Articles tagged with Galaxies
Astronomers used ALMA to observe a galaxy with young, powerful jets ejected from a supermassive black hole. The team found clear evidence of disrupted gaseous clouds impacted by the jets' high speeds, providing insight into the evolutionary process of galaxies in the early Universe.
New study reveals that simultaneous X-ray and gravitational wave observations of supermassive black hole collisions will provide unprecedented insights into cosmic events. The European Space Agency's Athena and LISA missions, set to launch in the 2030s, will enable astronomers to study these phenomena in detail.
Astronomers have identified overlapping bubbles of hydrogen gas ionized by the stars in early galaxies, providing direct evidence for the reionization of the universe. The earliest detected stars formed around 680 million years after the Big Bang and began to light up the cosmic dark ages.
The Hubble Space Telescope has studied the gamma-ray burst GRB 190114C, emitting record-breaking energy of 1 TeV. Scientists observed this extremely high-energy emission from a collapsing star at nearly 99.999% of the speed of light, providing new insights into gamma-ray bursts and their environments.
The study reveals the location of the most energetic outburst ever seen, sitting in a dense environment within a bright galaxy 5 billion light years away. The high-energy radiation was produced by a collapsing star at nearly the speed of light, creating a shock that triggered the gamma-ray burst.
A $3.5 million NSF grant will enhance Galaxy's compatibility with GPUs, improving its speed and functionality. The goal is to reduce scientific discovery time from hours to minutes and seconds.
Physicists use two types of measurements to calculate the universe's expansion rate, but their results don't coincide. The Hubble constant value differs by 7% between late and early Universe measurements.
A team of Clemson University astrophysicists has devised a new measurement of the Hubble Constant, which describes the rate of expansion of the universe. Their analysis of data from orbiting and ground-based telescopes yields a measurement of approximately 67.5 kilometers per second per megaparsec.
Researchers detected individual filaments of intergalactic gas in a newly forming cluster, providing insight into the Universe's evolution and galaxy formation. The analysis found that these filaments are arranged like long threads, extending over one million parsecs, and fueling star formation and super massive black hole growth.
Researchers simulated galaxy formation in a 'fuzzy' universe, where dark matter is ultralight and quantum-waves-like. The simulation suggests galaxies would form in extended filaments with striated patterns, potentially illuminating the type of dark matter present today.
Astronomers have discovered the oldest known galaxy protocluster, z66OD, with 12 galaxies existing 13.0 billion years ago. One of these galaxies is Himiko, a giant object found previously by the Subaru Telescope, which was unexpectedly located on the edge of the protocluster.
Scientists have developed a new technique for measuring the expansion of the universe using gravitational lensing, which yields a somewhat higher Hubble Constant value compared to standard measurements. The method provides a valuable alternative approach to addressing the long-standing discrepancy in the Hubble Constant's value
A team of researchers used innovative approaches to calculate the mass of neutrinos, setting an upper limit for the lightest species for the first time. They combined data from various sources, including galaxy observations and particle accelerator experiments, to arrive at a maximum possible mass of 0.086 eV.
A Yale-led team of astronomers has simulated a large patch of the intergalactic medium (IGM), revealing how cold, dense gas clouds organize themselves within larger sheets or pancakes of matter. The findings suggest that these gas clouds can be pristine and metal-free, challenging previous assumptions about their formation and composit...
Researchers have developed ultra-sensitive light-detecting systems that can view galaxies and planetary systems in superb detail. The system works at room temperature, unlike current technology which requires extremely low temperatures.
A new study has developed a method to measure the cosmic expansion with greater precision, utilizing galaxy voids and accounting for distortions caused by dark energy and curvature. The results agree with the simplest model of a flat universe and tighten constraints on alternative theories.
A team of researchers has found a balance between hot gas, stars, and other materials in galaxy clusters. The study validates the prevailing cold dark matter theory and provides insight into the relationship between ordinary matter and dark matter.
Two giant galaxy clusters are caught in the act of colliding for the first time, providing valuable insights into the formation of large-scale structures. The clusters' merger shock wave is expected to have a significant impact on the evolution of galaxy clusters and cosmic structure.
Rachel Mandelbaum, a Carnegie Mellon professor, was awarded the Simons Investigator program to study cosmic distortions and dark matter. She develops algorithms to analyze galaxy relations with dark matter halos.
A team of researchers from Instituto de Astrofísica de Canarias solved the mystery of a galaxy without dark matter by reevaluating its distance. The galaxy was previously estimated to be 64 million light years away, but new measurements reveal it's actually around 42 million light years from Earth.
