A team from Imperial College London and University of Barcelona used astronomical surveys to measure the baryon acoustic oscillation scale, a standard distance central to the universe's expansion. The study suggests current methods for measuring distance are more complicated than needed, offering a data-driven approach to cosmology.
Scientists have identified an atypical photon emission signal in X-rays from space that could be evidence of dark matter. The anomaly's distribution corresponds to expected patterns for dark matter, and further analysis confirms the findings.
Using supermassive black holes to measure cosmic distances provides precise distance measurements, removing uncertainty in calculating their mass. The new method shows that supermassive black holes are 40% heavier than previously estimated, fundamentally changing determinations of black hole masses.
Researchers suggest using shallow detectors on Earth's surface or in areas with low energy loss to detect dark matter signals. This approach aims to reduce background noise from cosmic radiation and increase the chances of detecting dark matter particles.
In 1966, Roger Penrose won the prestigious Adams Prize for his essay on space-time structure, while Steven Hawking received an auxiliary prize for his essay on singularities and spacetime geometry. These early awards laid the foundation for their later work on cosmology and black holes.
Scientists propose a novel method to detect dark matter using GPS satellites and atomic clock networks. The approach compares times from the clocks and looks for discrepancies, which could indicate the presence of dark matter.
Researchers analyzed CERN data and found no conclusive evidence that the discovered particle is the Higgs particle. Instead, they suggest it could be a light techni-higgs particle composed of two techni-quarks. This discovery raises questions about the existence of dark matter.
The POLARBEAR collaboration has made the most sensitive measurements yet of the cosmic microwave background's polarization, revealing telling twists called B-modes that indicate cosmic history imprints. These findings suggest a new regime in precision cosmology, paving the way for solving mysteries about matter and energy at the Big Bang.
A team of researchers, led by Tom Broadhurst, has reinterpreted cold dark matter as a Bose-Einstein condensate, proposing that it governs the formation of the universe's structure. The theory predicts galaxies formed relatively late and could explain puzzling cores in dwarf galaxies.
Researchers suggest that dark matter particles scattering with photons and neutrinos could explain the lack of small galaxies around the Milky Way. By tuning this interaction, scientists can learn more about dark matter's physics and its effects on galaxy formation.
The researchers mapped the velocities of galaxies throughout our local universe to define the region where each supercluster dominates. The Milky Way resides in the outskirts of the Laniakea Supercluster, which is 500 million light-years in diameter and contains 100,000 galaxies.
The Planck Telescope's most detailed map of the cosmic microwave background contains features that challenge the standard model of cosmology. By processing the data differently and including other effects, scientists have found that several anomalies disappear, but others may still persist.
An international team of researchers devises precise method for calculating galaxy masses using gravity and expansion data. The new study shows the Milky Way has only half the mass of its neighbor Andromeda.
Researchers at China's PandaX facility aim to detect direct evidence of dark matter interactions with xenon nuclei and observe double-beta decay. The new detector is designed to distinguish between nuclear recoils and electron recoils, with promising results from previous experiments like XENON100.
A team of researchers from the Niels Bohr Institute and Aarhus University discovered that cosmic dust grains can form through shock interaction during a supernova explosion. The grains can grow to sizes large enough to survive the violent shockwaves, providing insight into their origin.
New research opens up possibility that dark matter governs structure across whole universe, resolving puzzles in galaxy cores and formation timing. The theory suggests large stationary waves of dark matter called solitons could explain observed phenomena.
New supercomputer simulations show that most dark matter halos failed to form galaxies, with gas sterilized by the heat from first stars. The research improves understanding of dark matter, a mysterious substance believed to make up 85% of the universe's mass.
The BICEP2 collaboration has published nuanced findings on microwave sky patterns, suggesting possible primordial gravitational waves. However, they acknowledge the presence of galactic dust as a potential explanation for the signals.
Recent study finds satellite dwarf galaxies in the Milky Way and Andromeda do not behave as predicted by the standard model of galaxy formation. The galaxies are instead found in huge disks, moving in the same direction, like planets in our solar system. This mismatch raises concerns about the accuracy of the standard model of cosmology.
Researchers are using rare cosmic explosions called supernovae to measure dark energy, aiming to gain insights into its composition and impact on the universe. By studying these events, scientists hope to refine their understanding of this enigmatic force and its role in shaping the cosmos.
