A study using the James Webb Space Telescope found that supermassive black holes can suppress star growth not only in their host galaxy but also in neighboring galaxies within a million-light-year radius. This discovery reveals a larger impact of quasars on galaxy evolution, contradicting previous assumptions.
SourceUniversity of Arizona·JournalThe Astrophysical Journal Letters·TypeObservational study·DateFeb 16, 2026
An international team of astronomers has discovered 49 new gas-rich galaxies, expanding our understanding of the universe. The detection was made possible by the MeerKAT radio telescope in South Africa, which allowed for rapid identification of HI-rich galaxy groups.
SourceInternational Centre for Radio Astronomy Research·JournalMonthly Notices of the Royal Astronomical Society·DateMar 25, 2024
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.
SourceFaculty of Sciences of the University of Lisbon·JournalAstronomy and Astrophysics·DateDec 6, 2023
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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.
SourceChinese Academy of Sciences Headquarters·JournalNature·DateSep 27, 2023
An international team of scientists has produced an image showing both the ring-like accretion structure around a black hole and the associated relativistic jet. The study provides new insights into the connection between the accretion flow near the central supermassive black hole and the origin of the jet.
SourceChinese Academy of Sciences Headquarters·JournalNature·DateApr 26, 2023
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.
SourceRoyal Astronomical Society·JournalMonthly Notices of the Royal Astronomical Society·DateMar 21, 2023
Scientists discovered that the galaxy stopped forming stars because most of its gas fuel was thrown out of the system as it merged with another galaxy. The result is a first for ALMA scientists and challenges long-held theories about galaxy mergers and deaths.
SourceNational Radio Astronomy Observatory·JournalThe Astrophysical Journal Letters·DateAug 30, 2022
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A Northwestern University study reveals that X-shaped radio galaxies can form through a surprisingly simple process. The simulation, which tracked galactic gas far from the supermassive black hole, found that the galaxy's characteristic X-shape resulted from interaction between jets and infalling gas.
SourceNorthwestern University·JournalThe Astrophysical Journal Letters·TypeComputational simulation/modeling·DateAug 29, 2022
The FAST HI survey has discovered 544 HI-detected galaxies, including 16 that have no optical counterparts, sparking interest in galaxy formation theory. These 'dark' galaxies may represent a new type of object containing dark matter and HI gas but few stars.
SourceChinese Academy of Sciences Headquarters·JournalResearch in Astronomy and Astrophysics·DateJul 21, 2022
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.
SourceMassachusetts Institute of Technology·JournalNature·DateJul 13, 2022
Researchers have discovered a new repeating fast radio burst, FRB 190520B, which exhibits extreme behavior similar to the initial discovery, FRB 121102A. The source has high ambient electron density and reliable bursting behaviors, suggesting it may be a 'newborn' with characteristics resembling a super luminous supernova.
SourceChinese Academy of Sciences Headquarters·JournalNature·DateJun 8, 2022
Astronomers have discovered a rare and persistent rapid-fire fast radio burst source, sending out an occasional cosmic ping from over 3.5 billion light years away. The burst, named FRB 20190520B, has encountered far more gas in its host galaxy than expected, challenging previous assumptions about the intergalactic medium.
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The Event Horizon Telescope (EHT) has captured the first image of Sagittarius A*, a black hole at the center of the Milky Way, revealing a ring-like structure and shadow. The observation confirms Einstein's theory of general relativity and provides new insights into giant black holes.
SourceGoethe University Frankfurt·JournalThe Astrophysical Journal Letters·TypeObservational study·DateMay 12, 2022
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.
SourceNicolaus Copernicus University in Torun·JournalNature·TypeObservational study·DateFeb 23, 2022
Astronomers captured the most comprehensive image of radio emission from a supermassive black hole in the Centaurus A galaxy, powered by in-falling gas. The eruption extends eight degrees across the sky, spanning 16 full moons, and reveals spectacular new details of the radio emission.
SourceInternational Centre for Radio Astronomy Research·JournalNature Astronomy·TypeObservational study·DateDec 22, 2021
Astronomers used the VLA to reveal a double helix structure in the magnetic field of M87's jet, tracing material out to nearly 3,300 light-years. The findings suggest that instabilities in the flow of material within the jet could produce the observed double-helix structure.