Researchers create most detailed simulation of black hole, proving theoretical predictions about accretion disks. The inner-most region of an accretion disk aligns with its black hole's equator, solving a longstanding mystery from 1975.
Researchers have developed a new filter to better map the dark universe, cutting through galaxies' messy emissions to provide clearer windows into dark matter and dark energy. The new method uses shearing effects to reduce errors and provides more accurate measurements.
Astronomers created a comprehensive 'history book' of galaxies using 16 years' worth of Hubble observations, covering 265,000 galaxies that stretch back 13.3 billion years. The new image mosaic provides a wide portrait of the distant universe, chronicling galaxy assembly over time.
A team of international astronomers, including UNLV's Bing Zhang, has discovered a new way to spot neutron star mergers using a bright X-ray burst detected by NASA's Chandra X-ray Observatory. The observation validated predictions made in 2013 and provided a rare glimpse into how neutron stars are formed.
A team of international astronomers, including those from the University of Massachusetts Amherst, have successfully captured the first direct image of a supermassive black hole's event horizon. The image reveals the black hole at the center of Messier 87, a massive galaxy 55 million light-years from Earth.
Dr Clare Dobbs' research will focus on the formation and evolution of young massive star clusters, a crucial aspect of understanding galaxy formation. The five-year project aims to tackle the puzzle of how stars develop in densely packed regions of space.
Astronomers have found a way to illuminate the elusive nature of dark matter by analyzing intracluster light from six massive galaxy clusters in the Frontier Fields program. The faint glow between galaxies in a cluster traces the path of dark matter, providing a more accurate understanding of its distribution.
Astronomers have developed a revolutionary method to detect dark matter using faint starlight in Hubble images. The technique accurately studies the distribution of dark matter and has been confirmed in galaxy clusters. Future studies will survey more clusters and analyze additional data with the James Webb Space Telescope.
A team of UC Riverside-led scientists have made the best measurement yet of why star formation stops in galaxy clusters in the early universe. They found that it takes a galaxy longer to stop forming stars as the universe gets older, with quenching timescales varying across 70 percent of the universe's history.
Researchers used supercomputers to simulate early universe, revealing formation of first stars and galaxies. Metal-enriched gas enabled rapid star formation, leading to smaller, more numerous stars and galaxy evolution.
A study from the University of Bonn confirms that galaxy clusters formed too slowly than expected, potentially requiring a rework of current theories. The researchers will analyze their data in greater detail to confirm whether the standard model needs to be revised.
Astronomers using MUSE instrument on ESO's VLT detected an unexpected abundance of Lyman-alpha emission in the Hubble Ultra Deep Field region, covering nearly the entire field of view. This discovery suggests that almost all of the sky is invisibly glowing with Lyman-alpha emission from the early Universe.
The study uses tiny gravitational distortions to measure the lumpiness of dark matter in the universe. The researchers find that the new observations are consistent with the simplest model for dark energy, but more data are needed to confirm the results.
A simulation by Georgia Institute of Technology researchers suggests that direct collapse black holes (DCBH) would produce specific kinds of intense radiation, including X-rays and ultraviolet emission. They also predict the formation of massive metal-free stars, a finding unexpected at first but making sense in hindsight.
Chris Carr, an Ohio undergraduate, discovered a new galaxy 37 million lightyears away using deep sky images from the Burrell Schmidt telescope. The detection is part of the Leo I galaxy group and is considered the lowest surface brightness object ever detected via integrated light.
Astronomers using NASA's NuSTAR satellite have revealed that binary star system Eta Carinae is capable of creating cosmic rays. The team observed the system and found evidence of a collision between the two stars' stellar winds, which forms shock waves and accelerates particles to nearly the speed of light.
Researchers used the Keck Cosmic Web Imager to examine Q2343-BX418, a young galaxy about 10 billion light years away, providing insights into its gas halo and its role in star formation. The study suggests that the galaxy's surrounding gas is giving off a specific type of light, offering clues to its evolution.
A new online training platform is being developed to address the lack of bioinformatics and statistics knowledge among researchers in the life sciences. The Galaxy Europe project aims to provide interactive tutorials using real datasets, aiming to improve data science methods use.
Researchers Corey Howard, Ralph Pudritz and William Harris use supercomputer simulations to re-create star cluster formation. The study shows that massive star clusters are the natural outcome of large gas collections, and can be used to reverse-engineer galaxy conditions.
An international team confirms Albert Einstein's general theory of relativity by making the most precise test of gravity outside our solar system. By combining data from NASA's Hubble Space Telescope and the European Southern Observatory's Very Large Telescope, the researchers found that gravity behaves as predicted by GR on galactic s...
