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Researchers Pinpoint Origin of Photons in Gamma-Ray Bursts

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WAKO, Japan, April 5, 2019 — Scientists from the RIKEN Cluster for Pioneering Research and their collaborators have shown that the photons emitted by long gamma-ray bursts (GRBs) originate in the photosphere, that is, in the visible portion of the relativistic jet that is emitted by exploding stars. Using computer simulations performed on supercomputers, the group focused on the so-called photospheric emission model, a leading model for the emission mechanism of GRBs. This model postulates that the photons visible on Earth are emitted from the photosphere of the relativistic jet. As the jet expands, it becomes...Read full article

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    Published: April 2019
    Glossary
    astronomy
    The scientific observation of celestial radiation that has reached the vicinity of Earth, and the interpretation of these observations to determine the characteristics of the extraterrestrial bodies and phenomena that have emitted the radiation.
    gamma ray
    The spontaneous emittance of electromagnetic radiation by the nucleus of certain radioactive elements during their quantum transition between two energy levels. The radiation emitted has a wavelength between 10-8 and 10-10 cm.
    Research & TechnologyAsia-PacificphotonsastronomyastrophysicsLight Sourcesgamma raylong gamma rayYonetoku relationRIKEN Cluster for Pioneering Researcheducation

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