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UrduAs part of the Aurora Early Science Program, an Argonne team is using the lab’s new Aurora exascale supercomputer and AI tools to perform simulations of the universe that aim to shed light on dark matter and dark energy.
Tag: Dark Energy
Bringing dark comets to light
Where did Earth’s water come from? It’s a fundamental scientific question that has never been answered. In fact, NASA reports that we can only observe and understand 5% of the universe — with a whopping 95% remaining a complete mystery because of unobservable dark matter and dark energy.
A New View of the In-Between Years of Our Universe
Just like we use photos to reflect on memories of our past, astrophysicists want to use images of far-off galaxies to understand what the universe was like in its juvenile years. But current imaging technology can only reach so far back in history — 90 to 95 percent of the volume of our 14-billion-year-old universe remains unseen.
Near-Earth Asteroid Data Helps Probe Possible Fifth Force of the Universe
Near-Earth asteroid data helps probe possible fifth force of the universe
A model of holographic dark energy is no longer unstable
Scientists at BFU named after Kant Immanuel, doctor of Physics and Mathematics Artyom V. Astashenok and Alexander S. Tepliakov have proved the viability of a holographic dark energy model. Such model was considered unstable and therefore wasn’t widely used for describing the acceleration in the expansion of the Universe. The results of the research have been published in the Physics Letters B magazine.
Dark Energy Camera Spies Cometary Globule Reaching for the Stars
The dark, dusty cometary globule known as CG 4 is spotlighted in this image from the Department of Energy-fabricated Dark Energy Camera mounted on the U.S. National Science Foundation Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory, a Program of NSF NOIRLab.
First year of DESI results unveil new clues about dark energy
Researchers at The Ohio State University played a major role in analyzing the first year of data from the Dark Energy Spectroscopic Instrument’s survey into the history of the universe.
UC Irvine astronomers’ simulations support dark matter theory
Computer simulations by astronomers support the idea that dark matter – matter that no one has yet directly detected but which many physicists think must be there to explain several aspects of the observable universe – exists, according to the researchers, who include those at the University of California, Irvine.
Charting the Night Sky with Exascale Computers
Creating multiple universes to see how they run might be tempting to scientists, but it’s obviously not possible. That is, as long as you need physical universes. If you can make do with virtual ones, there are far more options.
Revelan detallada panorámica de 11 mil millones de años hacia el pasado del Universo
Astrónomos de diversas partes del mundo están realizando un análisis inicial de los datos del primer año de estudio del Instrumento Espectroscópico de Energía Oscura, que lleva a cabo un sondeo de 5 años para crear el mapa en 3D más grande que se haya hecho sobre el Universo. Utilizando el espectro de las galaxias cercanas y de cuásares distantes, los astrónomos reportaron que lograron medir la historia de la expansión del Universo con la mayor precisión jamás alcanzada, proporcionando un panorama sin precedentes sobre la naturaleza de la energía oscura y su efecto en la estructura a gran escala del Universo.
DESI Looks 11 Billion Years Into the Past to Reveal Most Detailed View Ever of the Expanding Universe
The Dark Energy Spectroscopic Instrument is conducting a five-year survey to create the largest 3D map of the Universe ever. Astronomers are now performing initial analysis of the survey’s first-year data. Using spectra of nearby galaxies and distant quasars, astronomers report that they have measured the expansion history of the Universe with the highest precision ever, providing an unprecedented look at the nature of dark energy and its effect on the Universe’s large-scale structure.
First Results from DESI Make the Most Precise Measurement of Our Expanding Universe
Researchers have used the Dark Energy Spectroscopic Instrument to make the largest 3D map of our universe and world-leading measurements of dark energy, the mysterious cause of its accelerating expansion
The Largest Digital Camera Ever Built for Astronomy Makes Its Debut
On screensaver mode, smart TVs often rotate through photos of natural wonders, from waterfalls to canyons. Now imagine hundreds of those televisions, with one single image spread out among them.
El Estudio de la Energía Oscura: Revelando lo invisible
El Estudio de la Energía Oscura (también conocido en inglés como Dark Energy Survey) fue un programa de observación de seis años diseñado para explorar el cosmos con el fin de comprender mejor la energía oscura, un concepto complejo que se desarrolló cuando los científicos se dieron cuenta de que el Universo parecía estar rompiendo sus propias leyes de la física –supuestamente inmutables. Pero, ¿cómo se observa algo que no se ve? ¿Y por qué los científicos están tan convencidos de que realmente hay algo que buscar?
The Dark Energy Survey: Uncovering the Invisible
The Dark Energy Survey was a six-year observing program designed to survey the skies in order to better understand dark energy — a complex concept that developed when scientists realized that the Universe seemed to be breaking its own supposedly immutable laws of physics. But how do you observe something that cannot be seen? And why are scientists so convinced that there is really something to search for?
