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American Focus > Blog > Tech and Science > Betelgeuse’s Mysterious Dimming May Have a Simple Explanation : ScienceAlert
Tech and Science

Betelgeuse’s Mysterious Dimming May Have a Simple Explanation : ScienceAlert

Last updated: August 31, 2024 10:21 pm
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Betelgeuse’s Mysterious Dimming May Have a Simple Explanation : ScienceAlert
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The Mystery of Betelgeuse: A Closer Look at the Red Supergiant

Betelgeuse, also known as Beetle-juice, has captivated amateur astronomers for years with its unexpected dimming episodes. This red supergiant variable star, located in the constellation Orion, has recently garnered even more attention due to its peculiar behavior.

One of the fascinating aspects of Betelgeuse is its variability, with cycles that span over different periods of time. A recent study suggests that a companion star with 1.17 solar masses could be responsible for these variations, with an orbit roughly 2.43 times the radius of Betelgeuse potentially causing fluctuations in dust that affect its brightness.

Standing out as one of the brightest stars in the night sky, Betelgeuse shines prominently in the upper left of Orion, symbolizing the shoulder of the celestial hunter. With a radius approximately 1,000 times that of the Sun and a distance of 642 light years from Earth, Betelgeuse emits about 100,000 times more light than our own star.

In recent years, Betelgeuse has experienced unexpected dimming events, notably in late 2019 and early 2020, known as ‘The Great Dimming.’ This phenomenon has sparked curiosity among astronomers and stargazers alike.

One of the intriguing features of Betelgeuse is its Long Secondary Period (LSP) of approximately 2100 days, a cycle that adds another layer of complexity to its variability. While the exact cause of this extended period remains unknown, it has raised questions about the star’s evolutionary stage and potential fate.

A recent study by Jared A. Goldberg and his team delves into the mechanisms behind Betelgeuse’s long-term variability, offering insights into its pulsation patterns and evolutionary trajectory. The findings suggest that Betelgeuse may be larger than previously thought, hinting at a possible supernova explosion in the coming centuries.

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Interestingly, the study proposes that a low mass companion star, Ori B, could be influencing Betelgeuse’s variability by modulating the surrounding dust. If confirmed, this binary system could revolutionize our understanding of Betelgeuse’s behavior and evolution.

While Betelgeuse is expected to go supernova in the future, the discovery of Ori B as a potential cause of its variability may indicate a longer timeline before this spectacular event occurs.

As we unravel the mysteries of Betelgeuse and its enigmatic behavior, we gain valuable insights into the life cycle of massive stars and the intricate dynamics of binary systems in the cosmos.

This article was originally published by Universe Today. Read the original article.

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