SourceNational Radio Astronomy Observatory·TypeObservational study·DateDec 7, 2021
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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.
SourceInternational Centre for Radio Astronomy Research·JournalMonthly Notices of the Royal Astronomical Society·TypeObservational study·DateDec 1, 2021
Researchers using ALMA data have observed gas re-accreting onto galaxies affected by ram pressure stripping, potentially slowing down their demise. This process creates unique structures resistant to ram pressure's effects, with mass and a sticky nature that holds onto material more tightly.
SourceNational Radio Astronomy Observatory·JournalThe Astrophysical Journal·TypeObservational study·DateJul 29, 2021
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.
SourceTata Institute of Fundamental Research·JournalThe Astrophysical Journal·DateJul 29, 2021
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Astronomers have detected previously unseen tracers of massive star formation in the Milky Way, including compact regions of hydrogen gas and radio emission from methanol molecules. The survey more than doubled the number of supernova remnants found in the region.
The Event Horizon Telescope has imaged the heart of the nearby radio galaxy Centaurus A, pinpointing the location of its central supermassive black hole and revealing a gigantic jet being born. The new image challenges theoretical models of jets, showing that only the outer edges emit radiation.
SourceRadboud University Nijmegen·JournalNature Astronomy·DateJul 19, 2021
Researchers predicted gamma ray bursts from a nearby magnetar and confirmed their prediction, showing periodic windowed behavior. The pattern of bursts was found to be periodic, but not perfectly regular, adding to the mystery of how magnetars produce radio and gamma ray bursts.
SourceUniversity of California - Berkeley·JournalPhysical Review D·DateJul 13, 2021
Researchers used ALMA to detect a galactic wind driven by a supermassive black hole 13.1 billion years ago, pushing back the start of galaxy-growth interactions by 100 million years. The observation reveals coevolution between supermassive black holes and galaxies since less than a billion years after the Universe's birth.
SourceNational Institutes of Natural Sciences·JournalThe Astrophysical Journal·DateJun 16, 2021
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A team of researchers has conducted the first systematic survey of stellar nurseries, charting over 100,000 nurseries in 90 nearby galaxies. The study reveals that these nurseries are surprisingly diverse across galaxies, live only a relatively short time, and are not very efficient at making stars.
Researchers from NCRA-TIFR and RRI used the Giant Metrewave Radio Telescope to measure the atomic hydrogen gas content of galaxies 9 billion years ago. They found that galaxies at this time were rich in gas, with nearly three times as much mass in atomic gas as in stars.
SourceTata Institute of Fundamental Research·JournalThe Astrophysical Journal Letters·DateJun 7, 2021
A new panorama of the Galactic Center builds on previous surveys, expanding Chandra's high-energy view. The image features X-ray and radio emission intertwined threads, bound by magnetic fields that may have formed through magnetic reconnection. This process drives galactic-scale outflows and affects cosmic rays and interstellar medium.
SourceCenter for Astrophysics | Harvard & Smithsonian·JournalMonthly Notices of the Royal Astronomical Society·DateMay 27, 2021
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Researchers observed plasma jets interacting with magnetic fields in a massive galaxy cluster 600 million light years away. The findings can help clarify how such galaxy clusters evolve, providing new insights into the structure of intracluster magnetic fields.
Researchers discovered a galaxy with a spiral structure 1.4 billion years after the Big Bang using ALMA data. The galaxy's estimated mass is roughly equal to that of the Milky Way and contains a large amount of dust, making it difficult to study in visible light.
SourceNational Institutes of Natural Sciences·JournalScience·DateMay 20, 2021
Astronomers use Hubble to pin five FRBs to host galaxies and identify their origins as young magnetar outbursts. The study provides new insights into the nature of these powerful events, which generate energy equivalent to the Sun's in a year.
SourceNASA/Goddard Space Flight Center·JournalThe Astrophysical Journal·DateMay 20, 2021
Astronomers have developed a new tool to investigate the structure of invisible inter-cluster magnetic fields in galaxies. The technique uses jets of high-energy particles emitted from massive black holes to create detailed maps of these magnetic fields.
SourceNational Institutes of Natural Sciences·JournalNature·DateMay 5, 2021
An Australian-Italian team used the Murchison Widefield Array telescope to observe a cluster of galaxies in Abell 2877. The team discovered a radio 'jellyfish' structure with a steep spectrum that challenges current understanding. The discovery was made possible by the unique low-frequency capabilities of the MWA.
