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ellarien.bsky.social
@ellarien.bsky.social
Helioseismologist, SFF reader.
Also ellarien on dreamwidth, deviantart, ohai.social. Mostly harmless, but too shy to post much.
November 17, 2025 at 8:24 PM
www.sr.bham.ac.uk/nam2026/sess...

Session proposals are now open for the 2026 UK National Astronomy Meeting at the University of Birmingham, with a 19th December deadline. #astronomy #heliophysics #uknam2026
November 17, 2025 at 7:02 PM
Happy Fountain Pen Day!🖋️
November 7, 2025 at 8:01 PM
Reposted
Very nice to see ngGONG move forward! GONG is a decades-old global instrument on which the Sun never sets, to observe the Sun around the clock. It provides very important continuous monitoring of space weather and allows us to image the interior of the star itself. ☀️
NSO Receives Funding from NSF to Design the Next-Generation Solar Observing Network to Advance Solar Science and Space Weather Forecasting - NSO - National Solar Observatory
The U. S. NSF National Solar Observatory will design a Next-Generation Ground-based Solar Observing Network (ngGONG) advancing space-weather forecasting.
nso.edu
September 25, 2025 at 1:08 PM
Reposted
Solar Cycle Update:

Solar Cycle 25 is still on the downtrend, but July saw a nice uptick in sunspot number. The yellow lines are daily sunspots, blue are monthly, and the red is the smoothed number.

#heliophysics
August 1, 2025 at 4:06 PM
Reposted
Although active sunspot region 3964 is stealing the spotlight today, AR 3961 located in the southeast quadrant continues to expand and is quietly becoming a behemoth. This region could eventually become a flare producer as its magnetic complexity continues to evolve.
January 17, 2025 at 9:10 PM
Reposted
It's a chilly day out there today! ❄️🌨️

But not to worry, tomorrow we'll be bringing the heat when we host two Specialist Discussion Meetings 😎

With the Sun approaching the maximum of Solar Cycle 25, one will look at when the cycle will peak and how active the Sun will be ☀️
January 9, 2025 at 12:05 PM
Reposted
As well as the #RASAwards2025, there will also be two Specialist Discussion Meetings taking place on Friday.

They are titled 'Dynamos, Dynamics, and the Solar Cycle at Cycle 25 Maximum' and 'Gravitational Wave Analysis in the Era of Machine Learning'.

Find out more at: https://buff.ly/4hmNPsn
January 7, 2025 at 3:06 PM
I think the UK localization in my Windows 11 24H2 has gone ever so slightly awry!
December 19, 2024 at 7:31 PM
Last day for abstracts for this one-day meeting on 10th January 2025! Join us at the RAS to discuss the solar cycle and dynamo.☀️ #heliophysics

www.ras.ac.uk/events-and-m...
Dynamos, Dynamics, and the Solar Cycle at Cycle 25 Maximum
RAS Meetings | Friday, 10 of January 2025 - 10:30 | Dynamos, Dynamics, and the Solar Cycle at Cycle 25 Maximum
www.ras.ac.uk
December 16, 2024 at 9:40 AM
Reposted
If you study #heliophysics then you might want to see this.☀️
We (Rachel Howe, Anne-Marie Broomhall, Paul Bushby and me) are hosting a @royalastrosoc.bsky.social discussion meeting in London on 10 Jan, on "Dynamos, Dynamics, and the Solar Cycle at Cycle 25 Maximum. "

Abstract deadline is 16 Dec and the link is: docs.google.com/forms/d/e/1F...
November 30, 2024 at 2:33 PM
Reposted
I've been running a solar flux/sunspot number reporting bot at @jj1bdx.bsky.social. This bot collects and sends the report every three hours. 🧪
10.7cm #Solar Flux Index (SFI): 2024-11-19T22:00:00 : 156
Estimated #SSN from #SFI: 2024-11-19T22:00:00 : 146
Estimated Kp: 2024-11-20T00:20:00 : 0
EISN (observed SSN): 2024-11-19T00:00:00 : 125
SFI/Kp source: NOAA SWPC
EISN source: WDC-SILSO, Royal Observatory of Belgium, Brussels
November 20, 2024 at 12:36 AM
Reposted
🔭 Undulatus Clouds over Las Campanas Observatory - ©Yuri Beletsky

apod.nasa.gov/apod/ap24111...
November 19, 2024 at 8:00 AM
Reposted
Some of today’s #sunspots. The pic covers about 1/8th of the #solar surface facing us. 🔭 🧪
October 27, 2024 at 11:49 PM
Bluesky now has over 10 million users, and I was #2,301,501! (After a few months on the waitlist, and not long before the invite system was dropped.) Stilll enjoying Bluesky nearly ten months later.
September 17, 2024 at 10:14 AM
Reposted
As we head towards solar max, there are signs that Cycle 26 imminent. A recent study out of the University of Birmingham shows that key signs, known as solar torsional oscillations may already be underway. Here’s our post on the study for @universetoday - www.universetoday.com/167835/the-n...
August 17, 2024 at 1:37 PM
Reposted
The huge active region 3780 seems to have grown and intensified a bit since I snapped its photo yesterday. #Astronomy #Astrophotography
August 7, 2024 at 4:37 PM
Reposted
Beyond the aurorae: How solar flares spill out across the Solar System. 🔭 🧪 www.bbc.co.uk/future/artic...
Beyond the aurorae: How solar flares spill out across the Solar System
The Sun is extremely active right now, blasting the Earth with the biggest solar storms in 20 years. This is what it is doing to the rest of the Solar System.
www.bbc.co.uk
July 7, 2024 at 7:20 AM
Reposted
I’ve been reading that a very large sunspot should appear on the Sun’s eastern limb early next week which sounds intriguing . Apparently it’s large enough to affect the way the Sun vibrates. See here ➡️ www.spaceweather.com 🔭
SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
www.spaceweather.com
June 23, 2024 at 2:27 PM
Reposted
Did you know that the Sun's equator spins once every 24.5 days which is faster than it's poles that rotate only once every 35 days? 🧪

Researchers from Max-Planck-Institute of Solar Research have now developed a model to explain this lag.

www.mps.mpg.de/long-period-...
May 30, 2024 at 6:56 AM
Can you believe this is in the centre of a city?
May 14, 2024 at 12:33 PM
Reposted
Google Solar Cycle xkcd.com/2930
May 9, 2024 at 4:17 PM
April 10, 2024 at 8:10 AM
Wood anemone season.
March 30, 2024 at 8:01 PM