All articles tagged with #event horizon telescope
The Event Horizon Telescope released the first image of the Milky Way’s central black hole, Sagittarius A*, in 2022. The 4-million-solar-mass object lies about 27,000 light-years away. Eight linked radio observatories formed an Earth-sized telescope, and the ring around the shadow matches General Relativity despite the object’s minute-scale variability; researchers now plan time-resolved movies to study gravity in action.
Astronomers are using the expanded Event Horizon Telescope to capture frequent images of the supermassive black hole in M87—every 3–4 days from March through April—to assemble a time-lapse video of its motion and dynamics, potentially revealing its spin, how it feeds, and the behavior of its jets. Eleven of the twelve telescopes will participate (the South Pole telescope cannot see M87), and petabytes of data must be processed before the video can be constructed, while Sagittarius A* may be too restless for reliable imaging.
A new study argues the Milky Way’s centre could be a dense dark-matter core wrapped in a halo, potentially mimicking a black hole’s gravity and explaining the rapid orbits of S-stars as well as the shadow seen by the Event Horizon Telescope.
Using the Event Horizon Telescope’s VLBI observations of M87*, researchers traced the base of the galaxy’s 3,000‑light‑year jet to a region near the black hole’s shadow, linking jet launching to the accretion flow around the supermassive black hole (about 6.5 billion suns) and connecting theory to observation. The finding, based on 2021 data and building on the 2019 image of M87*, was published in Astronomy & Astrophysics.
Astronomers using the Event Horizon Telescope's VLBI observations linked the glowing ring around the supermassive black hole M87* to the base of its 3,000‑light‑year jet, pinpointing where jets originate and helping to illuminate how these powerful outflows are launched from black holes; the findings were published in Astronomy & Astrophysics.
Astronomers with the Event Horizon Telescope plan the first time-resolved movie of a supermassive black hole, targeting M87 to measure spin and jet-launching mechanisms. By stitching data from a world-spanning telescope network, they hope to move beyond the 2019 image and illuminate how black holes influence galaxy evolution, with data processing and delivery taking months before public release.
Astronomers using the Event Horizon Telescope plan a spring “movie campaign” to image the supermassive black hole at the center of M87, stitching snapshots into a moving sequence to measure its spin and how it launches jets—insights that could illuminate galaxy evolution—though the data will be enormous and processing will stretch after Antarctic summer.
Astronomers using the Event Horizon Telescope observed two shockwaves in the jet of quasar OJ287, indicating a binary supermassive black hole system. The shocks travel through strong magnetic fields and interact with Kelvin-Helmholtz instabilities, producing a highly twisted, helical magnetic field and rapid polarization changes. The findings provide direct evidence of complex jet dynamics, including non-ballistic motions, and demonstrate the EHT’s capability to probe jet physics beyond imaging black holes.
Scientists are developing new methods to distinguish between different types of black holes and test Einstein's theory of relativity using high-resolution images of black hole shadows, with future telescopes expected to improve the ability to detect deviations from current models.
Astronomers have captured the first image of two black holes orbiting each other in quasar OJ287, confirming a 40-year-old hypothesis and providing new insights into binary black hole systems using high-resolution radio imaging.
AI analysis of the Milky Way's central black hole, Sagittarius A*, suggests it spins rapidly with a high spin parameter and a slight tilt, providing new insights into its behavior and structure, aided by advanced machine learning techniques and upcoming telescope upgrades.
Observations of the supermassive black hole M87* over several years reveal a complete flip in the magnetic field's polarization pattern, indicating highly dynamic and turbulent conditions around the black hole, which could influence jet formation and galaxy evolution.
Astronomers observing the supermassive black hole in galaxy M87 have discovered unexpected changes in its magnetic field polarization over several years, indicating a more complex and dynamic magnetic environment near the event horizon than previously thought, challenging existing models and highlighting the evolving capabilities of the Event Horizon Telescope.
New images of the black hole M87* taken in 2017, 2018, and 2021 reveal dramatic changes in its magnetic fields, with polarization patterns flipping direction, indicating dynamic environmental changes around this supermassive black hole, which is over six billion times the mass of the sun.
New images of the supermassive black hole M87* taken by the Event Horizon Telescope reveal unexpected changes in the polarization of its magnetic fields over four years, challenging existing models and indicating a dynamic environment near the black hole. The observations also captured the base of a jet of matter emerging from the black hole, providing insights into how black holes influence their host galaxies. These findings demonstrate the evolving capabilities of the EHT and its potential to deepen our understanding of black hole physics.