News by Levels · Level 3 · Student worksheet

Astronomers Propose Off-Axis Jet for Puzzling Gamma-Ray Burst

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Read the story

GRB 260310A, detected by NASA’s Fermi telescope on March 10, produced an unremarkable initial gamma-ray flash followed by an exceptionally bright afterglow. The international team observed it in visible light, X-rays and radio waves.

Researchers propose that the jet was directed away from Earth’s line of sight. As it slowed, radiation became visible from a wider range of angles. A narrow energetic centre surrounded by a slower outer flow is one possible explanation for a later X-ray brightening.

Source: University of Rome Tor Vergata via Phys.org, 2026-10-29. https://phys.org/news/2026-10-modest-gamma-ray-dazzling-afterglow.html

Read and practise

1. Which kinds of light did the team use to observe the burst?

   1. Visible light, X-rays and radio waves
   2. Visible light and radio waves only
   3. X-rays and radio waves only

2. What is one proposed explanation for the later X-ray brightening?

   1. A narrow energetic centre inside a slower outer flow
   2. A jet with no faster central region
   3. A second unrelated X-ray source

Your turn

Explain the viewing-angle interpretation and identify one proposed feature of the jet.

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Read online: https://newsbylevels.com/news/gamma-ray-burst-side-view-bright-afterglow-october-2026/level-3/