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Minutes-duration optical flares with supernova luminosities

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 ....

South Korea , United States , United Kingdom , Ch Ungch Ong Bukto , Ugarte Postigo , Rivera Sandoval , International Astronomical Union , Astrophysics Source Code Library , Gildas Team , Ms High Energy Astrophysics Cambridge Univ , Thai National Telescope , Zwicky Transient Facility Bright , Spectroscopic Survey Of Transient Objects , Sloan Digital Sky , Astronomical Society Of The Pacific , Astronomical Data Analysis Software , Galactic Center , Large Array Survey Telescope , Dark Energy , Line Data Analysis Software , Discovery Report , Name Server Discovery Report , Automatic Learning , Rapid Classification , Name Server Astronote , Black Hole ,

Galaxy Mysteriously Directs Powerful Radiation Toward Earth

By Dean Murray A galaxy has mysteriously redirected a powerful jet of radiation at Earth. Research has revealed that galaxy, named PBC J2333.9-2343, has changed the direction of the jet “drastically by an angle of up to 90 degrees”. A study by a team of international astronomers explains the jet is observed “going from being ....

X Region , Nordrhein Westfalen , Neil Gehrels , Lorena Hern , Millennium Institute Of Astrophysics , Max Planck Institute For Radio Astronomy , Yale University , Royal Astronomical Society , Monthly Notices Of The Royal Astronomical Society , Millennium Institute , Radio Telescope Effelsberg , Max Planck Institute , Radio Astronomy , Penn State Neil Gehrels Swift , Automatic Learning , Rapid Classification , Zwicky Transient Facility , Asteroid Terrestrial Impact Last Alert System , Monthly Notices , Royal Astronomical ,

Galaxy mysteriously directs powerful radiation toward Earth

The event marks the first observation of a reorientation so dramatic that it changes the category a galaxy fits into. ....

X Region , Nordrhein Westfalen , Lorena Hern , Neil Gehrels , Royal Astronomical Society , Millennium Institute Of Astrophysics , Yale University , Monthly Notices Of The Royal Astronomical Society , Max Planck Institute For Radio Astronomy , Dean Murray , Millennium Institute , Radio Telescope Effelsberg , Max Planck Institute , Radio Astronomy , Penn State Neil Gehrels Swift , Automatic Learning , Rapid Classification , Zwicky Transient Facility , Asteroid Terrestrial Impact Last Alert System , Monthly Notices , Royal Astronomical , Sean Murray ,

Galaxy mysteriously directs powerful radiation toward Earth

Galaxy mysteriously directs powerful radiation toward Earth
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Nordrhein Westfalen , X Region , Neil Gehrels , Lorena Hern , Yale University , Millennium Institute Of Astrophysics , Royal Astronomical Society , Max Planck Institute For Radio Astronomy , Monthly Notices Of The Royal Astronomical Society , Dean Murray , Millennium Institute , Radio Telescope Effelsberg , Max Planck Institute , Radio Astronomy , Penn State Neil Gehrels Swift , Automatic Learning , Rapid Classification , Zwicky Transient Facility , Asteroid Terrestrial Impact Last Alert System , Monthly Notices , Royal Astronomical ,

Galaxy mysteriously directs powerful radiation toward Earth

Galaxy mysteriously directs powerful radiation toward Earth
djournal.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from djournal.com Daily Mail and Mail on Sunday newspapers.

Nordrhein Westfalen , X Region , Lorena Hern , Neil Gehrels , Yale University , Max Planck Institute For Radio Astronomy , Millennium Institute Of Astrophysics , Monthly Notices Of The Royal Astronomical Society , Royal Astronomical Society , Dean Murray , Millennium Institute , Radio Telescope Effelsberg , Max Planck Institute , Radio Astronomy , Penn State Neil Gehrels Swift , Automatic Learning , Rapid Classification , Zwicky Transient Facility , Asteroid Terrestrial Impact Last Alert System , Monthly Notices , Royal Astronomical ,