Department of Energy Announces $2.2 Million for U.S.-Japan Cooperative Research in High Energy Physics
Today, the U.S. Department of Energy (DOE) announced $2.2 million for 11 collaborative research projects in high-energy physics that involve substantial collaboration with Japanese investigators.
Einstein and Euler put to the test at the edge of the Universe
The cosmos is a unique laboratory for testing the laws of physics, in particular those of Euler and Einstein. Euler described the movements of celestial objects, while Einstein described the way in which celestial objects distort the Universe.
DESI Early Data Release Holds Nearly Two Million Objects
The universe is big, and it’s getting bigger. To study dark energy, the mysterious force behind the accelerating expansion of our universe, scientists are using the Dark Energy Spectroscopic Instrument (DESI) to map more than 40 million galaxies, quasars, and stars. Today, the collaboration publicly released its first batch of data, with nearly 2 million objects for researchers to explore.
Estudio registra casi dos millones de galaxias, cuásares y estrellas en su publicación preliminar
Casi dos millones de objetos, que incluyen galaxias distantes, cuásares y estrellas, se encuentran en la publicación preliminar de datos del Instrumento Espectroscópico de Energía Oscura (DESI), del Laboratorio Nacional Lawrence Berkeley, en el Observatorio Nacional de Kitt Peak, un Programa de NOIRLab de NSF. Estos datos ayudarán a los investigadores a estudiar la historia de la expansión del Universo con un detalle sin precedentes y explorar otras áreas de la investigación astrofísica de frontera. DESI es financiado por el Departamento de Energía de los Estados Unidos y administrado por el Laboratorio Berkeley.
Nearly Two Million Galaxies, Quasars, and Stars Contained in DESI Early Data Release
Nearly two million objects, including distant galaxies, quasars, and stars, comprise the early data release from the Lawrence Berkeley National Laboratory Dark Energy Spectroscopic Instrument (DESI) at Kitt Peak National Observatory, a Program of NSF’s NOIRLab. These data will help researchers study the expansion history of the Universe in unprecedented detail and explore other frontier areas of astrophysical research. DESI is funded by the US Department of Energy and managed by Berkeley Lab.
Rachel Mandelbaum: Then and Now / 2012 Early Career Award Winner
Rachel Mandelbaum prepares to measure weak gravitational lensing, the tiny deflections of light from distant galaxies due to the gravitational influence of dark matter and visible matter that the light rays pass by on their way to Earth. Those measurements can help answer fundamental questions.
The Most Precise Accounting Yet of Dark Energy and Dark Matter
Analyzing more than two decades’ worth of supernova explosions convincingly bolsters modern cosmological theories and reinvigorates efforts to answer fundamental questions.
After Fire and Monsoons, DESI Resumes Cataloguing the Cosmos
In June, the Dark Energy Spectroscopic Instrument survived a massive wildfire, followed by rains and mudslides. After cleaning and testing the equipment, DESI collaborators successfully restarted the experiment and began imaging the night sky again on Sept. 10. The survey is creating the largest 3D map of the universe ever made to study a phenomenon called dark energy.
15 spectacular photos from the Dark Energy Camera
From high atop a mountain in the Chilean Andes, the Dark Energy Camera has snapped more than one million exposures of the southern sky. The images have captured around 2.5 billion astronomical objects, including galaxies and galaxy clusters, stars, comets, asteroids, dwarf planets and supernovae.
Department of Energy Announces $78 Million for Research in High Energy Physics
Today, the U.S. Department of Energy (DOE) announced $78 million in funding for 58 research projects that will spur new discoveries in high energy physics. The projects—housed at 44 colleges and universities across 22 states—are exploring the fundamental science about the universe that also underlies technological advancements in medicine, computing, energy technologies, manufacturing, national security, and more.
Anže Slosar: Then and Now / 2011 Early Career Award Winner
To map the structures in the universe, Anže Slosar scaled up Baryon Oscillation Spectroscopic Survey data. He uses light from very distant cosmic objects called quasars as a backlight to illuminate the structure in the universe in front of them.
Dark Energy Survey releases most precise look at the universe’s evolution
The Dark Energy Survey collaboration has created the largest ever maps of the distribution and shapes of galaxies, tracing both ordinary and dark matter in the universe out to a distance of over 7 billion light years. The results are based on the first three years of data from the survey.
To Map the Universe, Astrophysicists Launch Largest Sky Survey Yet
Nearly 40 years after creating the first, iconic map of the universe, researchers aim for the largest map ever.
Successful Start of Dark Energy Spectroscopic Instrument (DESI) Follows Record-Setting Trial Run
A five-year quest to map the universe and unravel the mysteries of “dark energy” is beginning officially today, May 17, at Kitt Peak National Observatory near Tucson, Arizona. To complete its quest, the Dark Energy Spectroscopic Instrument (DESI) will capture and study the light from tens of millions of galaxies and other distant objects in the universe.
