PLANCK2025 - The 27th International Conference From the Planck Scale to the Electroweak Scale

Session

Astroparticle detection

29 May 2025, 17:00

Conveners

Astroparticle detection

• Francesco D'Eramo (University of Padua)

116. Experimental monopole bounds updated by models of acceleration in cosmic fields

Michele Doro (Dipartimento di Fisica e Astronomia Università di Padova)

29/05/2025, 17:00

Magnetic Monopoles are accelerated by cosmic magnetic fields in relation to their mass and number, due to back-reaction. After recent experimental lower limits on the intergalactic magnetic fields (IGMFs), we have revisited a coherent acceleration scenario in which monopoles are accelerated in intergalactic and Galactic magnetic fields before reaching the Earth (Phys.Dark Univ. 46 (2024))....

14. Hunting for Relativistic Axions with the Square Kilometer Array

Tanmoy Kumar (Indian Association for the Cultivation of Science)

29/05/2025, 17:20

Axion-like particles (ALPs) are weakly interacting particles that are predicted to exist by many beyond standard model theories. A large number of experiments have been constructed or are under construction to search for these ALPs both directly and indirectly (through astrophysical or cosmological observations). In this work we have studied how photon signals originating from the oscillation...

34. On the fate of evaporating black holes: how the burden of their memory stabilizes them

Dr Michael Zantedeschi (INFN, Sezione di Pisa)

29/05/2025, 17:40

The “memory burden” effect describes how an object’s stored information resists its own decay. This effect is especially pronounced in “saturons”—systems with maximal entropy consistent with unitarity—of which black holes are prime examples. I will show how this memory burden can halt Hawking evaporation, stabilizing black holes against complete decay. Importantly, this mechanism is not...

178. Could We Observe an Exploding Black Hole in the Near Future?

Quim Iguaz Juan (UMass Amherst)

29/05/2025, 18:00

Observation of an exploding black hole would provide the first direct evidence of primordial black holes, the first direct evidence of Hawking radiation, and definitive information on the particles present in nature. However, indirect constraints suggest that direct observation of an exploding Schwarzschild black hole is implausible. We introduce a dark-QED toy model consisting of a dark...

51. Cosmic Colliders: High Energy Physics with First-Order Phase Transitions

Bibhushan Shakya (DESY)

29/05/2025, 18:20

Vacuum decay through runaway first order phase transitions presents a unique opportunity for particle physics and cosmology: collisions of vacuum bubbles can act as cosmic scale high energy colliders close to the Planck scale, providing access to high energy physics far beyond any temperature or energy scale ever reached in the history of our Universe. This talk will cover recent developments...