Multiband nonthermal radiative properties of pulsar wind nebulae

Aims. The nonthermal radiative properties of 18 pulsar wind nebulae (PWNe) are studied in the 1D leptonic model. Methods. The dynamical and radiative evolution of a PWN in a nonradiative supernova remnant are self-consistently investigated in this model. The leptons (electrons/positrons) are injecte...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2018-01, Vol.609, p.A110
Main Authors: Zhu, Bo-Tao, Zhang, Li, Fang, Jun
Format: Article
Language:English
Subjects:
acceleration of particles
Bolometers
Correlation
Cylinders
Electrons
Gamma rays
High energy astronomy
Leptons
Luminosity
Magnetic fields
Mathematical models
Nebulae
outflows
Parameters
Polar caps
Positrons
Pulsars
pulsars: general
Radiation
radiation mechanisms: non-thermal
stars: winds
Statistical analysis
Stellar evolution
Stellar winds
Supernova remnants
Surface brightness
Synchrotron radiation
Time dependence
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Summary:Aims. The nonthermal radiative properties of 18 pulsar wind nebulae (PWNe) are studied in the 1D leptonic model. Methods. The dynamical and radiative evolution of a PWN in a nonradiative supernova remnant are self-consistently investigated in this model. The leptons (electrons/positrons) are injected with a broken power-law form, and nonthermal emission from a PWN is mainly produced by time-dependent relativistic leptons through synchrotron radiation and inverse Compton process. Results. Observed spectral energy distributions (SEDs) of all 18 PWNe are reproduced well, where the indexes of low-energy electron components lie in the range of 1.0–1.8 and those of high-energy electron components in the range of 2.1–3.1. Our results show that FX/Fγ > 10 for young PWNe; 1
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/201629108