Extremely efficient Zevatron in rotating AGN magnetospheres
arXiv:1404.3176 · doi:10.1093/mnras/stu2042
Abstract
A novel model of particle acceleration in the magnetospheres of rotating active galactic nuclei (AGN) is constructed.The particle energies may be boosted up to eV in a two step mechanism: In the first stage, the Langmuir waves are centrifugally excited and amplified by means of a parametric process that efficiently pumps rotational energy to excite electrostatic fields. In the second stage, the electrostatic energy is transferred to particle kinetic energy via Landau damping made possible by rapid "Langmuir collapse". The time-scale for parametric pumping of Langmuir waves turns out to be small compared to the kinematic time-scale, indicating high efficiency of the first process. The second process of "Langmuir collapse" - the creation of caverns or low density regions - also happens rapidly for the characteristic parameters of the AGN magnetosphere. The Langmuir collapse creates appropriate conditions for transferring electric energy to boost up already high particle energies to much higher values. It is further shown that various energy loss mechanism are relatively weak, and do not impose any significant constraints on maximum achievable energies.
7 pages
References in corpus (8)
- Observation of the suppression of the flux of cosmic rays above 4x10^19eV
- On the magnetic acceleration and collimation of astrophysical outflows
- On the efficiency of particle acceleration by rotating magnetospheres in AGN
- On particle acceleration and very high energy gamma-ray emission in Crab-like pulsars
- Magnetocentrifugal acceleration of plasma in a nonaxisymmetric magnetosphere
- Is very high energy emission from the BL Lac 1ES 0806+524 centrifugally driven?
- Centrifugally driven electrostatic instability in extragalactic jets
- Revisit of Correlation Analysis between Active Galactic Nuclei and Ultra-High Energy Cosmic Rays
Cited by in corpus (10)
- A Possible Two-component Flux for the High Energy Neutrino Events at IceCube
- On the rotationally driven pevatron in the centre of the Milky Way
- A cosmic Zevatron based on cyclotron auto-resonance
- Newly born extragalactic millisecond pulsars as efficient emitters of PeV neutrinos
- New mechanism of acceleration of particles by stellar black holes
- Resonant energization of particles by radio AGN
- Diffuse flux of PeV neutrinos from centrifugally accelerated protons in active galactic nuclei
- Electromagnetic Vortex solitons in the magnetospheres of super-Eddington AGN
- Rotationally-driven VHE emission from the Vela pulsar
- On the novel mechanism of acceleration of cosmic particles