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Understanding Sunspots. What is a Sunspot?. The Sun’s Visible Surface. The Lower Atmosphere. The Sun in Hydrogen- a. The Upper Atmosphere. A Typical Sunspot in “White Light”. Sunspot Detail. Sunspot Model. Objects that are hotter are brighter. Which bulb is hotter? Which

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Understanding Sunspots

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Understanding sunspots

Understanding Sunspots

What is a sunspot

What is a Sunspot?

The sun s visible surface

The Sun’s Visible Surface

The Lower Atmosphere

The sun in hydrogen a

The Sun in Hydrogen-a

The Upper Atmosphere

A typical sunspot in white light

A Typical Sunspot in “White Light”

Sunspot detail

Sunspot Detail

Sunspot model

Sunspot Model

Objects that are hotter are brighter. Which bulb is hotter? Which

is hotter, the sun’s surface or a sunspot? How do you know?

So sunspots are way cool

So, sunspots are way cool!

But, what causes sunspots?

Like planet earth our sun has a strong magnetic field

Like planet Earth, our Sun has a strong magnetic field

Magnetic winding

Magnetic Winding

The sun rotates faster at its equator than at its poles. The sun’s

strong magnetic field gets wound up causing part of the fields to rupture the surface where they cause sunspots.

Magnetic fields make cool zones

Magnetic fields make cool zones.

Fast-moving charged particles are deflected by magnetic fields.

The magnetic fields of sunspots deflect hotter gases allowing

only cooler gases that experience less of this deflective force.

The 11 year sunspot cycle

The 11-Year Sunspot Cycle

Butterfly diagram

Butterfly Diagram

Associated with sunspots are flares

Associated with sunspots are flares…

Prominences and

prominences, and…

Coronal mass ejections

coronal mass ejections!!!

These cause

the auroras

that we see

on Earth.

Why do we have sunspots

Why do we have sunspots?

What does

magnetism have

to do with


Why do we have a sunspot cycle?

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