Betelgeuse's Atmosphere Altered by Companion Star Sivarhu Following Its Recovery from Dimming

Betelgeuse Recovers from Mysterious Dimming Event

According to Radiotrek — Світ: After experiencing a significant dimming at the end of 2019, the red supergiant Betelgeuse has regained its brightness. However, astronomers have detected notable changes in its atmosphere, attributed to the influence of its smaller companion star, Sivarhu. Located about 724 light-years away from Earth, Betelgeuse boasts a radius roughly 1400 times that of the Sun and shines with over 100,000 times the Sun's luminosity.

Unusual Atmospheric Changes Linked to Sivarhu

The dramatic dimming was caused by a massive ejection of material from Betelgeuse's surface. Observations conducted between 2021 and 2026 reveal that the star’s outer atmosphere temperature has stabilized around 3500 kelvins. Despite this recovery, astronomers have observed that Betelgeuse’s atmospheric shape has been altered by the presence of Sivarhu, which moves within the star’s extended gaseous envelope.

The star’s shape varies depending on Sivarhu’s position:

• At certain distances, Betelgeuse appears more elongated.
• The companion leaves an imprint on the gaseous shell, impacting Betelgeuse’s stellar wind.

These findings shed light on the complex interactions between stars and their companions, highlighting how gravitational forces can reshape stellar atmospheres. Betelgeuse’s post-dimming behavior offers valuable insights into stellar evolution, particularly how mass ejections affect a star’s properties. The ongoing influence of Sivarhu demonstrates the dynamic nature of such systems, emphasizing the importance of continuous monitoring of luminous stars like Betelgeuse to deepen our understanding of the cosmos.

As Betelgeuse continues to recover from its dimming event, the influence of its companion star Sivarhu becomes increasingly apparent. The alterations in Betelgeuse's atmosphere, particularly its changing shape, highlight the intricate dynamics at play in binary star systems. For a deeper understanding of how Sivarhu's passage impacts the red supergiant's form, read more about the changes in Betelgeuse's shape.