Researchers have made significant advancements in sensitivity and believe a dark matter particle interacts with ordinary matter rarely, according to conference discussions. The hunt for dark matter continues, with the LHC yet to find evidence of supersymmetry, but potential discovery could reveal dominant form of universe-seeding matter.
Theories predicting particles smaller than the Higgs particle are now more likely due to a critical review. Researchers found no new weaknesses in these theories.
Researchers say they've collected the first direct evidence for cosmic inflation, a cataclysmic event that marked the universe's birth. The team observed strong B-mode polarization signals in the cosmic microwave background, a signature of gravitational waves, confirming a deep connection between quantum mechanics and general relativity.
Researchers from BICEP2 collaboration announce groundbreaking discovery of cosmic inflation, providing first direct image of gravitational waves. The data also confirm a deep connection between quantum mechanics and general relativity.
A new approach converts weak microwave signals into visible light for clean detection and reduces noise by a thousand times. This all-optical detection method is the first to achieve this at room temperature.
Physicists Lawrence Krauss and Frank Wilczek suggest measuring minute changes in the cosmic background radiation could detect telltale effects of gravitons. They propose that gravitons exist as 'quantum fluctuations' during inflation, generating gravitational waves that affect CMB polarization.
Researchers from the Niels Bohr Institute detected a stream of stars in Andromeda II, revealing a remnant of a merged dwarf galaxy. The findings provide insight into the rare event of low-mass galaxy mergers, which are expected during galaxy formation.
A 1931 paper by Albert Einstein featuring a dynamic model of the universe has been re-examined, highlighting numerical errors and questionable calculations. The model, which includes a contraction phase, contrasts with the widely known expanding Einstein-de Sitter model.
Scientists have combined Planck spacecraft and gravitational lensing observations to accurately measure the mass of ghostly sub-atomic particles called neutrinos for the first time. The team finds that massive neutrinos can explain the discrepancies between cosmological results and observations of large-scale structures in the Universe.
New calculations confirm the universe may collapse, with a higher risk than previously thought. A phase transition in the Higgs field could lead to a violent process where particles become extremely heavy and the universe ceases to exist.
Astronomers have observed a monster gamma-ray burst in the relatively nearby universe, revealing a giant star with a mass 20-30 times that of the Sun and rapidly rotating. The burst was so powerful that it could be observed for several months, providing insights into the properties of the original star.
Researchers found iron concentration is uniform across Perseus Galaxy Cluster, indicating widespread dispersal of heavy elements in the early universe. The team attributes this to supernova explosions and active black holes, suggesting a period of intense cosmic activity.
Researchers analyzed X-ray telescope observations from the Suzaku satellite to study iron distribution in the Perseus cluster. They found that iron is spread evenly between galaxies, suggesting it was created at least 10-12 billion years ago through intense star formation and supernovae explosions.
Researchers have found that mature-looking galaxies existed 11.5 billion years ago, pushing back the timeline of galaxy formation by 2.5 billion years. This discovery confirms the Hubble Sequence, a classification system used to describe galaxy morphology, even at early stages of the universe's history.
Scientists at PTB successfully generated and investigated symmetry-breaking in ion Coulomb crystals, mirroring the early universe. The research enables the study of quantum phase transitions and complex system dynamics.
Researchers suggest the Higgs boson could help resolve the cosmological constant problem by introducing another background field that contributes an energy density matching the observed dark energy. This advance provides new insights into understanding dark energy's mysterious nature.
A new analysis of cosmic microwave background radiation data has taken the furthest look back in time, revealing an excess of radiation that may indicate the presence of primordial neutrinos or dark energy. The findings challenge current theories on the universe's early expansion history.
Researchers used single-cell genomics to identify 201 distinct microbial genomes, revealing unexpected metabolic features and resolving relationships within and between microbial phyla. The study provides a profound leap of understanding the microbial evolution on our planet.
A team of researchers studied an early galaxy using the ESO Very Large Telescope and Hubble Space Telescope, determining its size, mass, element content, and star formation rate. The study found that the galaxy contained a high proportion of heavier elements, similar to those in the centre and outer parts of the galaxy.
Cancer originates from a default genetic 'safe mode', where cells revert to an ancient programming, leading to uncontrolled proliferation. The theory suggests that cancer-causing genes are reactivated in adulthood due to triggers like chemicals or radiation, adding weight to the radical new idea.
The Planck space mission has released its most accurate map of the oldest light in the universe, revealing a slower expansion rate and less dark energy. The new data also provide insights into dark matter and normal matter contents, challenging current models.
