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20 de nov. de 2019 · Gamma-ray bursts (GRBs) are brief flashes of γ-rays and are considered to be the most energetic explosive phenomena in the Universe 1. The emission from GRBs comprises a short (typically tens of...
If no afterglow is detected at optical wavelengths, the GRB is known as a dark burst, but recent evidence suggests that even these have rapidly fading afterglow emission – you just have to be very quick to see it!
The discovery of counterparts in X-ray and optical to radio wavelengths has revolutionized the study of γ-ray bursts, until recently the most enigmatic of astrophysical phenomena.
10 de abr. de 2023 · Rare early optical observations that captured the prompt-to-afterglow emission of GRB 201223A demonstrate that it behaved according to the fireball model of gamma-ray bursts.
4 de jun. de 2021 · An intrinsic gamma-ray burst afterglow. Long gamma-ray bursts (GRBs) are emitted by relativistic jets generated during the collapse of a massive star in a distant galaxy. The GRB itself lasts only a few seconds but is followed by an afterglow that can persist for hours or days.
26 de jul. de 2021 · Both PTF and ZTF also have discovered afterglow-like transients with optical, X-ray and radio emission, but with no gamma-ray counterpart 72,73,74. Gamma-ray detections
5 de may. de 2022 · Afterglow radiation in gamma-ray bursts (GRB), extending from the radio band to GeV energies, is produced as a result of the interaction between the relativistic jet and the ambient medium.
