Supercomputer Simulations Test Star-destroying Black Holes

  • Released Friday, November 26, 2021
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Watch eight model stars stretch and deform as they approach a virtual black hole 1 million times the mass of the Sun. The black hole’s gravity rips some stars apart into a stream of gas, a phenomenon called a tidal disruption event. Others manage to withstand their close encounters. These simulations show that destruction and survival depend on the stars’ initial densities. Yellow represents the greatest densities, blue the least dense.

Credit: NASA's Goddard Space Flight Center/Taeho Ryu (MPA)

Music: "Lava Flow Instrumental" from Universal Production Music

Watch this video on the NASA Goddard YouTube channel.

Complete transcript available.

Watch as eight stars skirt a black hole 1 million times the mass of the Sun in these supercomputer simulations. As they approach, all are stretched and deformed by the black hole’s gravity. Some are completely pulled apart into a long stream of gas, a cataclysmic phenomenon called a tidal disruption event. Others are only partially disrupted, retaining some of their mass and returning to their normal shapes after their horrific encounters.

These simulations are the first to combine the physical effects of Einstein’s general theory of relativity with realistic stellar density models. The virtual stars range from about one-tenth to 10 times the Sun’s mass.

The division between stars that fully disrupt and those that endure isn’t simply related to mass. Instead, survival depends more on the star’s density.

Scientists investigated how other characteristics, such as different black hole masses and stellar close approaches, affect tidal disruption events. The results will help astronomers estimate how often full tidal disruptions occur in the universe and will aid them in building more accurate pictures of these calamitous cosmic occurrences.

A star weighing 15 percent of our Sun's mass is partially disrupted as it swings by the black hole. The video frame equals the Sun's size.

Credit: Taeho Ryu (MPA)

The black hole partially disrupts a star weighing 30 percent of our Sun's mass. The video frame equals the Sun's size.

Credit: Taeho Ryu (MPA)

The black hole fully disrupts a star weighing 40 percent of our Sun's mass. The video frame equals the Sun's size.

Credit: Taeho Ryu (MPA)

The black hole fully disrupts a star weighing 50 percent of our Sun's mass. The video frame equals twice the Sun's size.

Credit: Taeho Ryu (MPA)

The black hole partially disrupts a star weighing 70 percent of our Sun's mass. The video frame equals twice the Sun's size.

Credit: Taeho Ryu (MPA)

The black hole partially disrupts a Sun-like star. The video frame equals twice the Sun's size.

Credit: Taeho Ryu (MPA)

The black hole fully disrupts a star weighing 3 times our Sun's mass. The video frame equals 10 times the Sun's size.

Credit: Taeho Ryu (MPA)

The black hole fully disrupts a star weighing 10 times our Sun's mass. The video frame equals 10 times the Sun's size.

Credit: Taeho Ryu (MPA)

For More Information

See https://www.nasa.gov/feature/goddard/2021/scientists-fling-model-stars-at-a-virtual-black-hole-to-see-who-survives/

Credits

Please give credit for this item to:
NASA's Goddard Space Flight Center. However, individual items should be credited as indicated above.

This page was originally published on Friday, November 26, 2021.
This page was last updated on Wednesday, May 3, 2023 at 1:43 PM EDT.

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