Time domain astronomy is a research area focused on observing and characterizing astronomical phenomena as a function of time, emphasizing variability, transients, and dynamic processes across the electromagnetic spectrum and, increasingly, in multi-messenger channels (gravitational waves, neutrinos). It leverages high-cadence surveys, wide-field imaging, and rapid follow-up to study events such as supernovae, tidal disruption events, variable stars, active galactic nuclei, kilonovae, and fast radio bursts. Methodologically, it depends on time-series analysis, real-time alert systems, and automated classification pipelines, integrating large-scale data processing and statistical inference to constrain physical models of transient astrophysical sources and their environments.
Astronomers from Curtin University in Australia and elsewhere have performed radio observations of a tidal disruption event known as AT2019azh. Results of the new study, published September 22 on the arXiv preprint server, ...
The universe is a slow-changing place. While it's mostly true that the heavens and the deep-sky objects in it will look largely the same across an average human lifetime, there are dramatic examples that defy this trend.
Astronomy
Sep 21, 2025
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Astronomers have performed radio observations of WTP 14adeqka—a tidal disruption event discovered a decade ago. Results of the observational campaign, published August 22 on the pre-print server arXiv, provide crucial insights ...
Supernovae appear to our eyes—and to astronomical instruments—as brilliant flashes that flare up in the sky without warning, in places where nothing was visible just moments before. The flash is caused by the colossal explosion ...
Astronomy
Aug 19, 2025
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For thousands of years, humanity viewed the skies as unchanging, except for a few "wandering stars" (that we now know are planets). As we improved our ability to perceive the cosmos with light-gathering telescopes and electronic ...
Astronomy
Aug 13, 2025
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Using various telescopes worldwide, an international team of astronomers has observed a tidal disruption event (TDE) known as AT2018hyz, which allowed them to witness a rapid brightening of this source in the radio band.
Astronomers from the University of Turku in Finland and elsewhere have performed a broadband spectral and timing study of an X-ray binary designated XTE J0111.2−7317, which resulted in the detection of quasi-periodic oscillations ...
Using the Hard X-ray Modulation Telescope (HXMT), Chinese astronomers have observed an X-ray binary system designated IGR J19294+1816. As a result, they discovered multiple X-ray quasi-periodic oscillations in this source. ...
Astronomers from the Aryabhatta Research Institute of Observational Sciences (ARIES) in India and elsewhere have employed the Devasthal Fast Optical Telescope (DFOT) to conduct long-term photometric observations of an open ...
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 ...
