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A “beautiful effect” predicted by quantum electrodynamics (QED) can explain the puzzling first observations of polarized X-rays emitted by a magnetar – a neutron star featuring a powerful magnetic fie...
As a star runs out of fuel, it will billow out to a million times its original size, engulfing any matter — and planets — in its wake. Scientists have observed hints of stars just before, and shortly ...
Astronomers detect the closest example yet of a black hole devouring a star（图）
黑洞 吞噬恒星 红外天文学
2023/6/9
Once every 10,000 years or so, the center of a galaxy lights up as its supermassive black hole rips apart a passing star. This “tidal disruption event” happens in a literal flash, as the central black...
An accretion disk is a colossal whirlpool of gas and dust that gathers around a black hole or a neutron star like cotton candy as it pulls in material from a nearby star. As the disk spins, it whips u...
Black hole burps up shredded star（图）
黑洞 恒星残骸 天文学
2023/6/25
In October 2018, a small star was ripped to shreds when it wandered too close to a black hole in a galaxy located 665 million light years away from Earth. Though it may sound thrilling, the event did ...
Scientists link star-shredding event to origins of universe's highest-energy particles（图）
Scientists star-shredding event origins universe highest-energy particles
2021/3/5
A team of scientists has detected the presence of a high-energy neutrino -- a particularly elusive particle -- in the wake of a star's destruction as it is consumed by a black hole.The discovery is a ...
New observations of black hole devouring a star reveal rapid disk formation（图）
New observations black hole devouring star rapid disk formation
2020/9/11
When a star passes too close to a supermassive black hole, tidal forces tear it apart, producing a bright flare of radiation as material from the star falls into the black hole. Astronomers study the ...
Even 'Goldilocks' exoplanets need a well-behaved star（图）
Goldilocks exoplanets well-behaved star
2019/11/15
An exoplanet may seem like the perfect spot to set up housekeeping, but before you go there, take a closer look at its star.Rice University astrophysicists are doing just that, building a computer mod...
Astronomers see evidence of Einstein's theories in star orbiting massive black hole（图）
Astronomers evidence Einstein theories star orbiting massive black hole
2019/10/22
More than 100 years ago, Albert Einstein predicted that light is deflected by extremely massive objects, but there is no way to test such powerful effects on Earth. Instead, astronomers turn their att...
On April 25, NSF's Laser Interferometer Gravitational-Wave Observatory (LIGO) and the European-based Virgo detector registered gravitational waves from what appears to be a crash between two neutron s...
Astronomers Create First Detailed Images Of Surface Of Giant Star（图）
Astronomers Create First Detailed Surface Of Giant Star
2018/2/1
An international team of astronomers has produced the first detailed images of the surface of a giant star outside our solar system, revealing a nearly circular, dust-free atmosphere with complex area...
Supermassive Black Holes Control Star Formation In Large Galaxies（图）
Supermassive Black Holes Control Star Formation Large Galaxies
2018/1/10
Young galaxies blaze with bright new stars forming at a rapid rate, but star formation eventually shuts down as a galaxy evolves. A new study, published January 1, 2018, in Nature, shows that the mass...
Radio Observations Point to Likely Explanation for Neutron-Star Merger Phenomena（图）
Radio Observations Point Likely Explanation Neutron-Star Merger
2018/1/10
Three months of observations with the National Science Foundation’s Karl G. Jansky Very Large Array (VLA) have allowed astronomers to zero in on the most likely explanation for what happened in the af...
Radio “Eyes” Unlocking Secrets of Neutron-Star Collision（图）
Radio Eyes Unlocking Neutron-Star Collision
2017/10/26
When a pair of superdense neutron stars collided and potentially formed a black hole in a galaxy 130 million light-years from Earth, they unleashed not only a train of gravitational waves but also an ...
OU Astrophysicist Predicts Detached Eclipsing White Dwarfs to Merge Into an Exotic Star（图）
OU Astrophysicist Predicts Detached Eclipsing White Dwarfs to Merge Exotic Star
2017/9/5
A University of Oklahoma astrophysicist, Mukremin Kilic, and his team have discovered two detached, eclipsing double white dwarf binaries with orbital periods of 40 and 46 minutes, respectively. White...