{"id":227500,"date":"2026-01-04T21:39:13","date_gmt":"2026-01-04T21:39:13","guid":{"rendered":"https:\/\/www.newsbeep.com\/ie\/227500\/"},"modified":"2026-01-04T21:39:13","modified_gmt":"2026-01-04T21:39:13","slug":"astronomers-stunned-as-our-supermassive-black-hole-displays-unprecedented-behavior","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/ie\/227500\/","title":{"rendered":"Astronomers stunned as our supermassive black hole displays unprecedented behavior"},"content":{"rendered":"

Using the unmatched power of the James Webb Space Telescope (JWST) and an extended observation window, astronomers have witnessed something never before seen around the supermassive black hole at the center of our Milky Way \u2014 and they\u2019re still trying to explain it.<\/p>\n

Normally, seeing bursts of light or brief flickers from the swirling gas and dust around a black hole \u2014 known as an accretion disk<\/a> \u2014 isn\u2019t surprising. But this time is different. \u201cThe black hole at the center of our galaxy seems to be unique in this respect,\u201d says Farhad Yusef-Zadeh, an astrophysicist at Northwestern University. His team observed Sagittarius A* several times between 2023 and 2024 with the JWST. What they found left them speechless.<\/p>\n

In their paper published in The Astrophysical Journal Letters, the team describes how Sagittarius A*\u2019s accretion disk emits a constant stream of flares \u2014 with no downtime. Some are faint glimmers lasting just seconds, others are daily outbursts bright enough to blind instruments, and a few are subtle flickers that last for months. \u201cSagittarius A* is always bubbling with activity and never seems to reach a steady state. There\u2019s always something new happening,\u201d they report.<\/p>\n

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Thanks to the James Webb Space Telescope (JWST), astrophysicists at Northwestern University (USA) have obtained the longest and most detailed view to date of the supermassive black hole at the center of the Milky Way. They discovered that the black hole\u2019s accretion disk emits a constant stream of eruptions without any resting periods. These are visible here in two images taken at 2.1 microns on April 7, 2024. \u00a9 Farhad Yusef-Zadeh, Northwestern University<\/p>\n

A never-ending light show captured in the near infrared<\/p>\n

It was JWST\u2019s near-infrared camera (NIRCam) that revealed this strange, restless behavior. The telescope was aimed at the galactic center for a total of 48 hours, broken into 8- to 10-hour sessions throughout the year \u2014 the longest and most detailed observation of Sagittarius A* ever conducted.<\/p>\n

According to the team, the black hole\u2019s accretion disk produces about five or six major flares every day, with several smaller ones in between. \u201cWe couldn\u2019t find any pattern to it,\u201d says Yusef-Zadeh. \u201cThe activity appears completely random.\u201d<\/p>\n

Still, the researchers think two different mechanisms could explain the mix of flares and flickers. Minor disturbances within the disk may cause weaker flashes, while more intense turbulence could compress plasma<\/a> and create stronger radiation bursts.<\/p>\n

\u201cIt\u2019s a bit like what happens in the Sun\u2019s magnetic field, which can produce solar flares,\u201d they explain. Yusef-Zadeh suggests that the brightest outbursts might be magnetic reconnection events \u2014 when two magnetic fields collide and release enormous energy, accelerating particles to nearly the speed of light.<\/p>\n

Save an extra 100% this #BlackFriday<\/a> when you spend the day with #BlackHoleFriday<\/a>\u26ab instead! No Coupons, no codes, just all black holes all the time!<\/p>\n

Space out to this data sonification of the center of our galaxy, including Sagittarius A*, our galaxy\u2019s supermassive black hole. pic.twitter.com\/3gmB0XaH5q<\/a><\/p>\n

\u2014 Chandra Observatory (@chandraxray) November 29, 2024<\/a> <\/p>\n

A 24-hour watch to unlock the black hole\u2019s secrets<\/p>\n

By watching Sagittarius A* at two infrared wavelengths (2.1 and 4.8 microns) simultaneously \u2014 something JWST\u2019s NIRCam makes possible \u2014 astronomers noticed something remarkable. Events at the shorter wavelength brighten slightly before those at the longer one. \u201cIt\u2019s the first time such a time delay has ever been detected, ranging from a few seconds to about 40,\u201d Yusef-Zadeh explains.<\/p>\n

The team believes that as particles spiral around magnetic field lines, they lose energy faster at shorter wavelengths than at longer ones \u2014 exactly what these observations suggest. To verify this, they\u2019ve requested even longer observing time with the James Webb telescope.<\/p>\n

\u201cIf we could observe for 24 hours straight, we might uncover features invisible in shorter sessions,\u201d the researchers say. \u201cIt would be amazing \u2014 and it could reveal whether these flares follow a pattern or are truly random.\u201d<\/p>\n

\"mayer-nathalie\"<\/p>\n

Nathalie Mayer<\/p>\n

Journalist<\/p>\n

Born in Lorraine on a freezing winter night, storytelling has always inspired me, first through my grandmother’s tales and later Stephen King’s imagination. A physicist turned science communicator, I’ve collaborated with institutions like CEA, Total, Engie, and Futura. Today, I focus on unraveling Earth’s complex environmental and energy challenges, blending science with storytelling to illuminate solutions.<\/p>\n

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