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The spectral energy distribution of compact jets powered by internal shocks

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arxiv 1406.2208 v1 pith:3CYLEQ5N submitted 2014-06-09 astro-ph.HE

Julien Malzac This is my paper · ORCID
classification astro-ph.HE
keywords fluctuationsfactorinternallorentzshockscompactobservedspectral
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Internal shocks caused by fluctuations of the outflow velocity are likely to power the radio to IR emission of the compact jets of X-ray binaries. The dynamics of internal shocks and the resulting spectral energy distribution (SED) of the jet are very sensitive to the time-scales and amplitudes of the velocity fluctuations injected at the base of the jet. I present a new code designed to simulate the synchrotron emission of a compact jet powered by internal shocks. I also develop a semi-analytical formalism allowing one to estimate the observed SED of the jet as a function of the Power Spectral Density (PSD) of the assumed fluctuations of the Lorentz factor. I discuss the cases of a sine modulation of the Lorentz factor and Lorentz factor fluctuations with a power-law PSD shape. Independently of the details of the model, the observed nearly flat SEDs are obtained for PSDs of Lorentz factor fluctuations that are close to a flicker noise spectrum (i.e. P(f)~1/f). The model also presents a strong wavelength dependent variability that is similar to that observed in these sources.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 93 citations worldwide. Full citation record

  1. Spectropolarimetric detection of baryonic mass loading in a transient relativistic jet: application to the black hole X-ray binary Swift J1727.8$-$1613

    astro-ph.HE 2026-07 conditional novelty 7.0 of 10

    Transient Faraday-complex spectropolarimetric structure detected during radio flaring of Swift J1727 implies internal Faraday rotation from electron-proton jet plasma with rotating mass ~10^21 g, a small fraction of a...

  2. Energy-dependent Optical/Near-infrared and X-ray Correlations in Swift J1727.8-1613

    astro-ph.HE 2026-07 conditional novelty 6.0 of 10

    For Swift J1727.8–1613, the optical–X-ray correlation flips sign with X-ray energy, and the QPO lag is flat (~60–80 ms) from 2 to 150 keV.

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