摘要: In recent years, our understanding of gamma-ray bursts (GRB) prompt emission has been revolutionized, due to a combination new instruments, new analysis methods, and novel ideas. this review, I describe the most observational results current theoretical interpretation. Observationally, major development is the rise time resolved spectral analysis. These led (I) identification distinguished high energy component, with GeV photons often seen at delay (II) firm evidence for the existence photospheric (thermal) component in large number of bursts. triggered many theoretical efforts aimed at understanding physical conditions inner jet regions. I highlight some areas active theoretical research. include (I) role played by magnetic fields shaping dynamics GRB outflow spectra; (II) understanding microphysics kinetic magnetic energy transfer, namely, accelerating particle energies both shock waves reconnection layers; (III) how subphotospheric dissipation broadens “Planck” spectrum; and (IV) geometrical light aberration effects. I of these point towards gaps that still exist our knowledge as well promising directions future.
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