An empirical kernel for Bethe-Heitler pair spectra is introduced and applied to argue that synchrotron emission from these pairs can explain gamma-ray emission in low- and intermediate-peaked blazars for jet regions of size ~10^15 cm and B = 5-500 G.
Magnetic Driving of Relativistic Outflows in Active Galactic Nuclei. I. Interpretation of Parsec-Scale Accelerations
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abstract
There is growing evidence that relativistic jets in active galactic nuclei undergo extended (parsec-scale) acceleration. We argue that, contrary to some suggestions in the literature, this acceleration cannot be purely hydrodynamic. Using exact semianalytic solutions of the relativistic MHD equations, we demonstrate that the parsec-scale acceleration to relativistic speeds inferred in sources like the radio galaxy NGC 6251 and the quasar 3C 345 can be attributed to magnetic driving. Additional observational implications of this model will be explored in future papers in this series.
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A closer look at the electromagnetic signatures of Bethe-Heitler pair production process in blazars
An empirical kernel for Bethe-Heitler pair spectra is introduced and applied to argue that synchrotron emission from these pairs can explain gamma-ray emission in low- and intermediate-peaked blazars for jet regions of size ~10^15 cm and B = 5-500 G.