Astronomers Captured a Brilliant Afterglow of Violet Star Merger
Astronomers surprised by releasing a mysterious video on Wednesday. This video showed a footage of ever-evolving lime green spots on dark background. Along with this, the second spot is visible which is the brightest neon bulb.
What you're seeing is proof that about 20 billion years ago an ultra powerful neutron star collided with a dim star, spitting out an explosive, short-lived gamma ray burst, rippling gravitational waves across the universe and diffusing surrounding space with a potent afterglow.
It was a shattering merger that occurred when the universe was just 40% old of its current age, and our remarkable view of this incident is courtesy of the world's largest radio telescope, the Atacama Large Millimeter/Submillimeter Array (ALMA) situated in Chile.
ALMA is a combination of 66 radio telescopes that are spread across the Chilean Andes and work together to gather information about the universe.
ALMA program chief Wen Fi Fong said in a statement "The afterglow for soft bursts is very difficult to come by, so it was truly amazing to see this cosmic event shine so brightly." This discovery directs for new studies to explore the universe.
Details of Fong and fellow researchers' findings are soon to be published in an upcoming issue of The Astrophysical Journal Letters. For now, a preprint is available to view on arXiv.
An incomprehensible force
Short-lived gamma ray bursts, also commonly known as GRB21106A, are the most intense bursts. Until the year 2005, they remained mysterious due to their fleeting nature, but NASA collected information about them for the first time.
These cosmic waves can emit so much energy in a few seconds that the Sun cannot even in its entire lifetime. Such waves are produced by binary star collisions, one of which involves a neutron star. The weight of just one teaspoon of a neutron star would be equivalent to the weight of Mount Everest or more.
According to the study's lead author and astronomer Tanmay Laskar at Radboud University, these mergers are caused by gravitational wave radiation that removes energy from the orbits of binary stars. This causes the stars to move towards each other and merge.
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