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Is there a limit to how high electromagnetic radiation frequency can go

Achilles
in Quantum Theory

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Particle with the highest kinetic energy that has been detected to this moment, has been named OMG particle.

https://en.wikipedia.org/wiki/Oh-My-God_particle

Couple articles to read:

https://en.wikipedia.org/wiki/Ultra-high-energy_cosmic_ray

https://en.wikipedia.org/wiki/Greisen–Zatsepin–Kuzmin_limit

 

After collision of such (charged) particle from cosmic ray, with so high kinetic energy, with detector, there can be created one of the highest energetic gamma photons.

 

Edited by Sensei

Whatever the energy content of the universe is would dictate this, since frequency and energy are proportional to each other, and energy in any frame is conserved. But if something had a very small mass (e.g. an electron), it could be moving quite fast without having an inordinate amount of energy, in a frame where the high-energy photon was emitted, and the frequency would then be blue-shifted to an even higher value..

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