Primordial Universe, Cosmology

Primordial Universe, Cosmology Primordial means something existing at or from the beginning of time. So this page is about discussing the early Universe phenomena.

The Big Bang Theory is the leading explanation about how the universe began. At its simplest, it says the universe as we know it started with a small singularity, then inflated over the next 13.8 billion years to the cosmos that we know today. Because current instruments don't allow astronomers to peer back at the universe's birth, much of what we understand about the Big Bang Theory comes from ma

thematical formulas and models. Astronomers can, however, see the "echo" of the expansion through a phenomenon known as the cosmic microwave background. In the first second after the universe began, the surrounding temperature was about 10 billion degrees Fahrenheit (5.5 billion Celsius), according to cosmologist and particle physicists. The cosmos contained a vast array of fundamental particles such as neutrons, electrons and protons. These decayed or combined as the universe got cooler.

CosmoReionMC: A package for estimating cosmological and astrophysical parameters using CMB, Lyman-{\alpha} absorption an...
12/08/2021

CosmoReionMC: A package for estimating cosmological and astrophysical parameters using CMB, Lyman-{\alpha} absorption and global 21 cm data. (arXiv:21... relevance:30% https://t.co/6wCCTKKTvM https://t.co/FEUpSuZmaH

We present a Markov Chain Monte Carlo (MCMC)-based parameter estimation package, CosmoReionMC, to jointly constrain cosmological parameters of the $Λ$CDM model and the astrophysical parameters related to hydrogen reionization. The package is based on a previously developed physically motivated semi...

Dark photon limits: a cookbook
05/07/2021

Dark photon limits: a cookbook

The dark photon is a massive hypothetical particle that interacts with the Standard Model by kinetically mixing with the visible photon. For small values of the mixing parameter, dark photons can evade cosmological bounds to be a viable dark matter candidate. Due to the similarities with the electro...

Volcanic erruption
14/11/2020

Volcanic erruption

Researchers in Japan, the US and China say they have found more concrete evidence of the volcanic cause of the largest mass extinction of life. Their research looked at two discrete eruption events: one that was previously unknown to researchers, and the other that resulted in large swaths of terres...

The Era of Anomalies: Particle physicists are faced with a growing list of “anomalies”—experimental results that conflic...
15/05/2020

The Era of Anomalies: Particle physicists are faced with a growing list of “anomalies”—experimental results that conflict with the standard model but fail to overturn it for lack of sufficient evidence.

Particle physicists are faced with a growing list of “anomalies”—experimental results that conflict with the standard model but fail to overturn it for lack of sufficient evidence.

Renowned Mathematician And Physicist Freeman Dyson has Died At Age 96 Known for his pioneer work in quantum electrodynam...
29/02/2020

Renowned Mathematician And Physicist Freeman Dyson has Died At Age 96 Known for his pioneer work in quantum electrodynamics, solid-state physics, astronomy, and nuclear engineering. He is also known for his work on Dyson's transform, a fundamental technique in additive number theory.

Freeman Dyson, renowned scientist and scholar, has died at 96, according to his daughter Mia.

24/11/2019

Crossed 1000 likes and subscribers of the group. I request you all to share your ideas and research articles on the group. Thanks

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