A notable arch prominence
was on the NE limb on Sep 4 but was not present on Sep 5.
and filaments supply most of the material released in coronal mass ejections, vast eruptions from the Sun's atmosphere that can cause space weather and create geomagnetic storms on Earth.
There's no comparison in grandeur between such pip-squeak arcs and the mighty solar prominences
that Bellan is trying to replicate.
The difficulty lies in understanding how solar prominences
condense from the sun's corona.
Two bright complex prominences
were seen on the E limb on May 1, also described as a loop by some observers, and a striking loop prominence
was seen on the NE limb on May 2.
Until that day, none of the several hundred extended prominences
photographed over nine years by Solar Max's coronagraph/polarimeter had been seen returning, says the instrument's chief experimenter, Arthur J.
This was another month with few prominences
of particular note to report.
A medium sized pyramid was on the SE limb just south of a smaller hearth consisting of five small prominences
were assessed to reach heights o f84,000km and 74,000km respectively, the SE prominence
still being visible on Oct 17 & 18.
On Sept 1 three large prominences
were seen, one on the NW limb reaching an approximate height of 74,000km, another on the SW limb reaching 84,000km and the third on the SE limb reaching about 112,000km in height.
On June 3, many prominences
were evident, the largest on the NW limb reaching a height of approximately 84,000km.
Several significant prominences
have been seen during this period including one 'hedgerow'-type prominence
in 2011 August which extended around the northeastern solar limb for approximately 326,000km.
The start of the month produced only small prominences
, none of significance.
Multiple arch prominences
were seen on Mar 1 at SW -20[degrees] to -30[degrees].
hearths were visible on Dec 6, one consisting of two pyramid shaped prominences
with a column between and the other a hedgerow further south.