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All articles tagged with #km3net

Blazar Jets as Cosmic Neutrino Engines? New Record Points to Extreme Galaxies
science28 days ago

Blazar Jets as Cosmic Neutrino Engines? New Record Points to Extreme Galaxies

A Mediterranean KM3NeT/ARCA detector captured a 220 PeV neutrino—the most energetic yet—sparking a study that points to blazars (jets from supermassive black holes aligned toward Earth) as likely accelerators. The team cross-checked with IceCube and Fermi data and noted no electromagnetic counterpart, suggesting a diffuse background of multiple sources rather than a single cataclysmic event. With KM3NeT expanding to full size, researchers expect more high-energy neutrinos to sharpen the origin story.

via ScienceAlert|
#astrophysics#blazars#km3net
Dark-Charge Black Holes May Explain Ultra-High-Energy Neutrino Burst
space2 months ago

Dark-Charge Black Holes May Explain Ultra-High-Energy Neutrino Burst

KM3NeT detected a 100 PeV neutrino (KM3-230213A) with no known source. A Physical Review Letters study proposes exploding quasi-extremal primordial black holes with a dark charge as a possible origin, invoking Hawking radiation that heavier, lighter PBHs would emit high-energy particles in a final burst. IceCube has not observed a comparable event, possibly due to its different energy window. If correct, such PBH evaporations could occur roughly every decade, linking ultra-high-energy neutrinos to PBH physics.

via ScienceAlert|
#dark-charge#hawking-radiation#km3net
Ultra‑Energy Neutrino Sparks Dark-Electron Black Hole Theory
science2 months ago

Ultra‑Energy Neutrino Sparks Dark-Electron Black Hole Theory

A rare, ultrahigh-energy neutrino detected by KM3NeT in 2023 prompts a bold hypothesis: a quasi-extremal primordial black hole dumping dark electrons, triggering a rapid explosion that emits a narrow band of neutrinos; the idea, outlined in a Physical Review Letters preprint and set for formal publication, could explain why KM3NeT saw the event while IceCube did not, but it remains speculative pending more data and analysis.

via Gizmodo|
#dark-electrons#hawking-radiation#km3net
Ultra-Powerful Neutrino Sparks Dark Matter Clue From Ancient Black Hole
science2 months ago

Ultra-Powerful Neutrino Sparks Dark Matter Clue From Ancient Black Hole

A 220 PeV neutrino detected by KM3NeT's ARCA detector in February 2023 far exceeds energies from any accelerator and challenges existing models; a University of Massachusetts Amherst team suggests it came from a primordial black hole evaporating via Hawking radiation, offering a potential link to dark matter and a window into new physics beyond the Standard Model.

via The Daily Galaxy|
#astrophysics#dark-matter#km3net
Ultra-energetic neutrino hints at exploding primordial black holes and dark matter link
space2 months ago

Ultra-energetic neutrino hints at exploding primordial black holes and dark matter link

A 2023 ultra-high-energy neutrino detected by KM3NeT is proposed to be debris from an exploding primordial black hole, potentially evidencing Hawking radiation and primordial black holes as dark matter candidates, though IceCube’s non-detection and a proposed dark-charge model for quasi-extremal black holes add complexity to the interpretation.

via Space|
#dark-matter#hawking-radiation#km3net
Ultra-energetic Neutrino Sparks Primordial Black Hole Hypothesis
science2 months ago

Ultra-energetic Neutrino Sparks Primordial Black Hole Hypothesis

A record-energy neutrino detected by the KM3NET underwater telescope could originate from the explosive end of a primordial black hole, a provocative link to dark matter. Kaiser and Klipfel model a scenario where a small asteroid-mass PBH exploded about 2,000 AU away to produce the neutrino, estimating roughly an 8% chance. While intriguing, the idea remains unproven and controversial among scientists.

via Quanta Magazine|
#dark-matter#hawking-radiation#km3net
Ghost Particle Traverses Earth, Possibly Originating from Dark Matter
science9 months ago

Ghost Particle Traverses Earth, Possibly Originating from Dark Matter

A high-energy neutrino detected by the KM3NeT telescope in 2023 may have originated from dark matter decay, offering a new way to explore dark matter, though the most likely explanation remains a high-energy neutrino from a distant blazar. The event's unique detection, not seen by the IceCube Observatory, has sparked hypotheses about dark matter interactions, with further research expected as KM3NeT completes construction.

via Yahoo|
#astrophysics#dark-matter#high-energy-particle
Scientists Detect Potential First Evidence of Dark Matter from Cosmic Particle
science10 months ago

Scientists Detect Potential First Evidence of Dark Matter from Cosmic Particle

In February 2023, the KM3NeT underwater telescope detected an extremely high-energy particle that may be the first direct evidence of dark matter, possibly originating from a blazar. This discovery challenges existing understanding of cosmic particles and could open new avenues for dark matter research, though further verification is needed. The event's uniqueness and potential implications make it a significant development in astrophysics.

via ZME Science|
#astrophysics#cosmic-particle#dark-matter