News On Japan

Japanese Team Finds Black Holes Shoot Gas Like Bullets, Not Wind

FUKUOKA, May 16 (News On Japan) - A research paper co-authored by a lecturer at Fukuoka University of Education has been published in the British scientific journal Nature, detailing a groundbreaking discovery about supermassive black holes.

Lecturer Misumoto held a press conference on Friday morning, explaining the study, which reveals that supermassive black holes do not emit smooth gas flows as previously thought, but instead shoot out clusters of ultra-fast gas resembling bullets.

Misumoto and the research team observed black holes using data collected from satellites. They found that the "winds" blowing around the black holes had a bumpy, fragmented structure—contrary to the conventional belief that they were smooth and continuous. The team described the moment of realization as electrifying.

"The data was just too impressive to ignore. We felt we absolutely had to publish it as a paper," said Misumoto. "The moment we understood what we were looking at, I couldn’t sit still—I was pacing around the room from excitement."

The team plans to continue observing black holes using artificial satellites to further explore the nature of these mysterious cosmic phenomena.

Supermassive black holes, typically millions to billions of times the mass of the Sun, continue to be among the most enigmatic objects in the universe. One of the most compelling current theories concerns their formation. While it was once thought that these giants could only form through the gradual accumulation of stellar-mass black holes or the steady accretion of gas over cosmic time, recent models suggest that supermassive black holes may have formed rapidly in the early universe through the direct collapse of massive gas clouds. This "direct-collapse" theory proposes that under the right conditions—particularly in regions with strong ultraviolet radiation that suppresses star formation—primordial gas clouds could have skipped star formation altogether and collapsed straight into black holes with tens of thousands of solar masses. This would explain how quasars, powered by supermassive black holes, were already present less than a billion years after the Big Bang.

Another major area of development involves the role of supermassive black holes in galaxy evolution. It is now widely accepted that almost every large galaxy hosts a supermassive black hole at its center and that these black holes and their host galaxies co-evolve. Observations show a tight correlation between the mass of the central black hole and the properties of the galaxy’s bulge, such as its stellar mass and velocity dispersion. This has led to the feedback theory, where outflows of energy and matter from the accretion disk around the black hole—through jets or winds—regulate star formation in the galaxy. These energetic processes may either trigger or suppress star formation, depending on conditions, and they are now considered key to understanding how galaxies grow and why massive galaxies tend to stop forming stars.

Recent high-resolution observations from telescopes like the Event Horizon Telescope and the James Webb Space Telescope have also begun to provide more detailed glimpses of the environments around supermassive black holes. The image of the shadow of the black hole in the galaxy M87 in 2019 confirmed predictions of general relativity, and further studies are refining our understanding of accretion disk physics, jet formation, and spacetime near the event horizon. There is also growing interest in understanding the behavior of magnetic fields around black holes and their potential role in powering relativistic jets that stretch thousands of light-years into intergalactic space. Polarization measurements from the Event Horizon Telescope have begun to offer clues about how magnetic fields align near the event horizon and how they might extract rotational energy from the spinning black hole itself—a mechanism proposed in the Blandford-Znajek process.

On the theoretical front, some physicists are exploring whether supermassive black holes might reveal signatures of quantum gravity. Since general relativity and quantum mechanics are incompatible in their current forms, the extreme conditions near the singularities of black holes could offer insights into a more unified theory. Concepts such as firewalls, fuzzballs, and quantum information paradoxes continue to be debated, with ideas like black hole entropy, Hawking radiation, and holographic principles being tested indirectly through astrophysical observations. Additionally, gravitational wave astronomy, especially following the detection of black hole mergers by LIGO and Virgo, may soon reveal evidence of mergers involving intermediate-mass or even supermassive black holes, providing new data to test these frontier theories.

In sum, the latest theories about supermassive black holes not only revisit their possible origins through direct collapse in the early universe, but also increasingly position them as central agents in shaping galaxies, regulating star formation, and potentially offering a window into the unification of physics itself. As observational technologies improve and simulations grow more sophisticated, the next decade is likely to yield deeper answers—and perhaps more mysteries—about these immense cosmic engines.

Source: FBS

News On Japan
POPULAR NEWS

Southern Kyushu has entered the rainy season, marking the first time in 49 years that it has done so earlier than Okinawa. It is also the earliest rainy season start for any region in Japan since the Meteorological Agency began keeping records. Authorities are warning of heavy rainfall not only in Kyushu but across other parts of the country as well.

A road collapse in Yashio City, Saitama Prefecture is expected to take five to seven years to fully restore, local officials said on Friday, following the recovery of a truck cab that had remained lodged in the sewer system since the January accident.

Eighty years have passed since the end of World War II, yet the memories of its fiercest battles continue to echo in the heart of Okinawa. The district of Omoromachi in central Naha, now a lively urban hub filled with people, was once the site of one of the bloodiest clashes of the Battle of Okinawa—the Battle of Sugar Loaf Hill.

The Aoi Festival, one of Kyoto’s three major traditional festivals, began on May 15th with a vibrant procession of around 500 people dressed in elegant Heian-period garments making their way through the streets of the ancient capital.

Japan’s prototypes of the kilogram and meter, which once served as national standards for weight and length, were presented to the press this week ahead of the 150th anniversary of the Meter Convention, the international treaty that standardized global measurement systems, to be marked on May 20th.

MEDIA CHANNELS
         

MORE Sci-Tech NEWS

A research paper co-authored by a lecturer at Fukuoka University of Education has been published in the British scientific journal Nature, detailing a groundbreaking discovery about supermassive black holes.

Japan’s prototypes of the kilogram and meter, which once served as national standards for weight and length, were presented to the press this week ahead of the 150th anniversary of the Meter Convention, the international treaty that standardized global measurement systems, to be marked on May 20th.

The Japan Meteorological Agency announced has that the Kuroshio Large Meander, a phenomenon that has lasted for 7 years and 9 months, is expected to come to an end. The agency is urging people to stay updated, noting that changes in the Kuroshio Current may affect both fish species and fishing grounds.

A male worker cleaning Reactor Unit 3 at the Genkai Nuclear Plant in Saga Prefecture was found to have suffered internal radiation exposure, marking the first such confirmed case at Kyushu Electric, the company announced on Sunday.

The current global standard for measuring time is based on the oscillation of cesium atoms. Its margin of error—just one second every 60 million years—might seem sufficiently precise, but for one Japanese physicist, it is not enough.

Kyushu University opened its Chikushi Campus to the public on May 10th, offering a hands-on experience of science to prospective students and local residents.

A groundbreaking project to develop the world’s first artificial satellite made of wood is underway in Kyoto, led by astronaut Takao Doi. The initiative is part of a broader push toward environmentally sustainable space exploration.

Sustainable aviation fuel (SAF), made from used cooking oil and other waste materials, has been produced domestically in Japan for the first time and supplied to an aircraft.