A team of researchers using the Herschel Space Observatory, APEX antenna, and ALMA interferometer discovered a cluster of galaxies in deep space when the universe was only 1,500 million years old. This finding challenges current theories on galaxy formation and evolution.
A team of international astronomers has detected oxygen in a galaxy 13.28 billion light-years away, revealing that stars formed at an unexpectedly early stage in the universe's history. The discovery provides insight into the formation of galaxies and sheds light on the 'cosmic dawn' era.
Astronomers discover faint signal of oxygen in galaxy MACS1149-JD1, which is 13.28 billion light-years away and contains chemical maturity that suggests stars were forming as early as 250 million years after the Big Bang. This detection pushes back our understanding of cosmic dawn and the earliest phases of star formation.
Astronomers detected a faint signal of oxygen 13.28 billion light-years away using ALMA, indicating mature star formation in a young galaxy. The observation suggests stars formed 250 million years after the Big Bang.
An international team of astronomers used ALMA to observe a distant galaxy called MACS1149-JD1, detecting ionised oxygen emitted 13.3 billion years ago. This signal indicates that even earlier generations of stars existed in the galaxy, pushing back the frontiers of the observable Universe.
An international team found a fundamental law regulating galaxy cluster growth using gravitational lensing data from NASA's Hubble Space Telescope and Subaru Telescope. The law indicates that clusters are still growing by drawing surrounding substances with their strong gravity.
The Hubble Space Telescope has imaged a massive galaxy cluster, revealing its intricate structure and the presence of dark matter. The cluster is comprised of thousands of galaxies held together by gravity, with most of its mass existing in non-luminous dark matter.
Scientists decoded faint distortions in the universe's earliest light to reveal huge tubelike structures known as filaments, serving as superhighways for delivering matter to dense hubs. The study provides new insights into the formation and evolution of the cosmic web, including dark matter.
Astronomers have captured the most distant normal star ever observed, 9 billion light years away, using gravitational lensing. The blue supergiant was magnified over 2,000 times and is hundreds of thousands of times brighter than our Sun.
Astronomers have discovered the most distant star ever observed, existing only 4.4 billion years after the Big Bang, using gravitational lensing with the Hubble Space Telescope. The light from the star was magnified 2000 times, allowing for its detection.
Astronomers have discovered a new material that could directly detect dark matter particles, expanding the search scope to unexplored mass ranges. The material detects electrons recoiling from collisions with dark matter particles and operates near absolute zero.
Researchers use an easy-to-use, open-source Galaxy workflow to analyze gene families across species. The GeneSeqToFamily workflow removes complex prerequisites and is customizable, making it accessible to biologists unfamiliar with Compara.
A team of researchers has created a comprehensive dark matter map, indicating inconsistent halos with the standard cosmological model. The findings could hold new clues to understanding the accelerating expansion of the Universe.
A team of researchers validated theoretical predictions about the initial evolution of stellar explosions using data from a rare supernova captured by an amateur astronomer. The study found that the rapid brightening rate and low luminosity of SN 2016gkg supported models predicting shock emergence during the explosion.
Astrophysicists at UChicago used laser experiments to verify the turbulent dynamo theory, explaining the generation of cosmic magnetic fields. The study confirmed that turbulent plasma can amplify a weak magnetic field to strengths observed in stars and galaxies.
A new study by UTSA professor Chris Packham and colleagues reveals weaker-than-expected magnetic fields around a black hole, contradicting previous models. The findings shed light on the complex relationship between black holes and galaxies, hinting at a deeper understanding of these cosmic phenomena.
The largest X-ray galaxy cluster ever discovered contains the mass of three million billion suns and is composed of two colliding clusters, with most mass hidden in dark matter. Hubble's observations also show that the hot gas is being torn from the dark matter during the collision.
The Wide Field Infrared Survey Telescope (WFIRST) will generate never-before-seen big pictures of the universe, enabling astronomers to explore mysteries like dark energy and galaxy evolution. The mission will also discover thousands of exoplanets, including rocky planets in the habitable zone.
Emission line galaxies, or cosmic lanterns, help us understand the composition and fate of the Universe. These galaxies show strong emission lines from heated gas, allowing precise distance determination and insight into galaxy formation and evolution.
Astronomer Jeyhan Kartaltepe is leading a team that will use the James Webb Space Telescope to study the formation of the universe's first galaxies. The Cosmic Evolution Early Release Science Survey will provide detailed information about galaxy structures and physical conditions.