Universe Expansion Rate Recalculated

Researchers at Clemson University calculated the Hubble constant used to measure the expansion of the universe with a new technique. The team compared data from gamma rays and extragalactic backlight.

Using a state-of-the-art technology and techniques available today, a team of Clemson University astrophysicists developed a new approach to measuring one of the most fundamental laws of the universe. The team used to describe the expansion rate of the universe. Hubble constant Measured again.

Researchers published their research in The Astrophysical on November 8 in the form of an article. According to the article, the team analyzed data from telescopes in orbit and ground to find a new unit of measurement of how fast the universe is expanding.

universe expansion

How the team achieved the new measurement was also included in the article. The researchers compared the gamma ray data from the Fermi Gamma Ray Telescope and the Imaging Atmospheric Cherenkov Telescopes with the data from the gal extragalactic background light EB models.

This new strategy, used by the team of researchers, has revealed what the rate of expansion of the universe is. Accordingly, the universe, 67.5 kilometers per second per megaparsec Expanding. (One parsec is up to three light years and one megaparsec is 1 million parsecs.)

What is the relationship between gamma ray and extragalactic barley background light?

Gamma rays are the most energetic form of light. The extragalactic background light emits all the stars or dust Ultraviolet, visible and infrared light is a cosmic mist. When gamma rays and extragalactic backlight interact, they leave an observable mark that scientists can create and analyze their hypotheses.

researchers re-measured the rate of expansion of the universe

The world of astronomy invests enormously in different parameters to accurately perform cosmological calculations, including the Hubble constant. According to the researchers, if these laws can become more precise new insights and new discoveries It will be released.


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Alberto Dominguez, a member of the team of researchers, described their success as follows:

G It is remarkable that we use gamma rays to study cosmology. Our technique has allowed us to go beyond existing techniques to measure the important features of the universe. Our results show how far the new field of high-energy astrophysics can progress in 10 years. ’