Where Did the Electrons Come From in Big Bang Nucleosynthesis?

  • Thread starter Thread starter sruthisupriya
  • Start date Start date
AI Thread Summary
The discussion clarifies that electrons were not formed during big-bang nucleosynthesis (BBN), but rather through a process known as leptogenesis, which occurred earlier. Nucleons, which are protons and neutrons, did not form during BBN either; they were created in a prior phase called baryogenesis. BBN is responsible for fusing nucleons into light elements and determining their relative abundances. The timing of photon appearance in the Big Bang Theory is also addressed, indicating they emerged very early in the universe's history. Overall, the conversation emphasizes the distinction between nucleogenesis and the processes that produced electrons.
sruthisupriya
Messages
33
Reaction score
0
when we talk abt BBN, we only talk abt the nucleons. whr did th electrons come from? was it just beta decay or something else?
 
Astronomy news on Phys.org
Actually nucleons did not form during big-bang nucleosynthesis. The big-bang nucleosynthesis fuses them into light elements, fixing relative abundances of the elements. The nucleons formed previously in a period or process called baryogenesis. For electrons, the corresponding process is called leptogenesis.
 
At what time frame do photon's appear in the current Big Bang Theory?
 
At what time frame do photon's appear in the current Big Bang Theory?

At the very beginning.
 
hellfire said:
Actually nucleons did not form during big-bang nucleosynthesis. The big-bang nucleosynthesis fuses them into light elements, fixing relative abundances of the elements. The nucleons formed previously in a period or process called baryogenesis. For electrons, the corresponding process is called leptogenesis.

'Leptogenesis'. That's such a beautiful word! Now to casually drop that into a conversation when buying milk.
 

Thread 'Our Beautiful Universe - Photos and Videos'

This thread is dedicated to the beauty and awesomeness of our Universe. If you feel like it, please share video clips and photos (or nice animations) of space and objects in space in this thread. Your posts, clips and photos may by all means include scientific information; that does not make it less beautiful to me (n.b. the posts must of course comply with the PF guidelines, i.e. regarding science, only mainstream science is allowed, fringe/pseudoscience is not allowed). n.b. I start this...
View full post »

Thread 'Venus and Jupiter Conjunction'

Today at about 4:30 am I saw the conjunction of Venus and Jupiter, where they were about the width of the full moon, or one half degree apart. Did anyone else see it? Edit: The moon is 2,200 miles in diameter and at a distance of 240,000 miles. Thereby it subtends an angle in radians of 2,200/240,000=.01 (approximately). With pi radians being 180 degrees, one radian is 57.3 degrees, so that .01 radians is about .50 degrees (angle subtended by the moon). (.57 to be more exact, but with...
View full post »

Similar threads

I Big bang balloon?
Replies
5
Views
240
I What Can We Learn About Stellar Nucleosynthesis at the NIC-XVII Symposium?
Replies
0
Views
1K
Big Bang Nucleosynthesis; electron-photon ratio
Replies
0
Views
1K
Please express this theory of mine mathematically or through equations
Replies
3
Views
2K
B What fueled the Big Bang explosion?
Replies
20
Views
4K
Could the Big Bang be related to the flow of current in vacuum tubes?
Replies
7
Views
2K
B Where does the mass of a W boson come from in beta decay?
Replies
3
Views
3K
B The Hubble deep field photos and the edge of the universe
Replies
17
Views
3K
Capacitor charging: Where do extra electrons come from?
Replies
3
Views
809
I How to derive number of nucleons in Universe?
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top