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X-flare Activity

The SIDC has sent an alert message on October 19 at 18:07 UTC:

An X1.2 flare took place a few minutes ago (Start: 16:27 , Peak: 16:50 , End: 17:20UTC) in active region Catania 065 - NOAA 10484 (position N06E61). This event will affect radio propagation and may be followed by other M-class flares, and maybe another X-class flare in the next few hours and days.

A major solar flare and a two-step prominence eruption on 23 July

A beautiful and puzzling full halo CME on July 16

Above is a picture from the LASCO C2 coronagraph showing a full halo coronal mass ejection (CME) surrounding the solar disk. This CME left the Sun on July 16 around 16UT. Its origin and direction were puzzling. It was not certain whether the CME was directed straight towards Earth or was directed away from us.

The Sun is very active!

Severe geomagnetic storm on November 6

A beautiful Coronal Mass Ejection

Although solar activity is generally low these days, beautiful Coronal Mass Ejections can still be seen frequently, such as the one depicted here, which happened on Jul 23. Enjoy the movie from the C2 field of view, made by the LASCO instrument on board the SOHO spacecraft.

The Sun stages a CME show

Watch the Sun blast off a streamer type plasma cloud in the corona by shooting a fast CME through it.
Images and movies were made on 6-7 May 2001 by the LASCO instrument on board the SOHO spacecraft.

C2 field of view

NOAA active region 9393, the largest sunspot group of the current cycle

Did we pass solar maximum?

The monthly sunspot index shows a continuous decay since July (Provisional values for July: 169.1, August: 130.5, September: 109.9). Meanwhile, different prediction methods are disagreeing whether the cycle 23 is still rising or not. All this suggest that we are now very near the solar maximum.

Active region 9169 the largest sunspot in 9 years

Active region 9169, the largest sunspot in 9 years, is rotating towards the center of the Sun's visible disk. Magnetic fields above the spot have a tangled beta-gamma-delta configuration which is likely to trigger violent activity in the coming days.

The Sun on September 18 (top left), 21, and 24 (large image). Credits: Franky Dubois

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