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Radiation from Relativistic Shocks with Turbulent Magnetic FieldsRecent PIC simulations of relativistic electron-positron (electron-ion) jets injected into a stationary medium show that particle acceleration occurs at shocked region. The simulation results show that the Weibel instability is responsible for generating and amplifying highly nonuniform, small-scale magnetic fields. These magnetic fields contribute to the electron's transverse deflection behind the shock. The "jitter" radiation from deflected electrons in turbulent magnetic fields has different properties than synchrotron radiation which is calculated in a uniform magnetic field. This jitter radiation may be important to understanding the complex time evolution and/or spectral structure in gamma-ray bursts, relativistic jets, and supernova remnants. New recent calculation of spectra with various different Lorentz factors of jets (two electrons) and initial magnetic fields. New spectra based on small simulations will be presented.
Document ID
20090025873
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Nishkawa, K.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Medvedev, M.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Zhang, B.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Hardee, P.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Niemiec, J.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Mizuno, A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Nordlund, A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Frederiksen, J.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Sol, H.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Pohl, M.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Hartmann, D. H.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Oka, M.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Fishman, J.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 24, 2013
Publication Date
March 30, 2009
Subject Category
Physics Of Elementary Particles And Fields
Report/Patent Number
M09-0296
Meeting Information
Meeting: Frontier of Space Astrophysics: Gamma Ray Bursts and Neutron Stars
Location: Cairo, Alexandria
Country: Egypt
Start Date: March 30, 2009
End Date: April 4, 2009
Distribution Limits
Public
Copyright
Other

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