Begelman 2000; Giannios & Spruit 2006). c© ????”
• Prompt GRB emission from gradual energy dissipation (2007, background): “If the flow is launched with field of large scale, energy dissipation can be a result of global MHD instabilities (such as current-driven instabilities; e.g., Lyutikov & Blandford 2003; Giannios & Spruit 2006).”
• A Reconnection Switch to Trigger gamma-Ray Burst Jet Dissipation (2010, background): “…dissipation through magnetic reconnection in GRB jets has been suggested as a possible source of acceleration and emission at large radii from the central compact object (Thompson 1994; Spruit, Daigne & Drenkhahn 2001; Drenkhahn & Spruit 2002a; Giannios & Spruit 2006; Lyutikov 2006b).”
• Stability of relativistic jets from rotating, accreting black holes via fully three-dimensional magnetohydrodynamic simulations (2008, background): “…radiation, and high-energy particles due to shocks (e.g. Blandford & Konigl 1979a), reconnection (e.g. Drenkhahn & Spruit 2002; Lyutikov 2006; Giannios & Spruit 2006), viscous shear, turbulent cascade (e.g. Begelman 1998), and a break-down of the ideal singlecomponent fluid approximation…”
• Testing the Curvature Effect and Internal Origin of Gamma-Ray Burst Prompt Emissions and X-Ray Flares with Swift Data (2006, background): “The most widely discussed scenario is the internal shock model (Rees & Mészáros 1994; Kobayashi et al. 1997; Daigne & Mochkovitch 1998), but magnetic dissipation at an internal radius is also possible (e.g. Usov 1992; Thompson 1994; Drenkhahn & Spruit 2002; Giannios & Spruit 2006).”