Articles tagged with Radio Telescopes
Researchers assessed ATT12's observational capabilities and found it could detect distant galaxies, identify dusty star-forming galaxies, and study galactic gas density. The telescope is planned for construction in Antarctica's dry conditions.
Astronomers have discovered a new millisecond pulsar named PSR J1810−0623, featuring an exceptionally circular orbit. This discovery provides valuable information about binary evolution processes and the Galactic magnetic field structure.
Researchers from Kyushu University used ALMA to observe a baby star producing a giant ring of gas about 1,000 au in size, which helps the star release excess energy. The team found that this ring is slightly warmer than its surroundings and hypothesize it's produced through magnetic field threading.
Astronomers have discovered that black holes don't just consume matter — they manage it. Researchers found that black hole binary systems switch between powerful jets and energetic winds—never producing both simultaneously—and both types of outflows carry away comparable amounts of mass and energy.
Astronomers detect a distant galaxy with temperatures of 90 Kelvin, indicating an extreme star factory that could have produced stars at a rate 180 times faster than the Milky Way. This discovery provides insight into how galaxies formed quickly in the early universe.
Researchers at WVU are enhancing the calibration of radio telescopes to measure dark energy by analyzing the '21-centimeter signal' from neutral hydrogen atoms. This technique aims to improve the ability of radio telescopes to detect large-scale structures in the universe, such as galaxy clusters and voids.
Researchers pinpointed the location of the brightest fast radio burst (FRB) ever recorded, RBFLOAT, to a single spiral arm of a galaxy 130 million light-years away. The precision was achieved using the CHIME/Outrigger array, allowing scientists to explore the environment and potentially shed light on the nature and origins of these mys...
A new computer model simulates magnetism and turbulence in the interstellar medium, providing unprecedented detail on the Milky Way Galaxy's overall magnetic field. The model also helps understand star formation and the propagation of cosmic rays, offering insights into astrophysical phenomenon.
Planetary scientists confirmed that Jupiter's mushball hailstorms occur due to unmixing of ammonia and water in the upper atmosphere. The storms are accompanied by fierce lightning and can punch through shallow weather systems, challenging long-held assumptions about gas giant atmospheres.
Scientists use FAST to analyze FRB 20201124A and discover 90% circular polarization, a record high. The findings contradict theoretical models, suggesting pulsar-like mechanisms may be more plausible.
Researchers have discovered that radio pulses lasting seconds to minutes are due to two stars coming together, rather than emissions from a single star. The study used a novel imaging technique to detect periodic radio signals in data taken with the Low Frequency Array (LOFAR), an international radio telescope.
Astronomers at Brown University have created a new method to pinpoint and filter out unwanted radio frequencies, crucial for preserving high-quality observations in the face of increasing satellite activity. By combining near-field corrections and beamforming techniques, researchers successfully tracked an airplane transmitting a telev...
A new Australian-developed technology has detected mysterious fast radio bursts and neutron stars, improving location data of pulsars. The system, CRACO, sifts through signals from space like sand on a beach to find anomalies.
Researchers used a new method to precisely locate a fast radio burst, finding it in the outskirts of an old elliptical galaxy. This discovery raises questions about how energetic events occur in regions without new star formation, and challenges existing theories about FRB origins.
A landmark survey has imaged exocomet belts around 74 nearby stars, revealing their structure and location. The study provides new insights into the evolution of planetary systems, including the existence of large, undetectable planets that affect the distribution of pebbles in these systems.
The Event Horizon Telescope has taken detailed measurements of a galaxy's supermassive black hole and its powerful jets. The research reveals strong magnetic fields close to the event horizon and estimates their strength, consistent with previous estimates.
Researchers, including WVU astronomer Emmanuel Fonseca, use radio pulsars to detect gravitational waves generated by massive objects. The study will merge data from the Green Bank Telescope and CHIME radio telescope to achieve full coverage of each wave, revealing information about phenomenon and objects in distant galaxies.
A new study analyzing data from the Canadian Hydrogen Intensity Mapping Experiment (CHIME) found that non-repeating FRBs appear to come from galaxies with modest densities and magnetic fields. This contradicts previous studies focused on repeating FRBs, suggesting a separate population or evolved versions of the same population.
Astronomers have detected a neutron star spinning at an unprecedentedly slow rate, defying the typical mind-bending speeds of these ultra-dense stars. The object emits radio signals every 54 minutes, offering new insights into its complex life cycle and potential implications for our understanding of stellar objects.
Scientists have discovered six high-redshift galaxies using the FAST telescope, finding significantly more atomic hydrogen gas than previously surveyed galaxies. This reveals that galaxies four billion years ago had more star-forming gas than current-day galaxies, challenging previous assumptions.
