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March 25, 2021 Archives
Thursday, March 25, 2021
CONTEXT: Visualising Quaternions with Stereographic Projection
Posted at
15:51
CONTINUITY: The Kickstarter for Robert Kroese's Apocalypse Trilogy, Mammon, Is Live
The Kickstarter for Robert Kroese's new science fiction trilogy, “Mammon”, about “a different sort of apocalypse” is now live. I've backed it.https://t.co/oPrxjQsvoT
— John Walker (@Fourmilab) March 25, 2021
Posted at
14:38
TRACKING WITH CLOSEUPS: Imaging the Magnetic Fields around a Black Hole
For the first time, EHT scientists have mapped the magnetic fields around a black hole using polarized light waves. With this breakthrough, we have taken a crucial step in solving one of astronomy’s greatest mysteries.
— Event Horizon 'Scope (@ehtelescope) March 24, 2021
Credit: EHT Collaboration#MagnetizedBlackHole #EHTBlackHole pic.twitter.com/sey42kAMSx
Here is more information about how polarised light was used to trace the magnetic fields of the accretion disc. This video explains how magnetic field strength affects the observed pattern of polarisation.
Posted at
13:40