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 new article published in Universe describes an approach that looks back from the deaths of stars to their births, allowing the so-called initial mass function (IMF), i.e. the way in which star masses are distributed after ...
Astronomy
Dec 18, 2024
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There is no question that the sun is a temperamental star, as this year's unusually strong solar storms show. Some of them led to remarkable auroras even at low latitudes. But can our star become even more furious?
Astronomy
Dec 12, 2024
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Stars are born, live and die in spectacular ways, with their deaths marked by one of the biggest known explosions in the universe. Like a campfire needs wood to keep burning, a star relies on nuclear fusion—primarily using ...
Astronomy
Dec 12, 2024
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An international scientific team, led by a researcher from the Institute of Space Studies of Catalonia (IEEC) and the Institute of Space Sciences (ICE-CSIC), has managed to detect an exceptionally fast and bright cosmic burst ...
Astronomy
Dec 12, 2024
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Since 2018 the Zwicky Transient Facility, an international astronomical collaboration based at the Palomar Observatory in California, has scanned the entire sky every two to three nights. As part of this mission, the ZTF's ...
Astronomy
Dec 9, 2024
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Using the DAocheng Radio Telescope (DART), Chinese astronomers have detected a long-period transient event. The newfound transient, which received designation DART J1832-0911, has a period of approximately 44 minutes and ...
Slowly repeating bursts of intense radio waves from space have puzzled astronomers since they were discovered in 2022.
Astronomy
Dec 2, 2024
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Researchers from the Curtin node of the International Center for Radio Astronomy Research (ICRAR) have made a record-breaking astrophysical discovery while simultaneously uncovering a possible explanation for the rare and ...
Astronomy
Nov 26, 2024
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An international team of researchers has made new observations of an unusual supernova, finding the most metal-poor stellar explosion ever observed.
Astronomy
Nov 25, 2024
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Every now and then, astronomers will detect an odd kind of radio signal. So powerful it can outshine a galaxy, but lasting only milliseconds. They are known as fast radio bursts (FRBs). When they were first discovered a couple ...
Astronomy
Nov 21, 2024
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