Researchers at Kyushu University discovered that baby stars expel plumes of dust, gas, and electromagnetic energy in a phenomenon called 'interchange instability', releasing magnetic flux within the protostellar disk. This finding sheds new light on how baby stars develop and may be crucial for understanding star formation.
Researchers analyzed over 3,000 CSO candidates and found that these galaxies host supermassive black holes with compact jets that extend up to 1,500 light-years. The team concludes that CSOs have relatively short lifetimes of 5,000 years or less, fueled by tidal disruption events (TDEs) triggered by massive star consumption.
Researchers found an unknown object orbiting a rapidly spinning millisecond pulsar, weighing more than the heaviest neutron stars and less than the lightest black holes. The discovery was made using the MeerKAT Radio Telescope and could reveal new insights into black holes and neutron stars.
Researchers have produced the most sensitive radio image ever of a globular cluster, capturing detailed information about tightly-packed stars. The imaging technique allowed for unprecedented views of the cluster's central compact radio source and surrounding stellar environment.
Researchers developed a machine learning technique to identify superluminous galaxies with massive black holes at their core. The algorithm predicts intense radio signals from these galaxies, which could provide insights into the physical phenomena of the early Universe.
A team of researchers confirmed the spin of a black hole in galaxy M87 by analyzing data from 2000-2022, showing an 11-year cycle in its jet's precessional motion. The findings provide evidence that the black hole spins, enhancing our understanding of supermassive black holes.
Researchers from Queen's University have identified two potential polar ring galaxies using data from the CSIRO's ASKAP radio telescope. The discovery suggests that these rare clusters might be more common than previously believed, with implications for our understanding of galaxy evolution and dark matter research.
Researchers detected distinct 'dwarf pulses' from PSR B2111+46 using the Five-hundred-meter Aperture Spherical radio Telescope. These narrow, weak pulses exhibit a rare reversed spectrum and are produced by one or a few particles generated by pair production in a fragile gap of the pulsar's magnetosphere.
An international team of scientists reported on a radio pulsar phase from a Galactic magnetar, revealing unique emission mechanisms for 'bursts' and 'pulses'. The study provides clues to the formation theory of fast radio bursts.
An international team of scientists has detected a quasi-periodic oscillation (QPO) signal in the radio band from a Galactic black hole system, revealing features that have never been seen before. The QPO signal may provide the first evidence of activity from a jet launched by a Galactic stellar-mass black hole.
A team of astronomers using the James Webb Space Telescope has detected complex organic molecules in a galaxy over 12 billion light-years away. The discovery suggests that the presence of these molecules does not necessarily indicate star formation, contradicting a long-held assumption.
Researchers from McGill University have discovered 25 new sources of repeating fast radio bursts (FRBs), bringing the total number of confirmed FRB sources to 50. This new study uses a novel statistical tool to confirm the repetition of these mysterious phenomena, shedding light on their origins.
A team at Aalto University captured the first-ever image of a supermassive black hole and its associated jet using Event Horizon Telescope technology. The successful image revealed insights into the environment around black holes and their role in shaping galaxy evolution.
Astronomers have captured new images of M87*, revealing a thicker, fluffier ring that is 50% larger than the initial image. The team detected plasma from an accretion disk and observed a relativistic jet blasting out from the black hole.
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.
The HERA team has improved the sensitivity of a radio telescope, allowing them to detect radio waves from the cosmic dawn era. The data suggests that early galaxies contained few elements besides hydrogen and helium, unlike modern galaxies.
Researchers from Shanghai Astronomical Observatory detect radio recombination lines of carbon and oxygen ions for the first time, using the TianMa 65-m Radio Telescope. The discovery allows for accurate measurement of element abundances and has significant implications for studying interstellar chemistry and molecular formation.
The Hydrogen Epoch of Reionization Array (HERA) team has doubled the sensitivity of its radio telescope array, providing clues to the composition of stars and galaxies in the early universe. The data suggest that early galaxies contained few elements besides hydrogen and helium.
Researchers have detected a radio signal from atomic hydrogen in an extremely distant galaxy at redshift z=1.29, marking the largest distance so far. The signal was amplified by gravitational lensing, allowing the team to observe the galaxy's atomic hydrogen mass, which is almost twice its stellar mass.
Researchers detect radio signal from record-breaking distance galaxy, measuring gas composition and gaining insights into the early universe. The signal was amplified by a factor of 30 using gravitational lensing, allowing scientists to study a previously inaccessible region.
The ngVLA prototype antenna design has passed an intensive review, allowing for its manufacturing and testing. The design meets requirements and is considered mature enough for mass production, with some minor items needing additional work.
