Friday, April 19, 2024

Giant ‘Bubble’ in Space Discovered, Revealing Origin of Cosmic Rays

The discovery of a giant ultra-high-energy gamma-ray bubble structure in the Milky Way, along with the identification of a cosmic ray accelerator within it, marks a significant breakthrough in astrophysics. This finding, reported by the Institute of High Energy Physics of the Chinese Academy of Sciences (CAS), sheds light on the mysterious origin of cosmic rays with energies exceeding 10 Peta-Electronvolts (PeV).

The existence of such an immense structure hints at a complex and dynamic astrophysical phenomenon occurring within our galaxy. Scientists theorize that the cosmic ray accelerator nestled within this bubble-like structure continuously generates particles with energies surpassing 10 PeV. This suggests the presence of extreme conditions capable of propelling particles to such extraordinary energies.

The identification of a massive star cluster near the center of this cosmic ray accelerator, referred to as the “O-star association” and “B-star association,” provides valuable clues about the potential sources of these energetic particles. The intense radiation and energetic processes occurring within these star clusters could serve as the driving force behind the acceleration of cosmic rays to such high energies.

Moreover, the revelation of this super cosmic ray accelerator represents a crucial milestone in our quest to understand the origin and nature of cosmic rays in the Milky Way. By studying the interior of this structure and observing its interactions with surrounding celestial objects, scientists aim to unravel the mechanisms responsible for the production and acceleration of cosmic rays.

The ongoing efforts of the Large High Altitude Air Shower Observatory (LHAASO) are poised to further enhance our understanding of cosmic ray phenomena. With increased observation time and technological advancements, LHAASO is expected to detect additional super cosmic ray accelerators within our galaxy. These discoveries hold the promise of unlocking more profound insights into the cosmic ray spectrum and addressing longstanding questions about their origins and propagation mechanisms.

The discovery of the giant ultra-high-energy gamma-ray bubble structure and its associated cosmic ray accelerator represents a significant leap forward in our understanding of high-energy astrophysical processes and paves the way for future breakthroughs in the field of cosmic ray research.

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