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.
An international team of astronomers reports the discovery of a new ultracompact binary of the AM CVn type exhibiting infrequent outbursts. The detection of the newfound system, designated TCP J07222683+6220548, was detailed ...
Across the cosmos, many stars can be found in pairs, gracefully circling one another. Yet one of the most dramatic pairings occurs between two orbiting black holes, formed after their massive progenitor stars exploded in ...
Astronomy
Jun 3, 2025
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Astronomers from the Yunnan University in China and other institutions have carried out photometric and spectroscopic observations of a recently detected supernova designated SN 2024aecx. Results of the observational campaign, ...
Merging neutron stars are excellent targets for multi-messenger astronomy. This modern and still very young method of astrophysics coordinates observations of the various signals from one and the same astrophysical source. ...
Astronomy
Jun 2, 2025
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218
Pulsars are rapidly rotating neutron stars that emit regular radio wave pulses and beams of magnetic radiation, which can sometimes be detected from Earth. These pulsating stars are dense remnants of massive stars whose life ...
Technology readiness levels (or TRL levels, because repeating the last word of initialisms is common in English) is a metric commonly used by NASA to define how developed a technology for use on a mission is. These typically ...
Space Exploration
May 16, 2025
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An international team of astronomers reports the discovery of a new supernova remnant that showcases a remarkable circular symmetry in shape. The detection of the remnant, dubbed "Teleios," is described in a research paper ...
For the first time, astronomers have probed the physical environment of repeating X-ray outbursts near monster black holes thanks to data from NASA's NICER (Neutron star Interior Composition Explorer) and other missions.
Astronomy
May 6, 2025
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89
Using NASA's James Webb Space Telescope, astronomers uncovered a mysterious feature within the remnant, nicknamed the "Green Monster," alongside a puzzling network of ejecta filaments forming a web of oxygen-rich material. ...
Astronomy
May 1, 2025
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106
Using the Neutron star Interior Composition Explorer (NICER) onboard the International Space Station (ISS), astronomers have observed IGR J12580+0134, which is the closest tidal disruption event. Results of the observational ...