SourceInternational Centre for Radio Astronomy Research·JournalThe Astrophysical Journal·DateMar 17, 2021
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A team of astronomers used a natural cosmic lens to magnify the light from a distant radio galaxy, detected for the first time using the VLA. The discovery provides valuable insights into star formation in low-mass galaxies at early universe ages.
SourceNational Radio Astronomy Observatory·JournalThe Astrophysical Journal·DateMar 16, 2021
Astronomers have found the most distant cosmic jet, providing insights into how galaxies evolved and supermassive black holes grew when the universe was only 780 million years old. The quasar, with a massive black hole 300 million times more massive than the Sun, has a jet of fast-moving particles about 1,000 years old.
SourceNational Radio Astronomy Observatory·DateMar 8, 2021
Research reveals large galaxies steal molecular gas from smaller satellite galaxies, impacting star formation rates. The study provides new systematic evidence of gas loss through ram pressure stripping, leading to galaxy stagnation without gas acquisition.
SourceInternational Centre for Radio Astronomy Research·JournalMonthly Notices of the Royal Astronomical Society·DateFeb 22, 2021
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Researchers successfully localized a non-repeating fast radio burst (FRB) using a novel processing system and supercomputer. The breakthrough identified the source location as a galaxy about 3.6 billion light-years away, providing valuable insights into FRBs and their possible causes.
SourceAmerican Association for the Advancement of Science (AAAS)·DateFeb 9, 2021
Two giant radio galaxies have been discovered in a small patch of sky, exceeding the size of the Milky Way. The discovery was made possible by the MeerKAT International Gigahertz Tiered Extragalactic Exploration (MIGHTEE) survey, which revealed these cosmic beasts with unprecedented sensitivity.
SourceRoyal Astronomical Society·JournalMonthly Notices of the Royal Astronomical Society·DateJan 18, 2021
Astronomers observed a galaxy 12.8 billion light-years from Earth, revealing previously unseen details in its jet of material ejected at three-quarters the speed of light. The analysis supports theoretical models for blazar rarity in the early universe.
Astronomers have found distant galaxies with supermassive black holes that launched powerful radio-emitting jets within the past two decades. The study used data from the VLA Sky Survey and compared it with earlier surveys to identify these new jets.
SourceNational Radio Astronomy Observatory·JournalThe Astrophysical Journal·DateNov 19, 2020
Astronomers used the VLA to study how a crowded environment affects galaxies in the Perseus Cluster. The research reveals complex filamentary structures in radio lobes and bending of jets due to motion through intergalactic material, providing new insights into galaxy clusters.
SourceNational Radio Astronomy Observatory·JournalMonthly Notices of the Royal Astronomical Society·DateNov 12, 2020
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A new telescope, Outrigger, will be built at the Green Bank Observatory to pinpoint the locations of Fast Radio Bursts (FRBs) in far-off galaxies. The telescope will work with the existing CHIME telescope to triangulate FRB locations and provide insights into their nature.
Researchers have made breakthrough discoveries about fast radio bursts (FRBs), a mysterious phenomenon. The studies reveal that magnetars, incredibly dense neutron stars, can produce FRBs through magnetic field dissipation. These findings narrow down the understanding of FRB mechanisms, offering new insights into this enigmatic field.
SourceUniversity of Nevada, Las Vegas·JournalNature·DateNov 5, 2020
A supermagnetized stellar remnant, magnetar SGR 1935+2154 produced a mix of X-ray and radio signals, including the first fast radio burst (FRB) observed from within our Milky Way galaxy. The event suggests that magnetars in other galaxies may produce similar signals.
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A team of astronomers has used the upgraded GMRT to measure atomic hydrogen content in galaxies as they were 8 billion years ago. The study reveals that the exhaustion of atomic hydrogen gas explains the decline in star formation activity over time.
SourceTata Institute of Fundamental Research·JournalNature·DateOct 15, 2020
Astronomers used the VLBA to measure the distance to magnetar XTE J1810-197, one of the closest known at about 8100 light-years. This precise measurement can help determine if magnetars generate Fast Radio Bursts, a long-mysterious phenomenon.
