Black Hole Swarms | Space Time

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACEUploaded 25-04-18It’s been conjectured that the center of the Milky Way is swarming with tens of thousands of black holes. And now we’ve actually seen them.You can further support us on Patreon at https://www.patreon.com/pbsspacetimeGet your own Space Time t­-shirt at http://bit.ly/1QlzoBiTweet at us! @pbsspacetimeFacebook: facebook.com/pbsspacetimeEmail us! pbsspacetime [at] gmail [dot] comComment on Reddit: http://www.reddit.com/r/pbsspacetimeHelp translate our videos!https://www.youtube.com/timedtext_cs_...Previous Episode:Using Stars to See Gravitational Waveshttps://www.youtube.com/watch?v=xnwXyPU_ps0This episode of Space Time Journal Club looks at the paper:A density cusp of quiescent X-ray binaries in the central parsec of the Galaxyby Hailey, Mori, Bauer, Berkowitz, Hong and Hord (2018)https://www.nature.com/articles/nature25029The core of our galaxy is a wild place. The stars are so densely packed that the night sky would be 500 times brighter. A supermassive black hole, 4 million times the mass of our Sun lurks in the center. It flings nearby stars into extreme slingshot orbits. It consumes anything that gets too close is consumed, burping a blast of X-rays. We know these things because we see them from our comfortable vantage point 28,000 light years out in the galactic disk. But there’s one particularly terrible feature of the core of our galaxy that, until now, has only been has only be hypothesized: The central few light years of the Milky Way is thought to contain a vast swarm of smaller black holes that have rained in from the surrounding galaxy.Hosted by Matt O'DowdWritten by Matt O'DowdGraphics by Grayson BlackmonAssistant Editing and Sound Design by Mike Petrow and Linda HuangMade by Kornhaber Brown (www.kornhaberbrown.com)Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters: Big BangCoolAsCatsDavid NicklasAnton LifshitsJoey RednerFabrice EapQuasarTambe BarsbayMayank M.