The Planck observatory's first 15 months of data reveal that the universe is 100 million years older than previously thought, with more matter and less dark energy. Scientists used supercomputing at NERSC to create detailed maps of the relic radiation from the big bang.
The Planck satellite provides an unprecedented level of detail about the cosmic microwave background, confirming the standard model of cosmology at exceptional accuracy. Anomalies in the data suggest the Universe may be different on scales larger than those directly observable.
Researchers have discovered vigorous starbursts in young galaxies, indicating the universe produced stars much earlier than thought. The findings reveal a rate of star formation 1,000 times greater than today's Milky Way and provide new insights into the history of the universe.
Dr Hendrik Ulbricht's team will explore the theoretical possibility of conducting experiments to discover whether there is a limit to quantum theory or not. They aim to generate a quantum superposition state for nanoparticles using matter wave interferometry.
The U.S. Planck Team, led by NASA and DOE, generates a massive simulation suite using NERSC's resources to analyze the flood of data from the Planck mission. This allows for precise cosmology results, with 250,000 maps of the sky produced in just 1,000 realizations.
Astronomers used NASA's Hubble Space Telescope to determine the age of the oldest known star, HD 140283, which could be as old as 14.5 billion years. The new age estimate reduces measurement uncertainty, overlapping with the universe's age, and provides a precise calculation of the star's intrinsic brightness.
Recent supercomputer simulations on XSEDE provide new insights into the interaction between jets, accretion disks, and magnetic fields around black holes. The findings challenge the long-held simplistic view of these phenomena, revealing a more complex and dynamic relationship between the jet, disk, and gravitational forces.
A new study confirms that cosmic rays are born in the violent aftermath of supernovas, exploding stars throughout the galaxy. Protons make up 90% of these particles, which are accelerated by shock waves and then decay into gamma-ray photons with distinctive signatures.
The European Space Agency has selected NASA's Goddard team to join the Euclid mission, a space telescope designed to probe the mysteries of dark energy and dark matter. The project aims to explore the cosmic infrared background and provide insight into stellar and galactic populations in the early universe.
Irene Sendra's research proposes a dynamic, dark energy model that varies over time, consistent with observations of the universe's acceleration. She also unites dark energy and dark matter into a single component, achieving better results in her models.
A Type Ia supernova with a redshift of 1.71, dating back 10 billion years, has been detected using the Hubble Space Telescope's data by the Supernova Cosmology Project. This discovery provides valuable insights into the expansion history of the universe and the nature of dark energy.
Researchers at Max-Planck-Gesellschaft create an atomic gas that exhibits a negative Kelvin temperature, where particles possess high energies despite being thermally insulated. This phenomenon challenges traditional notions of heat and cold, with potentially groundbreaking implications for thermodynamics and quantum mechanics.
Davide Gaiotto has won a $100,000 New Horizons in Physics Prize for emerging work as a young researcher, while Stephen Hawking received a $3 million Fundamental Physics Prize for his path-breaking discoveries about black holes. Perimeter Institute congratulates its researchers on these major international awards.
The Gordon and Betty Moore Foundation has awarded a $2.1 million grant to the University of California at Berkeley's Berkeley Center for Cosmological Physics to advance dark energy research through the BigBOSS project. BigBOSS aims to study dark energy with unprecedented precision using revolutionary technologies.
Scientists at Penn State University developed a new paradigm for understanding the earliest eras of the universe, extending analyses to the Big Bang using loop quantum cosmology. The research reveals that fundamental fluctuations in space-time evolved into large-scale structures, challenging classical physics and inflationary theories.
Stephon Alexander, a prominent physicist at Dartmouth College, has received the Edward A. Bouchet Award for his work on theoretical cosmology and its impact on early universe studies. The award recognizes his efforts to promote diversity in physics research.
The U.S. Department of Energy's ESnet has deployed the world's fastest science network, serving national laboratories, universities, and research institutions at 100 gigabits per second. This upgrade accelerates discovery in fields like energy, climate science, and cosmology by enabling faster data sharing and analysis.
The BOSS survey maps quasars to study dark energy, revealing a new era of the universe's expansion history. By analyzing the Lyman-alpha forest, scientists can measure BAO and calibrate the rate of expansion.
Using data from NASA's Fermi Gamma-ray Space Telescope, scientists measured the most accurate amount of starlight in the universe and determined the extragalactic background light (EBL), also known as cosmic fog. The EBL is a fossil radiation field created by ancient starlight that continues to travel through the universe.