Articles tagged with Optical Astronomy
The Local Volume Mapper is capturing light to reveal the physics and chemistry of stellar birthplaces across vast expanses of the sky in unprecedented detail. Astronomers are analyzing specific spectral lines to map the precise temperature, density, chemical abundance, and motion of interstellar gas.
The study provides the largest, most uniform spectroscopic follow-up of X-ray sources ever assembled, capturing tens of thousands of X-ray-emitting galaxy clusters. It reveals that rapidly growing giant black holes were surprisingly common in the early Universe and more 'hidden' black holes have been uncovered.
A team of scientists has discovered 31 of the most ancient quasars ever found, including two that radiated light from a trillion suns when the universe was just 670 million years old. These findings provide crucial clues for understanding how supermassive black holes formed and offer insights into the early universe's structure.
A research team at Postech has developed a next-generation laser emission platform capable of precise color control under battery-level low voltage. The technology achieves ultra-high color purity and continuous spectral tunability within a single device, overcoming limitations of conventional display light sources.
Researchers created the highest resolution map of dark matter, showing its interaction with normal matter through gravity. The new data from NASA's James Webb Space Telescope confirms previous research and provides new details about dark matter's influence on the Universe.
A team of astronomers has discovered a supermassive black hole with extreme growth rates, contradicting current models. The black hole is emitting bright X-rays and radio waves, hinting at unknown physical mechanisms. This finding provides a rare glimpse into time-variable black hole growth in the early Universe.
Astronomers at Northwestern University have directly imaged a Tatooine-like exoplanet orbiting two suns, revealing unique insights into how planets form around multiple stars. The discovery provides an unprecedented look at the complex dynamics of binary systems and offers new opportunities to test theories of planet formation.
Two new research projects will bring advanced tools to Lick and McDonald Observatories, studying planet and star formation. The programs aim to extend the scientific reach of mid-sized telescopes, delivering new insights and demonstrating technologies for larger observatories.
Astronomers detect first-ever evidence of a 'planet with a death wish' as HIP 67522 b orbits extremely close to its host star, triggering flares that erode the planet's atmosphere. The radiation is so intense it causes the planet to shrink and lose mass at an alarming rate.
A team of Utah engineers has developed a large aperture flat lens that focuses light as effectively as traditional curved lenses while preserving accurate color. This technology could transform astrophotography imaging systems in space-constrained applications.
Researchers from the International Centre for Radio Astronomy Research have discovered a possible explanation for a rare and mysterious stellar event. By conducting a meta-analysis of existing data, they were able to identify key factors contributing to this phenomenon, shedding light on its underlying mechanisms.
The VST-SMASH survey captures new images of five galaxies showcasing their unique structures and assembly histories. The Italian National Institute for Astrophysics (INAF) at ESO Paranal observatory used the VST telescope to produce these glorious galaxy portraits.
The Dark Wolf Nebula, located 5300 light-years from Earth, is a cold cloud of cosmic dust that obscures the light of stars and other objects. The image, captured by the VLT Survey Telescope, showcases the nebula's ghost-like presence against a bright background, highlighting its unique features.
Researchers at Chalmers University of Technology have developed a system that uses a silent amplifier and record-sensitive receiver to pave the way for faster and improved space communication. The system opens up new communication opportunities in space, allowing for error-free data transmission over long distances.
The TESS mission has discovered a rare stellar triplet system with twin stars orbiting each other every 1.8 days, and a third star that circles the pair in just 25 days. The discovery sets a new record for the shortest outer orbital period of this type of system.
Researchers have observed the circumgalactic medium of a star-bursting galaxy 270 million light years away, revealing its vastness and influence on gas formation. The study provides new insights into galaxy evolution, how galaxies acquire gas, and where it goes.
A new study uses observations from NASA's New Horizons spacecraft to measure the cosmic optical background, a phenomenon known as the universe's glow. The results suggest that the glow is roughly 100 billion times fainter than sunlight and provides valuable insights into the history of the universe since the Big Bang.
Researchers studied Chang'e-5 samples to understand how solar wind irradiation and micrometeorite impacts form metallic iron nanoparticles, revealing distinct effects on size and optical properties. The study provides insights into lunar surface color variations and remote sensing measurements.
Astronomers at Macquarie University have successfully tested a new technique for observing celestial objects during the day using the Huntsman Telescope. The array of camera lenses can accurately measure stars, satellites, and other targets even when the Sun is high overhead, allowing continual monitoring of bright stars like Betelgeuse.
Astronomers using the JWST have created the deepest spectrum of a distant galaxy ever seen, revealing the presence of eight distinct elements including nickel. The study helps scientists understand how galaxies mature and evolve over time, with surprising findings on the chemical composition of ancient galaxies.
Astronomers combined the Webb and Hubble telescopes to capture a detailed portrait of the cosmos, revealing a galaxy cluster about 4.3 billion light-years from Earth. The image showcases magnified supernovae and individual stars, providing insights into the universe's first stars and the forces driving its expansion.
