Transient and explosive astronomical phenomena constitute a research area focused on short-lived, high-energy events in the universe, such as supernovae, gamma-ray bursts, tidal disruption events, kilonovae, and fast radio bursts. This field investigates the underlying physical mechanisms driving rapid energy release, including relativistic jets, shock breakout, nucleosynthesis, compact object mergers, and accretion-induced instabilities. Research integrates multiwavelength and multimessenger observations (electromagnetic spectra, gravitational waves, neutrinos) with numerical simulations and theoretical modeling to constrain progenitor systems, energy budgets, radiative transfer processes, and environmental impact, including feedback on galactic evolution and the production of heavy elements.
A team of astronomers including George Washington University physics Ph.D. student Eliza Neights recorded an extraordinary cosmic outburst this July which likely heralds a new kind of stellar explosion. With a flood of data ...
Astronomy
Dec 10, 2025
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A Rutgers astrophysicist is helping to solve a cosmic puzzle that has astronomers scratching their heads. The mystery centers on a powerful explosion in space that lasted far longer than anything they have seen before.
Astronomy
Dec 9, 2025
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An international team of astronomers, led by SRON, has observed a sudden outburst of matter near the supermassive black hole NGC 3783 at speeds reaching up to 20% of the speed of light. During a 10-day observation, mainly ...
Astronomy
Dec 9, 2025
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277
Astronomers from the University of California (UC), Berkeley and elsewhere have performed spectroscopic and photometric study of a peculiar supernova designated SN 2021ukt, which underwent a transition from Type IIn to Type ...
Astronomers have captured images of two stellar explosions—known as novae—within days of their eruption and in unprecedented detail. The breakthrough provides direct evidence that these explosions are more complex than previously ...
Astronomy
Dec 5, 2025
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What can an ancient supernova teach scientists about Earth and celestial objects? This is what a study recently published in Astronomy & Astrophysics hopes to address as a team of scientists investigated the interaction of ...
Astronomy
Dec 1, 2025
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Using the Tianma Radio Telescope (TMRT), researchers from the Shanghai Astronomical Observatory (SHAO) of the Chinese Academy of Sciences conducted 66 simultaneous dual‑frequency (2.25 GHz/8.60 GHz) observations of the fast ...
Astronomy
Nov 20, 2025
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An international team of astronomers has performed photometric and spectroscopic observations of a distant Type Ibn supernova known as SN 2024acyl. Results of the observational campaign, published November 6 on the arXiv ...
Swift observations with the European Southern Observatory's Very Large Telescope (ESO's VLT) have revealed the explosive death of a star just as the blast was breaking through the star's surface. For the first time, astronomers ...
Astronomy
Nov 12, 2025
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104
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 ...
