In the standard Big Bang Model of The universe, the matter (Quarks) and Antimatter ( antiquarks) were in almost equal amount and in equal mass and in seperate compartment(?). They were in constant aniinhilation in to flash energy and radiation. But very peculiarly the universe is now dominated with matter and dark energies which it should not be. what happened to the antimatter in the universe? Did they created another universe called Antiuniverse(?). Does anti universe exist in reality? Not in mathematics!. Anti proton,[in CERN athena project experiment] anti nuetron exist in this universe as for example PET scanning. If anti universe exist then anti galaxies exist?[ No body has seen them yet], antistar exist?, anti planetary system also exist in that antiuniverse?. In Big Bang however Whirl winds of condensed energy with matter and antiparticles found. Anti gravity is also known for antimatter.
or some how antimatter exhausted and matter ( baryons) took the upper hand and if it is so how?
We often see the electrical sparks on sky. are they reaction between matter and antimatter in these days?
Dr. Pranab Kr Bhattacharya
Mr Rupak Bhattacharya & Mr Ritwik Bhattacharya
www.unipathos.com

CP Violation. Look it up.


P.S. By rights this belongs in ATM since the idea of the existence of anti-matter galaxies is decidly not part of standard astronomy.

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"I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind." - William Thompson, 1st Baron Lord Kelvin

"If it was so, it might be, and if it were so, it would be, but as it isn't, it ain't. That's logic!" - Tweedledee

This isn't right. This isn't even wrong. - Wolfgang Pauli

Moved from Astronomy to ATM.

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Everything I need to know I learned through Googling.

I am aware of CP violation theory of Nobel Lauratee Shakarov. As per his theory the Antimatter & most of Matter would have annihilated but as per CP violation theory, matter and antimatter did not always behaved in the same way resulting in a one in a billions imbalance of matter. Symmetries is however a simple mathematical concept to describe the particle physics. Here anti particles mirrors the related particles by having opposite signs for their several properties particularly in electrical charges and particles theory that express in term relationship in term of mathematical operator or miror is "C" and 'C" miror yields an antiparticle . Another mathematical Miror is "P" which reverses particle interaction in the space time. Now asper Dirac equation in a particle interaction Cand P totalled overthe particles involved will be same as before and after the interaction and CP are each then conseved. and if this does not happen then CP violation. Matter antimatter and antimatter matter transition happens due to osillation and very rapid spped in 17 trillions times per seconds.
Is their laboratory experiment for such a theory with dancing antiparticles?with quarks and their flavours?
But Does CP violation realy can explain lack of antimatter in the universe during the creation of Annihilation? or this is partialy true
Rather If we consider that during annihilation Matter and Antimatter were seperated in different compartments and matter went in one direction while antimatter in other direction and two seperate universe were created
Then of course question of Antigalaxies comes in space time- No body have seen them yet
There is antigravity between antimatter/matter, antimatter/antimatter
cosmic voids are good source of antiparticles still.
DR. Pranab Kr Bhattacharya
Mr Rupak Bhattacharya & Ritwik Bhattacharya
www.unipathos.com

The Big Bang model is a rusty, worn-out nail. I wouldn't hand too much weight on it.

You may be able to contribute to this thread instead.

Fred

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"For shame, gentlemen, pack your evidence a little better against another time."
-- John Dryden, "The Vindication of The Duke of Guise" 1684

So where could these 'anti-galaxies' be?

Certainly not in clusters or groups, with ordinary matter galaxies (there's rather too little annihilation gamma radiation observed).

Maybe in voids? But the voids were once very much smaller, with much the same interactions between neighbouring regions as observed in todays galaxy groups.

In any case, wouldn't there be a (rather obvious) signature left on the CMB (of the time, earlier, when the matter and anti-matter partitioned itself into separate regions)?

And even if one could imagine that such partitioned regions exist, how did they come to be so well partitioned?

We know what happened in the ~1sof Planks time of Big Bang
We do not still know what happened in first ten thousndth of a second of Big Bang.
Cosmic soup consisted of equal ammount of particles and antiparticles_ They were in constant annihilation& radiation as per Eienstien Theory of Relativity E=mC*2
At 10*9K temperature matter(Nucleon) were produced, thanks to creator, if any, that anti proton were not created at that very time. If at all created, remained in a seperate compartment & formed seperate antigalaxies?
How seperation then created? - a most fundamental question- The question of seperation of matter and antimatter, proton and antiproton, helium and anti helium
We do not see or do not find antimatter in our observable universe
Was the matter and antimatter mixed together?
OUR THEORY_: Matter and antimatter were in two seperate compartments, though in onetime mixed together without appreciable mixing. What was the mechanism of seperation Then? Does antimatter stars, galaxies at all exists ,but we can not see. According to conventional Big Bang model there were excess of baryon particles(~1in 10*9) over antiparticles in the early stage of evolution of universe. At that time the thermal energy KT excceded the rest energy mpc*2 of baryon particles. It was to the excess amount of KT for that we see the present existance of matter in the universe. So as the thermal enrgy dropped bellow mc*2 the baryon and antibaryon started ton annihilate and leaving just excess baryon intact? Let us consider a model of universe ( Authors model of Anti universe) that was initially filled up with thermal radiation. Its expansion let us describe by a scale factor R(t) which behaved approx t*-1/2 while the temperature varied like R*-1. For the early stage of universe the effect of space curvature was neglegible. This model can be devided into several periods according to content of thermal radiation.The hadronic (KT>100mev) , Leptonic(KT>1mev) and radiative(KT>300K). Super imposed on division, on evolution of baryons we have to consider also other periods. The seperation periods( KT>350Mev) and annihilation period(KT>25Kev) and coalescence period(T>300K). So there must be a process that could however seperated matter and antimatter into contiguious regions at some early epoch of Big bang, The regions remain seperated untill and after decoupling would prevent collision between them owing to effect of radiation. After decoupling, the matarial combined in several such regions started to collapse and coalesec. The collapse and coalescence led annihilation of particles from regions to regions. The rate at which coalescence occured dependedon scale or density of fluctuation. So there must be a seperation period of matter and antimatter. On the seperation period the particles and antiparticles seperated as a consiquence of structural repulsion[ Bhattacharya Rupak and Bhattacharya Pranab Kr- Does univcerse contain anti galaxies- a myth or a reality- Space light V 2; No Nov- Decemb; P7-13,1998] & in wwwunipathos.com " Did our universe started in a big Bang or just Be at page 31-35 NB*=power to the as we had no superscript
Dr. Pranab Kr Bhattacharya
Mr Rupak Bhattacharya & Mr Ritwik Bhattacharya
www.unipathos.com