A dazzling burst of gamma rays, dubbed BOAT (Brightest of All Time), captured the attention of astronomers worldwide in October 2022, marking a monumental celestial event. Now, a groundbreaking study led by researchers at Northwestern University, published in Nature Astronomy, sheds light on the origins of this unprecedented phenomenon while unraveling a perplexing cosmic puzzle.
Using NASA's JWST orbiting observatory, scientists have traced the source of the gamma ray burst (GRB) to a collapsar, a massive, rapidly rotating star collapsing into a black hole. This discovery aligns with theoretical predictions suggesting collapsars as potent creators of heavy elements like uranium, platinum, and gold. However, despite BOAT's exceptional brightness, researchers were surprised to find no evidence of these elements.
The absence of heavy elements challenges conventional understanding, as collapsars were believed to be prime environments for element forging. Peter Blanchard, leading the study, highlights the unexpected nature of GRB 221009A, residing in a galaxy with a deficiency in heavy elements, further complicating the mystery.
While recent studies have encountered similar null results, Chiaki Kobayashi of the University of Hertfordshire emphasizes the need for more supernova observations to validate findings. Despite the current uncertainties, astronomers remain optimistic, underscoring the rarity of supernovae capable of producing the elusive r-process.
As the scientific community delves deeper into cosmic phenomena, the quest to unlock the mysteries of the universe continues, with each discovery bringing new revelations and challenges to our understanding of the cosmos.
More: https://www.science.org/content/article/brightest-gamma-ray-burst-all-time-emerged-collapsing-star
