80 years ago, the Allies liberated Brussels, and this event did not go unnoticed by our solar observers!
SIDC News
Once more, the solar physics team of the Royal Observatory of Belgium invites external researchers to join in the data exploitation of its space telescopes on the PROBA2 microsatellite (SWAP, LYRA) and on Solar Orbiter (EUI).
In the past couple of weeks, the radio-astronomy team has worked relentlessly on a new setup and calibration procedure for the SPADE instrument.
NOAA 3784 joined the club of X-class flare producing regions by unleashing an X1.1 on 14 August.
NOAA 3777 produced an X1.3 flare on 8 August. The associated CME has an earth-directed component. ***UPDATED (3)***
Driven by solar activity in especially the southern solar hemisphere, sunspot numbers reached their highest monthly values since December 2001.
An X1.7 flare was produced on 5 August at 13:40UTC. It was followed by an X1.1 flare at 15:27UTC produced by a different active region. ***UPDATED***
An M9.9 flare and an X1.5 flare were observed from the same active region NOAA 3766 on resp. 28 and 29 July.
Old NOAA 3738 produced a very strong X-class flare late on 22 July. Solar Orbiter's STIX instrument indicates this might have been an X14 flare. The associated CME is heading away from Earth, towards Solar Orbiter. ***UPDATED***
Preliminary sunspot numbers during last week were the highest in 22 years.
On 20 May, instruments on board Solar Orbiter observed what was most likely the strongest solar flare so far during SC25.