Questions tagged [proton]

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In the case of heat death of our universe, would proton decay overtake the singularity decay due to Hawking radiation?

According to GUT (The Grand Unified Theory), the half life of protons is 1.67×10^34 years if the standard model is incorrect and the time black holes take to evaporate due to hawking radiation is more ...
Arjun's user avatar
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why couldn't atoms form in the early big bang?

I'm asking about the time when temperature was super high, but at that time we already had proton, neutron, electrons. It seems they were moving super fast due to temperature being so high. What I'm ...
Giorgi Lagidze's user avatar
9 votes
3 answers

Does the existence of hydrogen in the universe create an obscuration effect similar to the way air does at great distances?

I've had this question for a while. I understand the universe is full of "dust". I am also aware of the fact that there is an average measure of particle density in the universe. I am ...
Rabbi Kaii's user avatar
5 votes
2 answers

Solar flare generate energetic protons. Where do the electrons go?

A solar flare sends many atoms in space (mainly He and H), many of which, when they reach Earth, are ions (He++ and H+). What I recall from my school days, is that an electron goes from one atom to ...
Alexis Wilke's user avatar
1 vote
1 answer

How is the H II 'region' directly detectable? By Compton or Thomson free-particle scattering? At what wavelengths?

The Wikipedia page on H II regions says that they are 'indirectly' detectable by the detection of doubly-ionized oxygen atoms mixed in.... (I am presuming atoms, not diatomic molecules...) But are ...
Kurt Hikes's user avatar
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4 votes
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Is it true that black holes emit only photons, electrons, and positrons in the form of Hawking Radiation?

According to this comment, if the peak photon energy is 511 KeV, electrons and antielectrons begin to be produced along with photons. So when the peak energy is ~940 MeV, the rest mass of a proton, ...
WarpPrime's user avatar
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4 votes
2 answers

Is there a connection between the solar wind and the cosmic radiation?

Cosmic radiation consists of high-energetic particles, mostly protons, that come amongst others from supernovae and our sun, right? The solar wind also consists of charged particles, like protons and ...
Mike's user avatar
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6 votes
2 answers

Measures for the degeneracy from protons?

Come to think of it, the only things we hear about degeneracy is neutron and electron. I made a generalization: White Dwarf: Supported by electron degeneracy. Neutron Star: Supported by neutron ...
Max0815's user avatar
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