An international team of scientists observed the narrowing of a quasar jet for the first time using a network of radio telescopes. The results suggest that the jet's narrowing is independent of the host galaxy's activity level, providing an important clue to understanding jet formation.
The Tianma 65-m radio telescope helped detect over 600 emission lines in the Orion Kleinmann–Low Nebula, including 21 new species. High-Δn RRLs and complex organic molecules like NH3 were also identified, providing valuable insights into the region's physical and chemical properties.
Astronomers have discovered a rare system featuring a black hole spewing a jet at a neighboring galaxy, providing insights into radio jet feedback and its impact on star formation. The unique nature of RAD12 has allowed researchers to study the interaction between the black hole's jet and the companion galaxy.
Astronomers were surprised to find that a black hole is ejecting material at half the speed of light nearly three years after shredding a nearby star. The delayed outflow challenges scientists' understanding of black hole feeding behavior, with one researcher likening it to a 'black hole burping'.
Researchers using FAST monitored FRB 20201124A for two months, detecting nearly 2,000 radio bursts with polarization information. The study reveals a complex, dynamically evolving magnetized environment surrounding the FRB source, with features such as irregular Faraday rotation and oscillations in polarization.
A team of astronomers has developed a novel way to observe the first stars and galaxies, detecting light through the fog of the early Universe. The Square Kilometre Array will likely make images of the earliest light, but current telescopes struggle to detect the cosmological signal through hydrogen clouds.
Researchers have detected a persistent radio signal from a far-off galaxy that repeats every 0.2 seconds in a clear periodic pattern, similar to a heartbeat. The source of the signal is unknown but may be related to a radio pulsar or magnetar, which could provide an astrophysical clock for measuring the universe's expansion.
Scientists have discovered a repeating Fast Radio Burst (FRB) with a compact source of weaker but persistent radio emission, raising new questions about the nature of these mysterious objects. The discovery challenges the usefulness of FRBs as tools for studying intergalactic space.
Astronomers have been searching for low-frequency gravitational waves by monitoring pulsar pulses, but now NASA's Fermi Gamma-ray Space Telescope can also be used to detect these waves. The satellite's high-energy light provides a clearer view of pulsars and offers an independent method to detect gravitational waves.
Astronomers have discovered fast radio bursts originating from a globular cluster in the spiral galaxy M 81, surprising scientists with this unexpected location. The source of these unpredictable flashes has been pinpointed to old stars, contrary to previous discoveries which often occurred near young stars.
Researchers have discovered a source of fast radio bursts in the vicinity of galaxy M81, adding to the ongoing mystery surrounding these enigmatic events. The findings suggest that magnetars, highly magnetized neutron stars, may be responsible for generating FRBs, but further study is needed to fully understand this phenomenon.
Researchers at the University of New Hampshire have made a groundbreaking discovery about the origin of lightning using radio telescopes. They found that the sources of lightning are indeed the streamers, or tiny spark-like discharges, supporting one of two competing theories on how lightning begins.
A team of astrophysicists has discovered a new method to measure the cosmic microwave background radiation's temperature at an early epoch of the universe. By observing HFLS3, a massive starburst galaxy, they found a cold water cloud that casts a shadow on the microwave radiation, revealing the Big Bang's relic temperature.
A team of international researchers challenged Einstein's theory of general relativity using pulsars as a cosmic laboratory. They detected new relativistic effects, including light deflection and time dilation, with unprecedented precision. The study provides significant insights into gravity theories and the fundamental forces of nature.
Using Arecibo's observations of nearby galaxies, researchers have found that the relationship between a galaxy's mass and rotation speed is not as straightforward as previously thought. The study provides a constraint for future researchers to develop theories on how galaxies evolve.
A team of astronomers discovered eight new stars and three more previously known stars belonging to the rare 'Main-sequence Radio Pulse emitters' (MRPs) using the GMRT. These discoveries suggest that MRPs may be more common than thought, but are difficult to detect due to their radio pulses being visible only at certain times.
Dr. Sofia Sheikh has been awarded a Mathematical and Physical Sciences Ascending Postdoctoral Research Fellowship to focus on fast radio bursts and develop improved technosignature detection methods. She will also mentor underrepresented students in physics and astronomy, leveraging the Allen Telescope Array's unique qualities.
The Next Generation Very Large Array (ngVLA) will be a key tool for answering important scientific questions in astrophysics, offering sensitivity and resolving power 10 times greater than the current VLA. Construction could begin by 2026 with early scientific observations starting in 2029.
Researchers have discovered a remnant radio galaxy in Abell2065, providing insights into the dying phase of active galaxies. The discovery showcases the capability of upgraded GMRT to detect such objects, shedding light on their dynamics and evolution.