Articles tagged with Astrophysics
Researchers discovered that black hole jets exhibit surprising variability in x-ray emissions over short time scales, contradicting a long-held theory. This finding opens up new possibilities for understanding particle acceleration in these jets and potentially elsewhere in the universe.
The CALET team, including researchers from Waseda University, found that cosmic ray helium particles follow a Double Broken Power Law, indicating spectral hardening and softening in high-energy ranges. This deviation from expected power-law distribution suggests unique sources or mechanisms accelerating and propagating helium nuclei.
Astronomers from Stockholm University detected the first radio emission of a Type Ia supernova, providing evidence for helium-rich circumstellar material. The discovery sheds light on the origins of these explosions and their role in measuring the expansion of the Universe.
Astronomers have discovered an Earth-size exoplanet, LP 791-18 d, that may be covered in volcanoes. The planet's high volcanic activity could sustain an atmosphere and potentially support liquid water on its night side.
Saturn's rings are estimated to be 400 million years old, much younger than the planet itself, according to a new study. The researchers used dust analysis to determine the age of the rings, which are composed of ice and rocky material.
A team of researchers from the University of Minnesota has successfully measured the expansion rate of the Universe using data from a magnified supernova. Their findings provide new insight into the problem and bring scientists closer to obtaining the most accurate measurement of the Universe's age.
The explosion, known as AT2021lwx, is more than ten times brighter than any known supernova and has lasted for nearly three years, compared to most supernovae which are only visibly bright for a few months. The researchers believe that the explosion is a result of a vast cloud of gas being violently disrupted by a supermassive black hole.
A team of scientists at MIT and elsewhere have observed a star engulfing a nearby planet, a phenomenon that will also befall Earth in 5 billion years. The star's outburst was followed by a colder, longer-lasting signal, indicating the presence of gas from the star condensing into dust.
An international research team explores ultra-fast gas emissions from active galactic nuclei, which significantly change galaxy ecosystems. The study confirms the existence of these powerful emissions and their role in regulating star formation.
The Zhurong rover found evidence of liquid water on dune surfaces at low Martian latitudes, contradicting the widely held assumption that water can only exist in solid or gaseous forms. The discovery provides key observational proof and sheds light on the evolutionary history of Mars' climate.
Scientists identify tidal disruption event at infrared wavelengths, revealing the closest example of a black hole devouring a star. The discovery suggests that conventional X-ray and optical surveys may have missed similar events in young, star-forming galaxies.
Scientists at Lund University have found seven elements, including rare earth metal terbium, in the atmosphere of KELT-9 b, the galaxy's hottest exoplanet. The discovery was made possible by a new method developed to analyze exoplanets, which has opened up the possibility of studying their atmospheres in more detail.
Researchers used NASA InSight data to directly measure Mars' core properties, finding a completely liquid iron-alloy core with high percentages of sulfur and oxygen. This discovery provides new insights into Martian formation and geological differences between Earth and Mars, potentially impacting planetary habitability.
A machine learning technique called PRIMO has been used to reconstruct a sharper image of the M87 black hole using Event Horizon Telescope (EHT) data. The new image reveals more detailed information about the bright accreting gas and a larger, darker central region.
Researchers have discovered a tiny galaxy with big star power using the James Webb Space Telescope, providing new insights into the universe's early stars. The galaxy is one of the smallest ever discovered at this distance—around 500 million years after the Big Bang—and generated new stars at an extremely high rate for its size.
A UTSA-led research team has discovered a new exoplanet using indirect methods. The exoplanet, HIP 99770 b, is about 14 to 16 times the mass of Jupiter and orbits a nearly twice-as-massive star. This breakthrough opens a new avenue for scientists to discover and characterize exoplanets.
Astronomers have discovered a massive, runaway black hole that has left behind a never-before-seen trail of newborn stars. The black hole, weighing as much as 20 million Suns, is plowing into gas to trigger new star formation along a narrow corridor.
Researchers found consistent results between observations and theory, showing that clusters have become more centrally concentrated over time. The study provides strong support for the Lambda-CDM paradigm by demonstrating agreement between the observed and simulated concentration-mass relation of galaxy clusters.
The detection of GRB 221009A marks the most energetic gamma-ray burst ever observed, with a luminosity surpassing that of entire galaxies and hundreds of billions of stars. The event was followed up by space-based telescopes, including the James Webb Space Telescope, which provided insight into its properties.
Scholars developed an AI program using symbolic regression to improve mass inferences of galaxy clusters. The new equations extract jelly at the center and concentrate on doughy outskirts for reliable mass inferences.
