Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
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Re: Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
#2For laymen, can someone who is knowledge put this into persepective ?
Re: Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
#3For laymen, can someone who is knowledge put this into persepective ?
Its 100 times as much energy per photon than we as humans are able to accelerate particles in the cern large hadron collider with everything we have. It is a stupendous amount of energy per photon.
Re: Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
#4For laymen, can someone who is knowledge put this into persepective ?
https://en.wikipedia.org/wiki/Oh-My-God_particle might help.
Re: Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
#5For laymen, can someone who is knowledge put this into persepective ?
1.4 PeV are about 0.224 millijoules or roughly an 8 billionth of a phone charge, so not much really. However, the photons we usually deal with are weaker by an unimaginable amount, but also much more plentiful. For example, a 100 W light bulb emits something in the order of 10^21 photons per second. If you had a light bulb that emitted the same amount of photons with 1.4 PeV each, you'd have a device equivalent to one Tsar bomb (the most powerful bomb ever detonated in the history of mankind) every second.
Re: Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
#6For laymen, can someone who is knowledge put this into persepective ?
https://en.wikipedia.org/wiki/Oh-My-God_particle might help.
There is another, imo even better, page on this particle:
Re: Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
#7For laymen, can someone who is knowledge put this into persepective ?
https://en.wikipedia.org/wiki/Oh-My-God_particle might help.
At 320 EeV, the OMG particle is over 5 orders of magnitude more than 1.4 PeV. It's a completely nuts amount if energy to have in a single particle: about the same as a decently moving baseball. From the particle's frame, it takes only a day to go a billion light years.
Re: Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
#8For laymen, can someone who is knowledge put this into persepective ?
1.4 PeV are about 0.224 millijoules or roughly an 8 billionth of a phone charge, so not much really. However, the photons we usually deal with are weaker by an unimaginable amount, but also much more plentiful. For example, a 100 W light bulb emits something in the order of 10^21 photons per second. If you had a light bulb that emitted the same amount of photons with 1.4 PeV each, you'd have a device equivalent to on…
It's roughly the amount of kinetic energy in a single grain of rice if you gently throw a handful of them. It's not much, but it's not an inconceivably small amount of energy either.
Comparing it to a phone charge is less useful because batteries store a lot of energy (especially when converted to kinetic energy).
Re: Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
#9For laymen, can someone who is knowledge put this into persepective ?
1.4 PeV are about 0.224 millijoules or roughly an 8 billionth of a phone charge, so not much really. However, the photons we usually deal with are weaker by an unimaginable amount, but also much more plentiful. For example, a 100 W light bulb emits something in the order of 10^21 photons per second. If you had a light bulb that emitted the same amount of photons with 1.4 PeV each, you'd have a device equivalent to on…
That's a big old phone battery: 8 billion times 0.2mJ is a 120000mAh 3.7V battery.
But yes, it's in that ballpark and it's a loooot of energy to pack into a proton.
Re: Ultrahigh-energy photons up to 1.4 PeV from 12 γ-ray Galactic sources (2021)
#10Earlier quoted context omitted.
https://en.wikipedia.org/wiki/Oh-My-God_particle might help.
At 320 EeV, the OMG particle is over 5 orders of magnitude more than 1.4 PeV. It's a completely nuts amount if energy to have in a single particle: about the same as a decently moving baseball. From the particle's frame, it takes only a day to go a billion light years.
> about the same as a decently moving baseball
I heard this, but it's hard to believe it's real (or, obviously, I'm misunderstanding it). What would happen if one of these hit a person in space? Would it be the same sort of feeling as getting hit by a baseball?
Earlier I wondered how this much energy didn't totally wreck the detector, but someone else posted this link https://www.fourmilab.ch/documents/OhMyGodParticle/, which says "The Fly's Eye consists of an array of telescopes which stare into the night sky and record the blue flashes which result when very high energy cosmic rays slam into the atmosphere". So the protons don't actually hit the detector. That makes more sense.