2024/03/10 by Gang Cao, Cao, Gang, X. C. Yang +1
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #FOS: Physical sciences #Geophysics and Gravity Measurements #Geophysics and Sensor Technology #High Energy Astrophysical Phenomena (astro-ph.HE) #Pulsars and Gravitational Waves Research
paper · pdf · doi:10.48550/arxiv.2403.06179
openalex publication_date 2024/03/10 · openalex created_date 2024/03/13 · openalex updated_date 2026/07/28
We study the pulsar energy-dependent γ-ray light curves and spectra from curvature radiation in the dissipative magnetospheres. The dissipative magnetospheres with the combined force-free (FFE) and Aristotelian (AE) are computed by a pseudo-spectral method with the high-resolution simulation in the rotating coordinate system, which produces a near force-free field structure with the dissipative region only near the equatorial current sheet outside the light cylinder (LC). We use the test particle trajectory method to compute the energy-dependent γ-ray light curves, phase-average and phase-resolved spectra by including both the accelerating electric field and radiation reaction. The predicted energy-dependent γ-ray light curves and spectra are then compared with those of the Vela pulsar observed by Fermi. Our results can generally reproduce the observed trends of the energy-dependent γ-ray light curves and spectra for the Vela pulsar.