English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A shock that form below the photosphere of a GRB outflow is mediated byCompton scattering of radiation advected into the shock by the upstream fluid.The characteristic scale of such a shock, a few Thomson depths, is larger thanany kinetic scale involved by several orders of magnitudes, hence, unlikecollisionless shocks, radiation mediated shocks cannot accelerate particles tonon-thermal energies. The spectrum emitted by a shock that emerges from thephotosphere of a GRB jet, reflects the temperature profile downstream of theshock, with a possible contribution at the highest energies from the shocktransition layer itself. We study the properties of radiation mediated shocksthat form during the prompt phase of GRBs, and compute the time integratedspectrum emitted by the shocked fluid following shock breakout. We show thatthe time integrated emission from a single shock exhibits a prominent thermalpeak, with the location of the peak depending on the shock velocity profile. Wealso point out that multiple shock emission can produce a spectrum that mimicsa Band spectrum.

Observational signatures of sub-photospheric radiation mediated shocks in the prompt phase of GRBs