The pulsar gamma-ray emission from the high-resolution dissipative magnetospheres

TL;DR

This paper models pulsar gamma-ray emission using high-resolution dissipative magnetospheres with Aristotelian electrodynamics, successfully reproducing observed light curves and spectra.

Contribution

It introduces a high-resolution simulation approach for dissipative pulsar magnetospheres that accurately captures current sheet regions and reproduces observed gamma-ray features.

Findings

Reproduces double-peak light curves consistent with Fermi data.

Achieves GeV cut-off energy spectra matching observations.

Demonstrates the importance of pair multiplicity in emission modeling.

Abstract

The pulsar light curves and energy spectra are explored in dissipative pulsar magnetospheres with the Aristotelian electrodynamics (AE), where particle acceleration is fully balanced with radiation reaction. The AE magnetospheres with non-zero pair multiplicity are computed by a pseudo-spectral method in the co-moving frame. The dissipative region near the current sheet outside the LC is accurately captured by the high-resolution simulation. The pulsar light curves and spectra are computed by the test particle trajectory method including the influence of both the consistent accelerating electric field and radiation reaction. Our results can generally reproduce the double-peak light curves and the GeV cut-off energy spectra in agreement with the Fermi observations for the pair multiplicity $\kappa\gtrsim1$.