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Emission Spectra02:39

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Related Experiment Video

Updated: May 11, 2026

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
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Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Published on: December 27, 2018

High-energy emission from transients.

J A Hinton1, R L C Starling

  • 1Department Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH, UK. jah85@le.ac.uk

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|May 1, 2013
PubMed
Summary
This summary is machine-generated.

Cosmic explosions, like supernova remnants and gamma-ray bursts, accelerate particles to high energies. Studying these energetic cosmic events with advanced telescopes probes fundamental physics.

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Last Updated: May 11, 2026

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Area of Science:

  • High-energy astrophysics and particle acceleration.
  • Cosmic ray origins and astrophysical transients.

Background:

  • Cosmic explosions generate shock waves and accelerate particles across diverse timescales.
  • Supernova remnants are traditional sources of Galactic cosmic rays.
  • Time-variable emission from various systems indicates rapid particle acceleration.

Purpose of the Study:

  • To explore the motivations for high-energy observations of astrophysical transients.
  • To review the current experimental landscape in high-energy astrophysics.
  • To discuss future prospects, focusing on the Cherenkov Telescope Array.

Main Methods:

  • Analysis of time-variable emission from astrophysical systems.
  • Inference of bulk Lorentz factors and high-energy photon production.
  • Observational astronomy utilizing gamma-ray and neutrino detectors.

Main Results:

  • Gamma-ray bursts exhibit short timescales and high Lorentz factors (~1000).
  • Active galaxies, pulsar wind nebulae, and colliding stellar winds show time-variable emission at TeV energies.
  • High-energy photons and neutrinos serve as probes of cosmic explosion mechanisms.

Conclusions:

  • High-energy observations of cosmic transients are crucial for understanding particle acceleration.
  • These observations provide tools for exploring fundamental physics.
  • Next-generation observatories like the Cherenkov Telescope Array are key for future discoveries.