Electromagnetic Bursts from Mergers of Oscillons in Axion-like Fields

Understand

We investigate the bursts of electromagnetic and scalar radiation resulting from the collision, and merger of oscillons made from axion-like particles using 3+1 dimensional lattice simulations of the coupled axion-gauge field system.

• The radiation into photons is suppressed before the merger.
• However, it becomes the dominant source of energy loss after the merger if a resonance condition is satisfied.
• Conversely, the radiation in scalar waves is dominant during initial merger phase but suppressed after the merger.