dark matter

From Página 12, Sept. 12, 2020: Recibió el reconocimiento “Nuevos Horizontes en Física 2021” en el marco de los premios Breakthrough. Se recibió en la UBA y desde hace años investiga en el Fermilab de Chicago, el laboratorio de física de partículas más importante de Estados Unidos.

The existence or nonexistence of dark matter is a pressing and modern problem in physics. Something makes galaxies spin too fast, but nobody knows just what. In this episode of Subatomic Stories, Fermilab scientist Don Lincoln talks about the ongoing debate and points to two observations that make scientists more confident that dark matter is a real thing.

There are mysteries in the cosmos that general relativity can’t explain, such as how galaxies rotate and how clusters of galaxies move. Scientists have ideas as to possible explanations. In this 13-minute episode of Subatomic Stories, Fermilab scientist Don Lincoln lists some of the most pressing mysteries.

Prominent among physics’ many mysteries is dark matter — strictly speaking invisible matter — but the name stuck. The evidence is overwhelming that there is about five times more mass in the universe than we can see in the stars, planets, gas and dust.

What is dark matter made of? Scientists at Fermilab are using ultrasensitive devices to look for the elusive particles that would explain the nature of dark matter. In this 3-minute video, physicist Javier Tiffenberg explains how a new detection technology, based on sensors known as skipper charge-coupled devices, or CCDs, provides a new way of looking for dark matter particles.

The skipper CCD instrument at the heart of scientist Javier Tiffenberg’s research shows promise for dark matter, neutrino detection and more. For the development of this forefront detector, Tiffenberg has won this year’s Universities Research Association Early Carer Award.

Scientists on the Dark Energy Survey have used observations of the smallest known galaxies to better understand dark matter, the mysterious substance that makes up 85% of the matter in the universe. The smallest galaxies can contain hundreds to thousands of times more dark matter than normal visible matter, making them ideal laboratories for studying this mysterious substance. By performing a rigorous census of small galaxies surrounding our Milky Way, scientists on the Dark Energy Survey have been able to constrain the fundamental particle physics that governs dark matter.

Fermilab scientists have proposed a new experiment, FerMINI, to look for millicharged particles in a specific mass range. These hypothetical particles have charges significantly smaller than that of quarks. The discovery of millicharged particles would upend our understanding of nature’s fundamental constituents.