The Phase-resolved High Energy Spectrum of the Crab Pulsar
arXiv:0704.1534 · doi:10.1016/j.asr.2007.02.076
Abstract
We present a modified outer gap model to study the phase-resolved spectra of the Crab pulsar. A theoretical double peak profile of the light curve containing the whole phase is shown to be consistent with the observed light curve of the Crab pulsar by shifting the inner boundary of the outer gap inwardly to stellar radii above the neutron star surface. In this model, the radial distances of the photons corresponding to different phases can be determined in the numerical calculation. Also the local electrodynamics, such as the accelerating electric field, the curvature radius of the magnetic field line and the soft photon energy, are sensitive to the radial distances to the neutron star. Using a synchrotron self-Compton mechanism, the phase-resolved spectra with the energy range from 100 eV to 3 GeV of the Crab pulsar can also be explained.
arXiv comment15 pages, 4 figures To appear in Advances in Space Science Research
References in corpus (18)
- -Ray Pulsars: Emission Zones and Viewing Geometries
- Gamma Ray Pulsars: Emission from Extended Polar Cap Cascades
- Two-Pole Caustic Model for High-Energy Lightcurves of Pulsars
- High-Altitude Particle Acceleration and Radiation in Pulsar Slot Gaps
- The Crab pulsar in the 0.75-30 MeV range as seen by CGRO COMPTEL
- Phase-Resolved Studies of the High-Energy Gamma-Ray Emission from the Crab, Geminga, and Vela Pulsars
- Gamma-Ray Pulsars: Beaming Evolution, Stats and Unident. EGRET Sources
- An Outer Gap Model of High-Energy Emission from Rotation-Powered Pulsars
- Gamma-ray Luminosity and Death Lines of Pulsars with Outer Gaps
- Particle Accelerator in Pulsar Magnetospheres: Super Goldreich-Julian Current with Ion Emission from the Neutron Star Surface
- Electrodynamics of Outer-Gap Accelerator: Formation of Soft Power-law Spectrum Between 100 MeV and 3 GeV
- Polarimetric Properties of the Crab Pulsar between 1.4 and 8.4 GHz
- Polarization of high-energy emissions from the Crab pulsar
- A pulsar outer gap model with trans-field structure
- Electrodynamic Structure of an Outer Gap Accelerator: Location of the Gap and the Gamma-ray Emission from the Crab Pulsar
- One-dimensional Electric Field Structure of an Outer Gap Accelerator - III. Location of the Gap and the Gamma-ray Spectrum
- Outer-magnetospheric model for Vela-like pulsars:formation of sub-GeV spectrum
- Fine phase resolved spectroscopy of the X-ray emission of the Crab pulsar (PSR B0531+21) observed with BeppoSAX