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.
The Search for Extraterrestrial Intelligence (SETI) has a data scale problem. There are just too many places to look for an interstellar signal, and even if you're looking in the right place you could be looking at the wrong ...
Astronomy
Oct 1, 2025
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Gamma-ray bursts (GRBs) are the brightest explosions in the universe. In just a few seconds, they can outshine all the stars in their host galaxy combined, releasing more energy than our sun will emit over its entire lifetime. ...
A team of astronomers have observed an explosion in the universe unlike any ever witnessed before. The gamma-ray bursts from outside the Milky Way galaxy repeated several times over the course of a day. Gamma-ray bursts (GRBs) ...
Astronomy
Sep 9, 2025
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Using the Hubble Space Telescope (HST), Italian astronomers have observed five blue straggler stars in the globular cluster 47 Tucanae. Their results show that one of these stars has a white dwarf companion. The discovery ...
A stunning new image of a cosmic jet has helped astronomers unlock the mystery behind the unusually bright emission of high-energy gamma rays and neutrinos from a peculiar celestial object. The source is a blazar—a type ...
Astronomy
Aug 12, 2025
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An international team of astronomers has performed multiwavelength observations of a gamma-ray binary system known as HESS J0632+057. Results of the observational campaign, presented July 31 on the pre-print server arXiv, ...
Chinese astronomers have used NASA's Fermi gamma-ray space telescope to conduct a long-term study of a bright gamma-ray pulsar known as PSR J0007+7303. In their results, they identified more glitching events in this pulsar. ...
The international CTAO LST Collaboration has released remarkable findings from observations of GRB 221009A—the brightest gamma-ray burst (GRB) ever recorded.
Astronomy
Jul 23, 2025
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An international team of astronomers reports the detection of four new gamma-ray millisecond pulsars using the Murriyang radio telescope at the Parkes Observatory in Australia. The discovery was detailed in a research paper ...
The U.S. Naval Research Laboratory (NRL), in partnership with NASA's Marshall Space Flight Center (MSFC), has developed StarBurst, a small satellite (SmallSat) instrument for NASA's StarBurst Multimessenger Pioneer mission, ...
Astronomy
Mar 13, 2025
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