Filaments may represent most visible effect of galaxy’s central black hole
Scientists have discovered the forces that bind together a strange network of 100-million-year-old, ropelike gas filaments that extend from an enormous elliptical galaxy.
The filaments presented a puzzle because they should normally collapse under the pressure of the hotter surrounding gas. New images from the Hubble Space Telescope showed individual gas threads bundled together within the filaments, which allowed researchers to estimate the magnetic fields necessary to hold everything together.
“When you see a piece of rope from a distance it looks solid, but when you look closely there’s a lot of threads,” said Andrew Fabian, an astrophysicist at Britain’s University of Cambridge who led the study detailed in this week’s issue of the journal Nature.


