DayStar Filters SOLAR SCOUT Manuel - Sayfa 11

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Spicules
dominate
the chromospheres in
non-active
and
have
studied exhaustively.
They
are
visible, last only about
15 minutes, and resemble a "burning prarie". Some jets
can be seen shooting 10,000 km up from the Sun's limb at velocities of
about 30km/sec. Studied exhaustively, they present a number of
observing challenges, as they are too small to resolve and move so
quickly as to present wing-shift challenges.
Active Regions are a
concentration
magnetic acitivity with
several
types
features contained in
a close area.
Field
Transition
Arches
connect
P
spots – elements of
opposite
Inside
an
region,
sunspots
originally linked by a
FTA, a shear boundary forms. Field Transition Arches are different from
filaments in that they are thin and not very dark. The
FTA usually has plage or granular structure underneath.
Plages: Most of the
active region area is
occupied by plage.
Considerable
atmospheric
takes place in the
plage. It is bright in
everything from Halpha to the Calcium H and K lines. This heating is
thought to account for an absence of spicule. While absent over plage,
spicule are prominent around its edges.
regions
been
barely
of
of
(FTA's)
and
F
polarity.
active
where
are
heating