arXiv subjects

J. H. Ruan

Publications and source records attributed to J. H. Ruan.

2 recordsLinked to original sources

arXiv2021

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

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.

astro-ph.HE↗

arXiv2020

The gluon condensation effect in the cosmic hadron spectra

Hardening of cosmic proton- and nuclei-spectra is explained by using the gluon condensation (GC) model, which states that a large amount of gluons in proton may condense near the high energy threshold. The results present the GC-effect as common origin of a series of anomalous astrophysical phenomena including the broken power-law in gamma-ray spectra, the excess in positron- and electron-spectra and hardening of proton- and nuclei-spectra.

astro-ph.HE↗