A global team has discovered the most ancient and distant fast radio burst, located 8 billion years ago, confirming that FRBs can be used to measure the 'missing' matter between galaxies. The source was found to be a group of merging galaxies, supporting current theories on the cause of fast radio bursts.
Astronomers have discovered a galaxy with a unique activity in its core, leading to a reclassification as a giant radio galaxy. The PBC J2333.9-2343 galaxy has a blazar at its center with jets that changed direction drastically by up to 90 degrees.
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.
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.
A team led by University of Maryland astronomer Igor Andreoni discovered a bright optical flare caused by a dying star's encounter with a supermassive black hole. The event, AT2022cmc, is extremely rare and was found using a novel data pipeline that analyzed the Zwicky Transient Facility survey.
Astronomers observe a star's destruction and discover that most of its material forms a spherical cloud, blocking high-energy emissions. The polarization of light from the event reveals symmetry in the cloud.
A team of astronomers discovered an unusual ultra-faint dwarf galaxy, Pegasus V, on the outer edge of the Andromeda Galaxy using NSF's NOIRLab facilities. The galaxy appears to be extremely deficient in heavier elements, indicating it is very old and likely a fossil of the first galaxies.
Astronomers have detected a white dwarf star that spins at an incredible rate of once every 25 seconds, completing one rotation faster than Earth. The star is thought to be the size of the Earth but massive enough to pull material from its companion star, creating a magnetic propeller system.
The new laboratory combines existing and new facilities, fostering innovative scientific programs, idea exchange, and creative development in ground-based optical-infrared astronomy. The lab enables breakthrough discoveries in astrophysics by developing state-of-the-art observatories and providing data products for a diverse community.
Astronomers can now automatically follow up on variable astronomical objects with a range of 0.4-meter to 8-meter telescopes, observing in UV light to infrared. The network uses automated software and generates dynamic observing schedules every 15 minutes.
Astronomer Daniel Wang will collaborate with Jorge Cuadra in Chile to study the massive black hole at the center of the Milky Way, aiming to understand its interactions with the galactic ecosystem. This research has significant implications for our understanding of galaxy-wide properties and astrophysical processes.
An amateur astronomer in Argentina captured the rare first optical light from a massive exploding star, providing valuable insights into the supernova explosion and the star's physical structure. The discovery was made using a new camera and allowed scientists to determine the type of star that exploded and the nature of the explosion.
Astronomers capture unique data on a Type IIb supernova using amateur photographs, providing insights into the physical structure of the star and the nature of the explosion. The discovery sheds new light on the type of stars that explode and the physics behind massive stellar collapses.
Astronomers observed unprecedented nova images that show the expanding thermonuclear fireball is more complicated than predicted. The research collaboration measured the nova on 27 nights over two months using CHARA's high-resolution telescopes, revealing an ellipticity of 13% and a rapid expansion rate of over 600 km/s.
The NIST/CU laser frequency comb has been used to calibrate measurements of starlight from stars other than the Sun, achieving precision comparable to established techniques. This technique may help detect Earth-like planets, which are hard to detect with conventional technology.
Astronomers used Chandra X-ray Observatory to discover massive black holes growing more aggressively than thought, in tandem with host galaxies. The study suggests that these young black holes are related to quasars and could have played a role in clearing cosmic fog.
A team of researchers led by UC Riverside astronomer Gillian Wilson has completed the largest ever survey of very distant galaxy clusters. The SpARCS survey detects galaxy clusters using deep optical observations and infrared data from the Spitzer Space Telescope, revealing about 200 new cluster candidates.
A two-hour observation using Multi-Conjugate Adaptive Optics (MCAO) system revealed changes in Jupiter's smog-like haze over the past three years, likely due to a planet-wide upheaval. The images show a major alteration in the brightness of the equatorial haze, indicating an increase in haze or its movement to higher altitudes.
The NASA-NOAO partnership will facilitate major discoveries by enabling simultaneous observations of objects in vastly different regions of the electromagnetic spectrum. This agreement streamlines the approval process, allowing researchers to submit one peer-review proposal for funding from GLAST and observing time on NOAO telescopes.
Scientists have successfully observed an optical coronal line from iron ions in a star called CN Leonis, located 8 light-years away. This achievement marks the first time such a detection has been made outside of our solar system and opens up new avenues for studying stellar cycles.
A team of astronomers has found convincing evidence for a key tenet of the three-phase model of the interstellar medium. The study of a supernova remnant in the Large Magellanic Cloud reveals the features of evaporating gas and shocked cloudlets, supporting the theory.
Astronomers have found evidence that small, evaporating ice particles in the tail and surrounding the nucleus of comet Hyakutake are responsible for most of the water and other gases seen from Earth. The discovery provides new insights into how comets survive orbits around the sun without being wasted away by solar radiation.