Stay updated with breaking news from Circular service. Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.
In recent years, certain luminous extragalactic optical transients have been observed to last only a few days1. Their short observed duration implies a different powering mechanism from the most common luminous extragalactic transients (supernovae), whose timescale is weeks2. Some short-duration transients, most notably AT2018cow (ref. 3), show blue optical colours and bright radio and X-ray emission4. Several AT2018cow-like transients have shown hints of a long-lived embedded energy source5, such as X-ray variability6,7, prolonged ultraviolet emission8, a tentative X-ray quasiperiodic oscillation9,10 and large energies coupled to fast (but subrelativistic) radio-emitting ejecta11,12. Here we report observations of minutes-duration optical flares in the aftermath of an AT2018cow-like transient, AT2022tsd (the ‘Tasmanian Devil’). The flares occur over a period of months, are highly energetic and are probably nonthermal, implying that they arise from a near-relativistic ....
Aectual 3D prints circular pavilion for UAE at Floriade Expo 2022 3dprintingmedia.network - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from 3dprintingmedia.network Daily Mail and Mail on Sunday newspapers.
AMSTERDAM (PRWEB) November 04, 2021 Aectual, the worlds’ first platform to rapidly produce bespoke 3D-printed XL architectural and interior products at ....