Jan Gieseler
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jangieseler.bsky.social
Jan Gieseler
@jangieseler.bsky.social
Space physicist working at University of Turku @utu.fi on energetic charged particles measured by the heliospheric spacecraft fleet, using and providing open-source tools. gieseler.me. He/him.
Pinned
A little update to solar-mach.github.io You can now use single letters to indicate the different spacecraft. Might be faster to recognize them this way, instead of giving them numbers that need to be looked up in the legend! 🙂
Reposted by Jan Gieseler
Our #SolarOrbiter has split the flood of energetic electrons flung out into space from the Sun into two groups, tracing each back to a different kind of outburst from our star 👉 www.esa.int/Science_Expl...
1/3 🔭 🧪☀️
September 1, 2025 at 7:08 AM
Next week, our SPEARHEAD workshop takes place in Rome & hybrid (free registration required)! This project harness high-energy data from space missions & ground-based detectors, offering new data sets, catalogs, and tools! More information: spearhead-he.eu/2nd-spearhea... #heliophysics #spaceweather
June 6, 2025 at 2:34 PM
In case someone else from #heliophysics is wondering why CDAWeb, SSCWeb, or OMNIWeb are not working for them today: There is a planned downtime until 10am EDT.
April 2, 2025 at 12:38 PM
This is so surreal...
Fellow NSA - National Security Agency veterans. Look at what’s happened at the National Cryptologic Museum up at NSA. /1
February 4, 2025 at 9:19 PM
I hate filling out doodle.com since it has become so zoomed-in like it wants to be used on a 2'' display... I know that there are alternatives Like when2meet.com, but that doesn't help when replying to requests. Does anyone know if there is some Userscript or alternative interface for doodle.com? 🤔
January 22, 2025 at 6:24 PM
Reposted by Jan Gieseler
The Indian solar mission #AdityaL1 ☀️ has made their data freely accessible through the ISSDC website. More data will be available following lock in periods.

Aditya-L1 Mission: www.issdc.gov.in/adityal1.html
ISRO Science Data Archive: pradan1.issdc.gov.in/al1/

(via Dibyendu Nandi @ydnad0 on X)
January 9, 2025 at 9:36 AM
All versions of Solar-MACH are not working at the moment because #JPL Horizons services are unavailable, possibly due to the #LAFires. Stay safe everyone!
January 9, 2025 at 9:39 AM
Repost from "that place": I. C. Jebaraj's new paper on a relativistic electron beam at an interplanetary shock provides understanding to this phenomenon comparing observations by Solar Orbiter to modelling. arxiv.org/abs/2311.05765
Relativistic electron beams accelerated by an interplanetary shock
Collisionless shock waves have long been considered amongst the most prolific particle accelerators in the universe. Shocks alter the plasma they propagate through and often exhibit complex...
arxiv.org
November 17, 2023 at 1:53 PM
Reposted by Jan Gieseler
#Astronomers, please tell #NASA #Astrophysics Data Service what you think! 🔭🧪
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November 10, 2023 at 1:25 PM
A little update to solar-mach.github.io You can now use single letters to indicate the different spacecraft. Might be faster to recognize them this way, instead of giving them numbers that need to be looked up in the legend! 🙂
November 3, 2023 at 4:10 PM
Reposted by Jan Gieseler
There's a slow ebb of space-physics folk moving over to this site. I'm going to try and collection new arrivals into a single thread (as there's no lists?), so that we can find each other.
October 10, 2023 at 10:14 AM