Astrophysicists used AI to improve mass estimates of galaxy clusters by adding a simple term to an existing equation. The new equation downplays the importance of complex cores in calculations, providing more reliable mass inferences.
The ESO VLT observed the aftermath of the DART impact, showing that the ejected cloud was bluer than the asteroid itself, indicating fine particles. The team found no signs of ice or DART spacecraft propellant, but detected changes in light polarization suggesting altered surface composition.
The Fermi Gamma-ray Space Telescope has captured a dynamic animation of the gamma-ray sky, revealing frenzied activity over nearly 15 years. The data, now publicly available, includes records of source brightness changes and sheds light on blazars and multimessenger astronomy.
Researchers from ETH Zurich, Harvard, and Cambridge join forces to study chemical and physical processes of living organisms and environmental conditions for life on other planets. Synthetic cells enable scientists to deconstruct complex systems, understand basic principles of life and evolution.
Researchers at Osaka Metropolitan University used AI to create a detailed map of star birthplaces in the Milky Way Galaxy. The team identified 140,000 molecular clouds and estimated their distance, size, and mass with high accuracy.
Researchers at West Virginia University have developed a new theory that extends the first law of thermodynamics to systems not in equilibrium. This breakthrough has numerous potential applications across physics and other sciences, including studying plasmas in space and low-temperature plasmas.
An international team of astrophysicists has discovered six potential galaxies emerging in the universe's earliest moments, containing as many stars as the Milky Way. These ancient structures are gigantic and massive, contradicting current cosmological theory, with calculations suggesting they formed hundreds of new stars a year.
Scientists at Ohio State University have made a groundbreaking discovery, allowing them to view inside the deepest recesses of atomic nuclei. By studying how different types of particles interact with each other, they were able to map the arrangement of gluons within atomic nuclei with unprecedented precision.
A recent study has found that kilonovae explosions are shaped like perfect spheres, contradicting previous assumptions. The discovery may provide a new method for measuring the Universe's age, complementing existing methods and offering greater precision in distance measurements.
Researchers used machine learning to classify hundreds of thousands of X-ray objects, discovering thousands of new cosmic objects including black holes and neutron stars. This breakthrough establishes a state-of-the-art capacity for applying machine learning techniques in fundamental astronomy research.
Researchers found that kilonovae, caused by neutron star collisions, produce spherical explosions with symmetrical shapes. The discovery may provide a new key to fundamental physics and measuring the Universe's age.
The study reveals that 'similar' planetary systems are the most common type, followed by 'ordered' and then 'anti-ordered' systems. The researchers found that factors such as gas and dust disk mass and star abundance play a crucial role in determining system architecture.
Researchers found that a small molecule called ortho-benzyne can drive the chemical evolution of molecules in cosmic stellar nurseries. This discovery provides new insights into the complex chemistry happening in these environments.
The James Webb Space Telescope has identified the precise location of the 'engine' powering merging galaxy IIZw096, a bright and energetic source of light. The engine is responsible for up to 70% of the system's infrared emission and has a radius no larger than 570 light years.
Scientists discover first gamma-ray eclipses from spider star systems using Fermi data, calculating system tilt and pulsar mass. The discovery helps researchers measure pulsar masses, constraining physics within extreme environments.
Researchers from Waseda University measured the energy spectrum of boron and the B/C flux ratio in high-energy cosmic rays using the CALorimetric Electron Telescope. The results indicate a different spectral index for boron compared to carbon, with implications for our understanding of cosmic ray propagation mechanisms.
The James Webb Space Telescope has identified ice in deeper regions of interstellar molecular clouds, revealing unprecedented insights into the abundance of icy compounds. The team discovered complex organic molecules, such as methanol and potentially ethanol, suggesting that prebiotic molecules may be common in planetary systems.
Researchers from Bar-Ilan University have re-examined data on jet velocities and discovered that lower initial jet speed can explain perpetual emission, filling the gap between velocities. This finding changes the paradigm and proves that jets are formed in nature at all speeds.
Researchers report the discovery of photonic hopfions, a new family of 3D topological solitons with freely tunable textures and numbers. These structures exhibit robust topological protection, making them suitable for applications in optical communications, quantum technologies, and metrology.
Researchers observed a sudden slowing of the star's angular momentum, followed by three Fast Radio Burst-like radio bursts and a month-long episode of pulsed radio emission. The synchronicity of these events suggests an association between magnetar spin-down glitches and radio emissions.
