rene Sendra-Server, PhD holder in Physics and research scientist in the UPV/EHU’s Department of Theoretical Physics and History of Science. (Credit: Image courtesy of Basque Research)

Dynamic, Dark Energy in an Accelerating Universe

Jan. 14, 2013 — The models proposed by the UPV/EHU-University of the Basque Country researcher are contributing towards understanding the nature of dark energy.

It was cosmology that drew Irene Sendra from Valencia to the Basque Country. Cosmology also gave her the chance to collaborate with one of the winners of the 2011 Nobel Prize for Physics on one of the darkest areas of the universe. And dark matter and dark energy, well-known precisely because so little is known about them, are in fact the object of the study by Sendra, a researcher in the Department of Theoretical Physics and History of Science of the UPV/EHU’s Faculty of Science and Technology.

“Observations tell us that about 5% of the universe is made up of ordinary matter; 22% corresponds to dark matter, which we know exists because it interacts gravitationally with ordinary matter; another 73% is dark energy, which is known to be there because otherwise one would not be able to account for the accelerating expansion of the universe,” explains Irene Sendra; “We are trying to find out a bit more about what dark energy is,” she adds.

If dark energy did not exist, the gravitational pull exerted by matter would slow down the expansion of the universe, but observations have concluded that the opposite is the case.Dark energy is what makes the universe expand in an accelerating way, and contributing towards understanding its nature is the basis of the research Sendra has done as part of her PhD thesis entitled: “Cosmology in an accelerating universe: observations and phenomenology.”

Read more: Dynamic, dark energy in an accelerating universe — Science Daily.

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