Precursor Wave Amplification by Ion–Electron Coupling through Wakefield in Relativistic Shocks

We investigated electromagnetic precursor wave emission in relativistic shocks by using two-dimensional particle-in-cell simulations. We found that the wave amplitude is significantly enhanced by a positive feedback process associated with ion–electron coupling through the wakefields for high magnetization. The wakefields collapse during the nonlinear process of the parametric decay instability in the near-upstream region, where nonthermal electrons and ions are generated. The intense coherent emission and the particle acceleration may operate in high-energy astrophysical objects.

Note:

7 pages, 4 figures, accepted to ApJL

References(45)

Figures(0)

Searches for Anisotropies in the Arrival Directions of the Highest Energy Cosmic Rays Detected by the Pierre Auger Observatory

Pierre Auger

Collaboration

•

Alexander Aab
(
- Siegen U.
)

et al.

- Astrophys.J. 804 (2015) 1, 15
•
e-Print:
- 1411.6111
•
DOI:
- 10.1088/0004-637X/804/1/15

Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above $8 \times 10^{18}$ eV

Pierre Auger

Collaboration

•

Alexander Aab
(
- Nijmegen U., IMAPP
)

et al.

- Science 357 (2017) 6537, 1266-1270
•
e-Print:
- 1709.07321
•
DOI:
- 10.1126/science.aan4338

An Indication of anisotropy in arrival directions of ultra-high-energy cosmic rays through comparison to the flux pattern of extragalactic gamma-ray sources

Pierre Auger

Collaboration

•

Alexander Aab
(
- Nijmegen U., IMAPP
)

et al.

- Astrophys.J.Lett. 853 (2018) 2, L29
•
e-Print:
- 1801.06160
•
DOI:
- 10.3847/2041-8213/aaa66d

Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert

IceCube

Collaboration

•

M.G. Aartsen
(
- Canterbury U.
)

et al.

- Science 361 (2018) 6398, 147-151
•
e-Print:
- 1807.08794
•
DOI:
- 10.1126/science.aat2890

Indications of Intermediate-Scale Anisotropy of Cosmic Rays with Energy Greater Than 57 EeV in the Northern Sky Measured with the Surface Detector of the Telescope Array Experiment

Telescope Array

Collaboration

•

R.U. Abbasi
(
- Utah U.
)

et al.

- Astrophys.J.Lett. 790 (2014) L21
•
e-Print:
- 1404.5890
•
DOI:
- 10.1088/2041-8205/790/2/L21

Heating and Non-thermal Particle Acceleration in Relativistic, Transverse Magnetosonic Shock Waves in Proton-Electron-Positron Plasmas

E. Amato
(
- Arcetri Observ.
)
,
J. Arons
(
- UC, Berkeley, Astron. Dept.
)

- Astrophys.J. 653 (2006) 325-338
•
e-Print:
- astro-ph/0609034
•
DOI:
- 10.1086/508050

Magnetars in the metagalaxy: an origin for ultrahigh-energy cosmic rays in the nearby universe

Jonathan Arons
(
- UC, Berkeley, Astron. Dept.
)

- Astrophys.J. 589 (2003) 871-892
•
e-Print:
- astro-ph/0208444
•
DOI:
- 10.1086/374776

Synchrotron emission from shock waves in active galactic nuclei

- Astrophys.J. 322 (1987) 643-649
•
DOI:
- 10.1086/165759

Plasma wakefield acceleration for ultrahigh-energy cosmic rays

Pisin Chen
(
- SLAC
)
,
Toshiki Tajima
(
- JAERI, Kyoto
)
,
Yoshiyuki Takahashi
(
- Alabama U., Huntsville
)

- Phys.Rev.Lett. 89 (2002) 161101
•
e-Print:
- astro-ph/0205287
•
DOI:
- 10.1103/PhysRevLett.89.161101

DOI:
- 10.1063/1.1705933

DOI:
- 10.1086/171326

The Origin of Ultrahigh-Energy Cosmic Rays

A.M. Hillas
(
- Leeds U.
)

- Ann.Rev.Astron.Astrophys. 22 (1984) 425-444,
- In *Burbidge, G. ( Ed.) Et Al.: Annual Review Of Astronomy and Astrophysics, Vol. 22*, 425-444,
- In *Lamb, F.k. ( Ed.): High Energy Astrophysics*, 277-296
•
DOI:
- 10.1146/annurev.aa.22.090184.002233