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Call for Guest Investigators

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).

First solar observations with SPADE

The SPADE array installed in Humain
First observation of SPADE
CALLISTO spectrum
SPADE observes Type IIIs
SPADE observes stria bursts

In the past couple of weeks, the radio-astronomy team has worked relentlessly on a new setup and calibration procedure for the SPADE instrument.

PITHIA-NRF Trans-National Access Open Call

PITHIA-NRF launches its seventh call. Apply and come visit the STCE!

NOAA 3784 joins the club!

NOAA 3784 joined the club of X-class flare producing regions by unleashing an X1.1 on 14 August.

Another X-class flare

NOAA 3777 produced an X1.3 flare on 8 August. The associated CME has an earth-directed component. ***UPDATED (3)***

Solar hemispheric asymmetry

Driven by solar activity in especially the southern solar hemisphere, sunspot numbers reached their highest monthly values since December 2001.

The double X-class flare

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***

The best of... 2023!

An overview and movie of some spectacular solar and space weather events in 2023 are available at the STCE's solar cycle highlights webpage.

X1 flare

An M9.9 flare and an X1.5 flare were observed from the same active region NOAA 3766 on resp. 28 and 29 July.

Powerful eruption on the Sun's farside

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***

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