The Butterfly Nebula's unique shape is caused by a second star orbiting the central star, creating wing-like lobes. New research reveals powerful winds are altering the material within these lobes, contradicting existing models of planetary nebulae formation and evolution.
Researchers used the Panchromatic Hubble Andromeda Treasury Triangulum Extended Region — or PHATTER — survey to study the Triangulum galaxy. The team discovered two drastically different structures depending on the age of the stars, with younger and older stars having distinct distributions.
Scientists have identified a new Earth-size world, TOI 700 e, orbiting within the habitable zone of its star, making it an exciting prospect for further study. The planet is likely rocky and might be tidally locked, offering insights into our solar system's history.
Researchers at the University of Washington have discovered a unique binary star system where a small companion star is surrounded by a large disk of dusty material. The companion star caused a seven-year-long eclipse of the main star, Gaia17bpp, which is one of the longest recorded eclipses.
Researchers have discovered a supernova with strong features of oxygen and magnesium, suggesting the explosion could be crashing into circumstellar matter formed around 1,000 days prior to the event. This finding provides new insights into the later stages of massive star life and creates challenges for current theories on star evolution.
Astronomers have discovered two ghostly Goliath black holes just 750 light-years apart, closing in on a cataclysmic meeting. The estimated population of merging supermassive black holes may be surprisingly high, generating strong gravitational waves detectable by future telescopes.
A team of astronomers discovered 87 galaxies that could be the earliest known galaxies in the universe using data from NASA's James Webb Space Telescope. This finding suggests a revision to our understanding of galaxy formation, indicating that more galaxies may have formed earlier than previously thought.
The UTSA-led Consortium on Nuclear Security Technologies (CONNECT) has received a five-year, $5 million grant from the U.S. Department of Energy's National Nuclear Security Administration. The program aims to educate and train the next generation of scientists and engineers in nuclear security, with a focus on underrepresented students.
The ERC Red Cardinal project aims to shed light on the mysterious phase of star formation extinction in massive galaxies. The team, led by Sirio Belli, will use James Webb Space Telescope observations to test a hypothesis predicting two distinct modes of stellar extinction.
Researchers used new data from the European Space Agency's GAIA space observatory to project the orbits of satellite galaxies into the past and future, revealing the plane form and dissolve in a few hundred million years. The findings remove one of the main objections to the validity of the standard model of cosmology.
The JWST's PEARLS project has unveiled stunning images of distant galaxies, providing new insights into the formation and evolution of galaxies. The team's data show evidence for giant black holes and interacting galaxies with active nuclei, shedding light on the processes that shape the universe.
Using supercomputers and machine learning, researchers created simulations of millions of computer-generated universes to test astrophysical predictions. The study found that supermassive black holes grow in the same way as their host galaxies, revealing a long-elusive relationship.
Researchers used 69 confirmed binaries to test two origin stories of black holes, but found that the current catalog is not enough to reveal anything fundamental about their formation. The study suggests that the universe's spin and tilt can be 'spun' in different ways depending on the model used.
Researchers discovered that 55 Cnc e orbits its star along the equator, unlike other planets in the system. This unique orbit likely formed when the planet fell toward its star over time, resulting in a scorching surface and interior with possible diamond formation.
The event challenged scientists' understanding of gamma-ray bursts (GRBs), which are the most powerful events in the universe. The burst's high-energy light and kilonova visible and infrared light were detected by NASA's Swift Observatory and Fermi Gamma-ray Space Telescope, providing new insights into how heavy elements are created.
Chinese astronomers have discovered that optical variability in emission-line galaxies (ELGs) is likely caused by star-formation activity rather than supermassive black holes. By analyzing images of ELGs from the COSMOS field, researchers found less than 3% show significant variability.
Astronomers have discovered a mysterious bright flash emanating from a relativistic jet of matter streaking out from a supermassive black hole. The signal, AT 2022cmc, is the brightest TDE ever detected and originates from a black hole that suddenly began devouring a nearby star, releasing an enormous amount of energy.
A study published in Nature Communications suggests that small asteroids are probably young because of their loose internal structure and low cohesion. This finding has important implications for understanding the geological development of asteroids.
Researchers used India's SARAS3 radio telescope data to place limits on the mass and energy output of the first stars and galaxies, determining what they were like and weren't. The study enabled them to rule out scenarios of inefficient heaters and efficient producers of radio emissions.
Scientists at Tel Aviv University have developed a method to create the thinnest possible ladder steps made of distinct electric potentials, which can be used as independent information units. The discovery enables the creation of novel devices with potential applications in electronics and optomechanics.