## Dark Energy and Dark Matter as Inertial Effects

**Serkan Zorba**

A rigidly rotating model of the universe is postulated. It is shown that dark energy and dark matter are cosmic inertial effects resulting from such a cosmic rotation, corresponding to centrifugal and a combination of centrifugal and the Coriolis forces, respectively. The physics and the cosmological and galactic parameters obtained from the model closely match those attributed to dark energy and dark matter in the standard Λ-CDM model. (…)

(…) **Conclusions**

In summary, I have demonstrated that a rigidly rotating universe model of the universe––with an angular frequency equal to the Hubble’s constant––resolves some of most outstanding problems in cosmology today in a heartbeat.

Specifically, in the first part, I have shown that the rotary model naturally explains many seemingly mysterious and difficult issues surrounding dark energy such as the origin and extreme small value of the cosmological constant/dark energy, its

smoothness, its gravitationally repulsive nature and Hubble’s law.

The model also successfully predicts the recent onset of cosmic acceleration with a high degree of precision.

In the second part, I have shown that dark matter is also a cosmic inertial effect resulting from the rotation of the universe, specifically due to the cosmic Coriolis and centrifugal forces.

The hitherto mysterious universal acceleration parameter, and the global contributions in the local dynamics of galaxies––as encountered, but not at all understood, in observations and the observationally-backed nonstandard gravity theories of MOND, CG and MSTG––all find a natural explanation in the rotary model without the additional cost of forsaking the standard

Newton-Einstein gravity paradigm. Furthermore, the rotary model naturally produces the linear and quadratic potential terms recently deduced from galactic rotation curves as nothing but the effects of cosmic Coriolis and centrifugal forces.

My model thus has significant implications for the cosmological principle and the standard model of cosmology.

According to the rotary model, our universe appears to possess mysterious dark energy and dark matter because it is rotating, and the centrifugal and Coriolis forces due to rotation are perceived by us as dark energy and dark matter, respectively.

Furthermore, the logical antecedent of a spinning universe is a “Big Spin,” with a colossal initial angular momentum, instead of a giant spatial expansion called the Big Bang.

Spinning expands the universe with repulsive (centrifugal) forces, and naturally results in Hubble’s law.

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