Polarization Predictions in the GRB Prompt Phase with the Internal Shock Model

As the standard gamma-ray burst (GRB) prompt-emission model, internal shock (IS) model can reproduce fast-rise and slow-decay features of pulses in GRB light curve. The time- energy-dependent polarization deliver important physical information on emission region be used to test models. Polarization predictions for prompt phase with magnetized IS should investigated carefully. magnetic field is very likely mixed decays radius. synchrotron presence such a decaying recover Band-like spectrum phase. We investigate dependence both time energy framework model. Due large range parameters, it hard distinguish magnetic-reconnection through degree (PD) curves. PD could increase toward high-energy band while decreases zero above megaelectronvolt dissipative photosphere Therefore, we conclude that these two models emission. Finally, find that, independent observational band, profiles $\xi_B-PD$ curve time-integrated time-resolved PDs are similar, where $\xi_B$ strength ratio ordered component random component.