1 The Sun in STEREO K. Murawski Department of Astrophysics, UMCS

2 Inside the Sun The Core –nuclear fusion Radiative Zone –ubiquity of photons Convective Zone: –hot plasma rises

3 Temperature on the Sun

As The Sun Turns

A differential rotation

Rotation Inside The Sun

The Sun’s Magnetic Personality

Magnetic Fields And Sunspots

Flash In The Sun

10 Magnetic Loops

11 The Stormy Sun

Launched on October 25, 2006

STEREO in space

Solar Eclipse

The Sun in ultraviolet light shows prominences, sliding plasma and tiny spikes darting up just above the Sun’s surface, seen best along its edge

The erupting prominence seen in UV light

The Sun in just one wavelength of UV light

A 3D composite of the Sun in UV light: the brighter areas are active regions; darker areas are coronal holes

The Sun in one wavelength of UV light: the brighter loops above an active region

21 Solar magnetic field

A 3D composite of the Sun in UV light: the brighter areas are active regions: darker areas are coronal holes

A 3D composite of the Sun in UV light: the active region with curved magnetic field lines

The Sun in one wavelength of UV light: the eruptive prominence on the upper right

The Sun in one wavelength of UV light: the bright loops above an active region.

Consists of different layers (onion-like structure) –hot core – nuclear fusion –radiative zone – many photons –convective zone - hot plasma rising – atmosphere (photosphere, chromosphere, corona) The Sun’s peculiar rotation Magnetic seasons of the Sun The Sun is mistic