Building a Giant 2D Map of the Universe to Prepare for the Largest 3D Map
Before DESI, the Dark Energy Spectroscopic Instrument, can begin its 5-year mission from an Arizona mountaintop to produce the largest 3D sky map yet, researchers first needed an even bigger 2D map of the universe.
Jeffrey Newman: Then and Now / 2010 Early Career Award Winner
Physics professor Jeffrey Newman at the University of Pittsburgh is improving the methods for calculating the distances and developing target strategies for Dark Energy Spectroscopic Instrument experiments. These activities are supporting the search for answers about dark energy.
Sensors of world’s largest digital camera snap first 3,200-megapixel images at SLAC
Crews at the Department of Energy’s SLAC National Accelerator Laboratory have taken the first 3,200-megapixel digital photos – the largest ever taken in a single shot – with an extraordinary array of imaging sensors that will become the heart and soul of the future camera of Vera C. Rubin Observatory.
Lab Researcher and Physics Undergrad Shares Poster Project Honoring Black Physicists
Inspired by the nation’s grappling with issues of race and racial discrimination, UC Berkeley physics major and Berkeley Lab student assistant Ana Lyons turned to art as a way to contribute to the conversation.
Five thousand eyes on the skies: Scientists choreograph robots to observe distant galaxies
Scientists have begun operating the Dark Energy Spectroscopic Instrument, or DESI, to create a 3-D map of over 30 million galaxies and quasars that will help them understand the nature of dark energy. The new instrument is the most advanced of its kind, with 5,000 robotic positioners that will enable scientists to gather more than 20 times more data than previous surveys. Researchers at Fermilab helped develop the software that will direct these positioners to focus on galaxies several billion light-years away and are currently in the process of fine-tuning the programs used before the last round of testing later this year.
Drones Help Calibrate Radio Telescope at Brookhaven Lab
Cosmologists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory are experimenting with a prototype radio telescope, called the Baryon Mapping Experiment (BMX). Built at the Lab in 2017, the prototype serves as a testbed for managing radio interference and developing calibration techniques. Lessons learned from the prototype could pave the way for Brookhaven to develop a much larger radio telescope in collaboration with other national Labs, universities, and international partners.
Now Complete, Telescope Instrument is Poised to Begin Its Search for Answers About Dark Energy
Even as the Dark Energy Spectroscopic Instrument, or DESI, lies dormant within a telescope dome on a mountaintop in Arizona, due to the COVID-19 pandemic, the DESI project has moved forward in reaching the final formal approval milestone prior to startup.
DESI Team Prepares for Telescope Instrument’s Restart after Unexpected Shutdown
Despite a temporary shutdown of the Dark Energy Spectroscopic Instrument in Arizona – which was in its final stages of testing in preparation to begin mapping millions of galaxies in 3D when the pandemic struck – a variety of project tasks are still moving forward.
Looking Up From the Mountaintop: Q&A with a Telescope Instrument’s Lead Observer
In this Q&A Satya Gontcho A Gontcho, a lead observer for the Dark Energy Spectroscopic Instrument (DESI), shares her experiences at the DESI site near Tucson, Arizona, including evening observing stints to run through detailed checklists and probe how the instrument’s components are working.
Register to Join a Special April 16 Media Tour of a Telescope Instrument that Will Create a 3D Map of Millions of Galaxies
Members of the media are invited to attend a mid-April dedication of the Dark Energy Spectroscopic Instrument (DESI), which is scheduled to begin its five-year mission to construct a 3D map of the universe in the coming months.
Connecting the dots in the sky could shed new light on dark matter
Astrophysicists have come a step closer to understanding the origin of a faint glow of gamma rays covering the night sky. They found that this light is brighter in regions that contain a lot of matter and dimmer where matter is sparser – a correlation that could help them narrow down the properties of exotic astrophysical objects and invisible dark matter.
The Big Questions: Josh Frieman on Dark Energy
The Big Questions series features perspectives from the five recipients of the Department of Energy Office of Science’s 2019 Distinguished Scientists Fellows Award describing their research and what they plan to do with the award. Josh Frieman is the division head of particle physics at Fermilab.
How to Build a 3D Map of the Universe – and Why
In the 1980s, Saul Perlmutter at the Department of Energy’s (DOE) Lawrence Berkeley National Laboratory (LBNL) and his collaborators realized that they could use data about supernovae to research the history of the universe. They expected to see that very distant supernovae appear a bit brighter than they would in an expanding universe that wasn’t slowing in its growth.
The data revealed something else entirely.
Deep Learning Reveals Mysteries of Deep Space
The Science How do you determine the measurable “things” that describe the nature of our universe? To answer that question, researchers used CosmoFlow, a deep learning technique, running on a National Energy Research Scientific Computing Center supercomputer. They analyzed large,…