The patterns of the changes in
magnetic field strength over 48 hours seen in these two events were so similar to those recorded in a ground sensor during the Carrington event that the first event must not have been global in its reach either, the team reports in the Journal of Space Weather and Space Climate.
In order to put these relatively recent changes into historical perspective, Rochester researchers — led by John Tarduno, a professor and chair of EES — gathered data from sites in southern Africa, which is within the South Atlantic Anomaly, to compile a record of Earth's
magnetic field strength over many centuries.
Not exact matches
Scaling up will mean creating
magnetic fields that vary in
strength over relatively short distances.
HEATED PAST From around 4.25 billion years ago to at least as late as 2.5 billion years ago, the moon had a
magnetic field, which dwindled in
strength over time, a new study finds.
Over time they build a more detailed
magnetic map by learning to recognise variations in the
strength and direction of the
field lines, which are angled more steeply towards the poles and flatter at the
magnetic equator.
Much like shifting sand,
magnetic fields slide slightly
over time, and their
strength also increases as one moves away from the equator, akin to latitude.
Subsequently, matter from the debris of the merger that swirls rapidly around the newly created new black hole has been modelled as amplifying the
strength of the combined
magnetic field left
over by the neutron stars after their merger
over the next 11 milliseconds.