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.
Sarah Dalessi, a fifth-year student in the College of Science at The University of Alabama in Huntsville (UAH), a part of The University of Alabama System, is the lead author of a paper published in The Astrophysical Journal ...
Astronomy
Dec 9, 2025
0
171
Astronomers at the University of North Carolina at Chapel Hill have helped uncover new clues about the longest-lasting cosmic explosion ever observed, a gamma-ray burst that lasted nearly seven hours. The event, known as ...
Astronomy
Dec 8, 2025
0
116
Using NASA's Swift and Fermi space telescopes, Indian astronomers have conducted a long-term multiwavelength study of a nearby blazar designated TXS 0518+211. Results of the study, published Nov. 26 on the arXiv pre-print ...
A new study led by the Yunnan Observatories of the Chinese Academy of Sciences has detected quasi-periodic oscillation (QPO) signals in an unusual gamma-ray burst (GRB) event. The findings are published in The Astrophysical ...
Astronomy
Nov 28, 2025
0
27
Astronomers have performed very long baseline interferometry (VLBI) observations of a gamma-ray loud blazar known as TXS 2013+370. The observations, posted November 19 on the arXiv preprint server, resulted in the detection ...
Astronomers have conducted multiwavelength observations of a recently detected fast X-ray transient designated EP241107a. Results of the observational campaign, published November 4 on the arXiv preprint server, shed more ...
Using NASA's Fermi gamma-ray space telescope, astronomers from Shanghai Normal University in China and elsewhere have investigated a distant blazar known as 4FGL J0309.9-6058. As a result, they identified quasi-periodic oscillation ...
New research conducted by an international team of physicists has found that high-energy gamma rays might offer the key to unlocking the mysteries of the sun's magnetic fields.
Astronomy
Oct 29, 2025
0
20
On July 2, 2025, NASA's Fermi Gamma-ray Burst Monitor (Fermi-GBM) captured around three hours' worth of signals that appeared to come from the same source. When scientists compiled this data with signals picked up by multiple ...
Using the Very Energetic Radiation Imaging Telescope Array System (VERITAS), German astronomers have observed a unique microquasar known as SS 433. Results of the observational campaign, published Sept. 25 on the arXiv pre-print ...
