GRB and blazar jets shining through their stripes
Dimitrios Giannios, Dmitri A. Uzdensky

TL;DR
This paper proposes a model of striped relativistic jets driven by magnetic field reversals caused by accretion disc variability, explaining observed spectra, flaring timescales, and ongoing acceleration in blazars and GRBs.
Contribution
It introduces a new model of striped jets with magnetic reconnection driven by disc variability, accounting for jet acceleration and emission features.
Findings
Gradual jet acceleration driven by stripe annihilation.
Broad dissipation peak at large distances from black hole.
Explains flat/inverted spectra and flaring timescales in blazars and GRBs.
Abstract
Black-hole driven relativistic astrophysical jets, such as blazars and gamma-ray bursts (GRBs), are powerful sources of electromagnetic radiation. Their emission is powered by some energy dissipation and particle acceleration mechanism operating in-situ at large distances from the black hole. We propose that the formation of the dissipative structures in the jet is controlled by the time variability of the accretion disc. We argue that the open magnetic field lines through the black hole, which drive a strongly magnetized jet, may have their polarity reversing over time-scales related to the growth of the magneto-rotational dynamo in the disc. Consequently, the jet is characterized by an alternating toroidal field polarity along its propagation axis, i.e., it is a "striped jet". Magnetic reconnection in the current sheets that form between the stripes dissipates the alternating-field…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
