Mapping Cosmic Magnetism with Lofar and Ska

SURROGATE MARKER.
“Most of what we know about galactic magnetic fields comes through the detection of radio waves.”
 
NEW TOOLS.
“The new generation of radio telescopes will open a new era of magnetic field studies.”
 
UNDERLYING FABRIC.
“The search for magnetic fields in the intergalactic medium (IGM) is of fundamental importance for cosmology.”
 
NO EMPTY SPACE.
“All of “empty” space in the Universe may be magnetized. Its role as the likely seed field for galaxies and clusters and its possible relation to structure formation in the early Universe, places considerable importance on its discovery.”
 
TIDAL WAVES.
“Structure formation led to strong intergalactic shocks.”
 
THE GYRES.
“Radio observations of polarized synchrotron emission showed that the large-scale field structures in almost all nearby galaxies are spiral with pitch angles similar to those of the optical spiral arms.”
 
SPIRAL DYNAMOS.
“Spiral fields were also detected in galaxies without optical spiral structure and in circumnuclear gas rings. This indicates the action of dynamos in rotating galaxies, where the Coriolis force organizes turbulent gas motions, amplifying a weak seed field and generating coherent field structures.”
 
THE UNKNOWN.
“However, the physics of galactic dynamos is far from being understood.”

Share the knowledge