SourceNational Radio Astronomy Observatory·JournalMonthly Notices of the Royal Astronomical Society·DateSep 18, 2020
The discovery of radio jets in the Phoenix Galaxy Cluster suggests that a supermassive black hole is actively heating intra-cluster gas, preventing star formation. This finding has significant implications for our understanding of galaxy evolution and coevolution.
SourceNational Institutes of Natural Sciences·JournalPublications of the Astronomical Society of Japan·DateAug 31, 2020
Astronomers studied the galaxy's radio structure using VLBA, revealing a striking TIE fighter shape at 6.6 GHz. The team observed two periods of activity in TXS 0128+554, suggesting a lull in activity created a gap in the radio emission.
The Very Long Baseline Array revealed young radio-emitting jets that began 80 years ago and stopped, then resumed about 10 years ago. The bright core houses a supermassive black hole about one million times the mass of the Sun.
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The Q3D team will study three bright quasars to measure the activity that comes from accreting material onto supermassive black holes, revealing how it affects host galaxies. The study aims to understand the relationship between supermassive black holes and their host galaxies by analyzing gas motions in nearby and distant galaxies.
Researchers use VLA radio telescope to image galaxy NGC 4217's magnetic field, extending far beyond the galaxy's disk. The dynamo theory suggests that this massive magnetic field is generated by plasma motion within the galaxy's disk.
Researchers analyzed the magnetic field of Milky Way-like galaxy NGC 4217 and discovered unique structures such as X-shaped fields, helices, superbubbles, and giant loops. These findings suggest a connection between star formation and supernovae explosions in shaping the galaxy's magnetic field.
Researchers discovered that quasar gamma-ray emission extends over thousands of light-years along plasma jets, contradicting previous assumptions. This finding reveals that particle acceleration occurs not only near the black hole but also along the entire jet length.
A new study using international radio telescope data reveals galaxies are nearer than predicted, exacerbating a discrepancy in the Hubble Constant measurement. This finding bolsters the need to revise the standard cosmological model of the Universe.
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Astronomers have measured the Fermi Bubbles, two enormous outflows of high-energy gas emanating from the Milky Way, using the Wisconsin H-Alpha Mapper telescope. The findings refine our understanding of these mysterious blobs and provide new opportunities to study the galaxy's central region.
Researchers have found all of the missing 'normal' matter in the vast space between stars and galaxies, using fast radio bursts. The phenomenon allowed them to directly detect the missing matter, which is equivalent to only one or two atoms in a room the size of an average office.
SourceInternational Centre for Radio Astronomy Research·JournalNature·DateMay 27, 2020
A team of international scientists has localized a repeating fast radio burst to a region approximately seven light years across, shedding new light on the mystery surrounding its origins.
SourceWest Virginia University·JournalNature·DateJan 6, 2020
Thirteen massive black holes have been discovered in dwarf galaxies less than a billion light-years from Earth, with an average mass of 400,000 times that of the Sun. These findings suggest that half of these massive black holes are wandering in the outskirts of their galaxies, indicating galaxy mergers earlier in their history.
SourceNational Radio Astronomy Observatory·DateJan 5, 2020
Astronomers using the GMRT have discovered a massive ring of hydrogen gas surrounding a galaxy, with a diameter of 380,000 light-years. The origin and formation mechanism of such rings remain unknown, despite previous thought that they are associated with galaxy-galaxy collisions.
SourceTata Institute of Fundamental Research·JournalMonthly Notices of the Royal Astronomical Society·DateJan 2, 2020
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Astronomers have discovered hair-like filaments of magnetic field protruding above and below the disk of spiral galaxy NGC 4631. The filaments, extending beyond the disk into the galaxy's extended halo, indicate a large-scale, coherent magnetic field.
Astrophysicists simulated giant radio galaxies to explain their formation. They found that these objects remain enormous even at great distances, challenging classical physics.
SourceUniversity of Kent·JournalMonthly Notices of the Royal Astronomical Society·DateOct 25, 2019
Astronomers have found that a distant galaxy is nestled in a serene ocean of gas, defying expectations and providing new insights into the composition of galaxy halos. The discovery was made possible by a new technique involving fast radio bursts, which allowed researchers to study the gas directly.
SourceInternational Centre for Radio Astronomy Research·JournalScience·DateSep 26, 2019