Exploring the possible gluon condensation signature in gamma-ray emission from pulsars

Abstract

The very high energy gamma-ray emissions from pulsars are usually considered to be dominated by leptonic scenario since the hadronic flux is weak. We point out that the gluon condensation predicted by a nonlinear QCD evolution equation may greatly enhance the cross sections of proton-target interactions and give rise to a characteristic broken power law in the gamma-ray spectra. The result is used to explore the gluon condensation signature in the observed gamma-ray spectra from pulsars.

Warning: The mini gamma-ray-bursts in planning hadron colliders beyond the LHC energies

“…However the actual E π cannot reach such high limit because the restriction of acceleration mechanism. Works [5][6][7][8][9][10] use the GC-spectrum (3.4) to fit the VHE gamma-ray energy spectra. We summarize some of the GC-thresholds in table are possible [8].…”

“…The GC model gives it an intuitive physical explanation. In previous works [5][6][7][8][9][10] we have used this GC model to explain the VHE gamma-ray spectra originated from supernova remnants (SNRs), active galactic nuclei (AGN), pulsars and gamma-ray-bursts (GRBs). The knowledge accumulated in these works may help us to improve the prediction ability of the evolution equation.…”