New discoveries about the mystery of the blue explosion in the universe.

New research explains the origin of the mysterious blue light bursts in the universe, linking them to collisions between massive stars and Wolf-Rayet stars.

In 2018, scientists recorded a new type of cosmic explosion called a "Fast, Bright, Blue Transient Optical Event" (LFBOT). Since then, 14 similar events have been recorded. However, the origin of these explosions has puzzled astronomers for a long time.

Recently, a research team led by Dr. Anya Nugent from the Center for Astrophysics (CfA) at Harvard University (USA) announced that they may have found the source of the mysterious, brilliant blue light bursts.

Scientists have been trying to understand the origin of LFBOTs for quite some time, even proposing many models to explain the existence of these explosions.

The explosions, which emitted a brilliant blue light, have become a great mystery. Photo: Earth.com.

Interest likely stems from the fact that LFBOTs develop significantly faster than other cosmic explosions, with their light peaking and fading in just a few days. Furthermore, LFBOTs are distinguished by a mesmerizing blue color throughout their existence, suggesting they are at extremely high temperatures.

Other hypotheses about the potential origin of LFBOT put forward by experts include the death of giant stars in supernovae that collapse the core, and extreme black hole tearing apart of stars.

Newly published research suggests that LFBOTs emerge from environments very different from those created by the aforementioned events. A new model developed by Dr. Nugent's team indicates that they are most likely the result of a catastrophic collision between a "zombie" and a Wolf-Rayet star.

Wolf-Rayet stars are a short but extremely intense evolutionary phase of very massive stars, occurring just before the star explodes. In this scenario, the blue explosion occurs primarily in galaxies with more formed, smaller stars.

The two colliding objects were two massive stars, one of which sucked matter from the other, turning the "prey" into a Wolf-Rayet star. After some time, the Wolf-Rayet star caused the predator star to "bulge," exploding in a supernova that collapsed its core, becoming a black hole or neutron star. Finally, this "zombie" – the neutron star or black hole – swallowed the Wolf-Rayet star and created LFBOT as we have observed.

Source: https://khoahocdoisong.vn/kham-pha-moi-ve-bi-an-vu-no-xanh-lam-trong-vu-tru-post2149100326.html