Gamma-ray astronomy is a research area focused on the observation, analysis, and interpretation of the universe in the gamma-ray portion of the electromagnetic spectrum, typically above ~100 keV. It investigates high-energy astrophysical processes such as particle acceleration, non-thermal radiation mechanisms, and nuclear transitions in environments including supernova remnants, pulsars, active galactic nuclei, gamma-ray bursts, and the Galactic Center. The field relies on space-based telescopes and ground-based air-shower or Cherenkov detectors, using techniques such as spectral analysis, timing studies, and imaging to constrain models of cosmic-ray production, magnetohydrodynamic processes, relativistic jets, and potential signatures of dark matter annihilation or decay.
Using NASA's Fermi space telescope, Italian astronomers have observed a radio source known as 3C 216. As a result, they detected increased gamma-ray activity from this source, including a strong outburst. The finding is reported ...
The long-awaited detection of gravitational waves has opened up a whole new world of astronomy. One of the key efforts is now to tie signals across multiple domains—for example, a gravitational wave and the associated electromagnetic ...
Astronomy
Jan 8, 2025
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Five telescopes of the H.E.S.S.-collaboration in Namibia are used to study cosmic radiation, especially gamma radiation. With data from 10 years of observations, researchers have now been able to detect cosmic electrons and ...
Astronomy
Nov 25, 2024
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An international team of researchers has uncovered evidence that astrophysics models of massive stars and supernovae are inconsistent with observational gamma-ray astronomy.
General Physics
Nov 13, 2024
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Recent findings from the International Space Station address wound healing, fine motor control in space, and radiation resistance by the station's Glowbug gamma-ray telescope.
Space Exploration
Nov 5, 2024
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At the High-Altitude Water Cherenkov (HAWC) observatory, 13,000 feet above sea level on the Sierra Negra volcano of Mexico, researchers are getting a look into a violent mystery in the Milky Way galaxy. An international research ...
Astronomy
Oct 22, 2024
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Modern astronomy has clung to the belief that the relativistic outflows or jets, responsible for the existence of electromagnetic radiation of particularly high energies, are located in the nuclei of active galaxies distant ...
Astronomy
Oct 17, 2024
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Using the Large High-Altitude Air Shower Observatory (LHAASO), an international team of astronomers have detected very-high-energy (VHE) gamma-rays around the pulsar PSR J0248+6021, which may be the pulsar's halo or a pulsar ...
By analyzing the data from NASA's Fermi Gamma-ray Space Telescope, Russian astronomers have detected anti-glitches in a gamma-ray pulsar designated PSR J1522-5735. The discovery, published September 28 on the pre-print server ...
Einstein's theory of relativity is based on two assumptions, or postulates. The first is that the laws of physics look the same to everyone traveling in a straight line with no acceleration.
