Published 23:37 IST, September 30th 2024

Where's the ‘New Star’? Astronomers Await Explosive Nova in Night Sky

A rare nova from star T Coronae Borealis is expected soon, offering a rare chance for astronomers and stargazers to witness the once-in-a-lifetime event

Reported by: Garvit Parashar
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In a rare cosmic event that has both astronomers and stargazers excited, a star 3,000 light-years away is expected to erupt into a spectacular nova. star in question, known as T Coronae Borealis (T Cor Bor), is located in Corona Borealis constellation. Once a vibrant star, T Cor Bor is now a white dwarf, a stellar remnant that has drawn attention due to its imminent explosion. Experts predict that when event occurs, it will be visible to naked eye and may even rival brightness of Polaris, North Star.

A Once-in-a-Lifetime Opportunity

This will be second time in almost a century that T Cor Bor explodes in a nova. Its last eruption occurred in 1946, and with a recurrence period of roughly 80 years, this is a once-in-a-lifetime opportunity to witness phenomenon.

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“We know it's going to go off — it's very obvious,” said Edward Sion, professor of astronomy and astrophysics at Villanova University. T Cor Bor belongs to an elite group of only ten recurrent novas discovered so far in Milky Way galaxy. Recurrent novas, unlike typical novas, erupt multiple times during ir lifespans, making m particularly interesting to scientists studying stellar evolution and life cycles of stars.

A conceptual image of how to find Hercules and “Norrn Crown” in night sky, created using planetarium software. Look up after sunset during summer months to find Hercules, n scan between Vega and Arcturus, where distinct pattern of Corona Borealis may be identified.NASA

Feeding on a Neighboring Red Giant

current activity of T Cor Bor is attributed to its interaction with a neighboring red giant star. As white dwarf feeds on material from red giant, it reaches a critical point where accumulated matter causes star to explode in a nova. Recently, astronomers observed a tell-tale dip in brightness of T Cor Bor, which mirrors pattern seen before its last eruption in 1946. This decrease in brightness suggests explosion could be imminent, and astronomers are eagerly monitoring star for furr signs.

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NASA's Role in Capturing Event

NASA and or space agencies have alrey devoted time to observing T Cor Bor using a variety of ground- and space-based telescopes. se observations are critical to better understanding processes involved in nova explosions. “We’ll observe nova event at its peak and through its decline, as visible energy of outburst fes,” said astrophysicist Hounsell, highlighting importance of capturing every phase of event.

NASA’s Fermi gamma-ray space telescope is among key instruments being used to monitor star. telescope is trained on T Cor Bor every day, tracking gamma rays emitted from stellar system. When explosion occurs, scientists expect to see a sharp rise in gamma rays, providing clues about temperature of material ejected and speed at which it leaves white dwarf. Studying se gamma-ray spikes and ir relation to brightness of star will offer valuable insights into how quickly explosion progresses and how shock waves spre through space.

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Citizen Scientists Play a Critical Role

Dr. Elizabeth Hays, chief of Astroparticle Physics Laboratory at NASA Goddard, emphasized importance of both professional and amateur astronomers in observing event. “Citizen scientists and space enthusiasts are always looking for those strong, bright signals that identify nova events and or phenomena,” Hays said. She ded that se contributions from amateur stargazers can help create a global network of observers, quickly alerting professional astronomy community when nova event occurs.

“Using social media and email, y’ll send out instant alerts, and flag goes up. We’re counting on that global community interaction again with T CrB,” Hays explained.

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A Chance to Unlock Nova Mysteries

For astrophysics researchers, impending nova of T Cor Bor presents a rare chance to deepen ir understanding of stellar explosions. Nova events are generally too distant and faint to study in detail, but T Cor Bor’s relative proximity offers a unique opportunity to investigate how stars devour surrounding material and later explode. data collected will help refine models of stellar behavior and provide new insights into lifecycle of stars.

As night sky prepares to welcome this dazzling display, scientists and stargazers alike await moment when T Cor Bor finally erupts, offering a breathtaking and scientifically valuable spectacle.

23:37 IST, September 30th 2024