Maser emission from relativistic shocks and electron-ion energy equilibration

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Maser emission from relativistic shocks and
electron-ion energy equilibration

• Yuri Lyubarsky
• Ben-Gurion University, Israel

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Shock in electron-positron plasma
Langdon, Arons, Max 1988 Gallant, Hoshino,
Langdon, Arons, Max 1992
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G
e
M
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Electron in a strong wave
x
e
g
z
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Electron-ion flow in a strong wave
x
e
g
i
z
G
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Maser emission from electron ring
g
1)
dg
2)
McCray 1966 Zheleznyakov 1966 Sazonov 1970
SagivWaxman 2002
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radiation
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1.5D PIC simulations
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z8.088 8.101
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Nonlinear inverse Compton scattering
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Conclusions

• Relativistic shocks in weakly but non-negligibly
  magnetized
• plasmas emit strong, low-frequency
  electromagnetic
• waves

2. Upstream of the shock, these waves make
electrons lag behind ions.
3. A longitudinal electric field arises
electrons are accelerated eventually
equipartition with ions is achieved
4. Energy density of the waves may exceed the
energy density of the shock compressed
magnetic field