Channel: NASA Goddard

Category: Science & Technology

Tags: black holesupercomputernasagoddard space flight centerstartdesimulationtidal disruption eventscott wiessinger

Description: 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 shape after their horrific encounter. These simulations are the first to combine the physical effects of Einstein’s theory of general 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. Music credit: "Lava Flow Instrumental" from Universal Production Music Credit: NASA's Goddard Space Flight Center/Taeho Ryu (MPA) Scott Wiessinger (KBRwyle): Producer Jeanette Kazmierczak (University of Maryland College Park): Science Writer Francis Reddy (University of Maryland College Park): Science Writer Taeho Ryu (MPA): Scientist Taeho Ryu (MPA): Visualizer Scott Wiessinger (KBRwyle): Narrator Scott Wiessinger (KBRwyle): Editor This video can be freely shared and downloaded at svs.gsfc.nasa.gov/14000. While the video in its entirety can be shared without permission, the music and some individual imagery may have been obtained through permission and may not be excised or remixed in other products. Specific details on such imagery may be found here: svs.gsfc.nasa.gov/14000. For more information on NASA’s media guidelines, visit nasa.gov/multimedia/guidelines. If you liked this video, subscribe to the NASA Goddard YouTube channel: youtube.com/NASAGoddard Follow NASA’s Goddard Space Flight Center · Instagram instagram.com/nasagoddard · Twitter twitter.com/NASAGoddard · Twitter twitter.com/NASAGoddardPix · Facebook: facebook.com/NASAGoddard · Flickr flickr.com/photos/gsfc