All articles tagged with #blackhole
An international X-ray spacecraft has discovered that the Milky Way's supermassive black hole, Sagittarius A*, experienced powerful flares over the past 1,000 years, revealing a violent history previously unknown, which could reshape our understanding of black hole evolution and their influence on galaxy formation.
Scientists used the James Webb Space Telescope to capture the clearest image yet of the powerful plasma jet emanating from the supermassive black hole in galaxy M87, revealing detailed features of the jet and advancing understanding of black hole physics.
Astronomers observing the supermassive black hole M87* have discovered unexpected changes in its magnetic field polarization over several years, indicating a complex and dynamic magnetic environment near the event horizon, challenging existing models and highlighting the evolving capabilities of the Event Horizon Telescope.
Recent observations of the supermassive black hole M87* by the Event Horizon Telescope reveal unexpected reversals in magnetic fields and strange jets, challenging current models of black hole physics and indicating a highly dynamic environment near the event horizon.
Astronomers have observed a bright galactic nucleus called PKS 1424+240, dubbed the 'Eye of Sauron,' a blazar with jets pointed directly at Earth, causing an optical illusion that makes the jets appear slower and brighter. Located 7.4 billion light-years away, it emits gamma rays and neutrinos, providing insights into supermassive black holes and cosmic jet behavior.
Astronomers have observed a bright galactic nucleus called PKS 1424+240, dubbed the 'Eye of Sauron,' a blazar with jets pointing directly at Earth, creating an optical illusion that boosts its brightness and offers insights into supermassive black holes and cosmic jets.
Astronomers have observed a bright galactic nucleus called PKS 1424+240, dubbed the 'Eye of Sauron,' which is a blazar emitting intense gamma rays and neutrinos, with jets pointed directly at Earth. The apparent brightness and slow movement of its jets are due to projection effects, providing insights into supermassive black holes and cosmic jet behavior.
Astronomers observed a supermassive black hole in a galaxy cluster about 6 billion light-years away just beginning its active phase, launching tiny jets and coinciding with a period of intense star formation, providing rare insights into the early stages of black hole feedback and galaxy evolution.
An international team observed a star survive a close encounter with a supermassive black hole and return for a second pass, challenging previous assumptions about stellar tidal disruption events and suggesting many cosmic flashes may involve partial disruptions rather than complete destruction.
A new AI model trained on noisy telescope data suggests the supermassive black hole at the center of our galaxy, Sagittarius A*, is spinning at nearly top speed and its axis points toward Earth, but experts caution the results may be biased due to data quality issues.
Using AI and millions of simulations, astronomers discovered that the Milky Way's central black hole, Sagittarius A*, is spinning near its maximum speed, challenging existing theories about magnetic behaviors in accretion disks.
Astronomers using NASA's Chandra X-ray telescope have observed a massive jet from the supermassive black hole in the galaxy Centaurus A colliding with an unknown object, creating a unique V-shaped X-ray emission. This discovery, located 12 million light-years away, reveals new insights into the behavior of black hole jets, which are formed by high-energy particles accelerated by magnetic fields around black holes. The exact nature of the object impacted by the jet remains unknown due to its distance.
Astronomers using NASA's Chandra X-ray Observatory have discovered a mysterious V-shaped X-ray emission in the galaxy Centaurus A, caused by a jet from a supermassive black hole striking an unidentified object. This object, named C4, is located about 12 million light-years from Earth. The V-shape, with arms at least 700 light-years long, suggests a collision with a massive star or gas cloud, generating turbulence and enhanced X-ray emissions. The exact nature of the object remains unknown, and the findings are detailed in The Astrophysical Journal.
The center of a black hole, known as the singularity, is a theoretical point where mass is thought to be compressed to zero volume, implying infinite density, which suggests a breakdown of our current understanding of physics. The event horizon marks the boundary beyond which nothing can escape the black hole's gravitational pull. While general relativity predicts the existence of singularities, it is believed to fail at describing the true nature of a black hole's center, indicating the need for a new theory of quantum gravity. The reality inside a black hole remains speculative and may forever be beyond our empirical understanding.
The year 2023 marked significant achievements in space exploration, including the return of asteroid samples by NASA's Osiris-Rex, the launch of the Psyche mission to a metal asteroid, advancements in laser communication technology, the discovery of the oldest black hole, the first images from ESA's Euclid telescope, observations by the Webb telescope, the ongoing Mars exploration by the Ingenuity helicopter, India's successful moon landing near the south pole, and the discovery of water on the moon by China's Chang'e 5 mission. These milestones contribute to our understanding of the universe's origins, the potential for life on Earth, and the future of space technology and exploration.