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Text Size: A+ Bengaluru: Once upon a time, billions of years ago, a star died. It let out a pulse of extremely high energy — a gamma ray burst (GRB), as the astronomers call it — that was detected on Earth just last year. Lasting less than a second, it was the shortest of its kind ever observed.  And it appears to have challenged some existing models that govern the way these bursts are seen.      Astronomers looking through NASA’s Fermi Gamma-ray Space Telescope observed a pulse of extremely high energy in the form of a GRB on 26 August 2020. The GRB, the astronomers say, is ...

Share Plasma bursts from a magnetar starquake in this artist’s conception, an eruption that can create a gamma ray flare. NASA’s Goddard Space Flight Center/Chris Smith/USRA/GESTAR Nature’s most magnetic objects, ripped apart in starquakes, can unleash powerful flashes of light Apr. 8, 2021 , 2:00 PM On 15 April 2020, a wave of gamma rays, nature’s most powerful kind of light, washed across the Solar System like a storm front. First contact came above Mars, where photons at energies comparable to the radiation from a nuclear bomb peppered a Russian particle detector on NASA’...

A research team led by Professor Soebur Razzaque from the University of Johannesburg predicted gamma-ray burst (GRB) behaviour. One such burst recently disrupted cell phone reception in South Africa. While Earth gets blasted by mild short GRBs regularly, the research team found that giant flare GRB 200415A came from another possible source. It erupted from a very rare, powerful neutron star called a magnetar, a star dying soon after the beginning of the Universe. Their findings were published in Gamma-ray bursts explained GRB explosions can disrupt mobile phone reception on Earth. Prof Razza...

Powerful cosmic eruptions traced to brilliant 'magnetar' in nearby galaxy Space 1/21/2021 Charles Q. Choi © Provided by Space The Interplanetary Network triangulated the location of a gamma-ray burst catalogued as "GRB 200415A" to the center of the nearby Sculptor galaxy, or NGC 253, located about 11.4 million light-years from Earth in the constellation Sculptor. Astronomers may have captured the first good look at giant flares from the strongest magnets in the universe. The likely cause of these giant flares? Starquakes trillions of trillions of times stronger than any e...

NASA Missions Unmask Magnetar Eruptions in Nearby Galaxies On April 15, 2020, a brief burst of high-energy light swept through the solar system, triggering instruments on several NASA and European spacecraft. Now, multiple international science teams conclude that the blast came from a supermagnetized stellar remnant known as a magnetar located in a neighboring galaxy. This finding confirms long-held suspicions that some gamma-ray bursts (GRBs) – cosmic eruptions detected in the sky almost daily – are in fact powerful flares from magnetars relatively close to home. “This has always been...