COMPUTATION OF SYNTHETIC SPECTRA FROM SIMULATIONS OF RELATIVISTIC SHOCKS
Particle-in-cell (PIC) simulations of relativistic shocks are in principle capable of predicting the spectra of photons that are radiated incoherently by the accelerated particles. The most direct method evaluates the spectrum using the fields given by the Liénard-Wiechart potentials. However, for r...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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Institute of Physics Publishing
2010
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| _version_ | 1797064386867625984 |
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| author | Reville, B Kirk, J |
| author_facet | Reville, B Kirk, J |
| author_sort | Reville, B |
| collection | OXFORD |
| description | Particle-in-cell (PIC) simulations of relativistic shocks are in principle capable of predicting the spectra of photons that are radiated incoherently by the accelerated particles. The most direct method evaluates the spectrum using the fields given by the Liénard-Wiechart potentials. However, for relativistic particles this procedure is computationally expensive. Here we present an alternative method that uses the concept of the photon formation length. The algorithm is suitable for evaluating spectra both from particles moving in a specific realization of a turbulent electromagnetic field or from trajectories given as a finite, discrete time series by a PIC simulation. The main advantage of the method is that it identifies the intrinsic spectral features and filters out those that are artifacts of the limited time resolution and finite duration of input trajectories. © 2010. The American Astronomical Society. All rights reserved. Printed in the U.S.A. |
| first_indexed | 2024-03-06T21:13:33Z |
| format | Journal article |
| id | oxford-uuid:3efc9a23-e268-4297-ab48-d000dc0c2d67 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:13:33Z |
| publishDate | 2010 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | oxford-uuid:3efc9a23-e268-4297-ab48-d000dc0c2d672022-03-26T14:29:07ZCOMPUTATION OF SYNTHETIC SPECTRA FROM SIMULATIONS OF RELATIVISTIC SHOCKSJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3efc9a23-e268-4297-ab48-d000dc0c2d67EnglishSymplectic Elements at OxfordInstitute of Physics Publishing2010Reville, BKirk, JParticle-in-cell (PIC) simulations of relativistic shocks are in principle capable of predicting the spectra of photons that are radiated incoherently by the accelerated particles. The most direct method evaluates the spectrum using the fields given by the Liénard-Wiechart potentials. However, for relativistic particles this procedure is computationally expensive. Here we present an alternative method that uses the concept of the photon formation length. The algorithm is suitable for evaluating spectra both from particles moving in a specific realization of a turbulent electromagnetic field or from trajectories given as a finite, discrete time series by a PIC simulation. The main advantage of the method is that it identifies the intrinsic spectral features and filters out those that are artifacts of the limited time resolution and finite duration of input trajectories. © 2010. The American Astronomical Society. All rights reserved. Printed in the U.S.A. |
| spellingShingle | Reville, B Kirk, J COMPUTATION OF SYNTHETIC SPECTRA FROM SIMULATIONS OF RELATIVISTIC SHOCKS |
| title | COMPUTATION OF SYNTHETIC SPECTRA FROM SIMULATIONS OF RELATIVISTIC SHOCKS |
| title_full | COMPUTATION OF SYNTHETIC SPECTRA FROM SIMULATIONS OF RELATIVISTIC SHOCKS |
| title_fullStr | COMPUTATION OF SYNTHETIC SPECTRA FROM SIMULATIONS OF RELATIVISTIC SHOCKS |
| title_full_unstemmed | COMPUTATION OF SYNTHETIC SPECTRA FROM SIMULATIONS OF RELATIVISTIC SHOCKS |
| title_short | COMPUTATION OF SYNTHETIC SPECTRA FROM SIMULATIONS OF RELATIVISTIC SHOCKS |
| title_sort | computation of synthetic spectra from simulations of relativistic shocks |
| work_keys_str_mv | AT revilleb computationofsyntheticspectrafromsimulationsofrelativisticshocks AT kirkj computationofsyntheticspectrafromsimulationsofrelativisticshocks |