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Jan Gieseler

@jangieseler.bsky.social
110 followers 129 following 42 posts

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.

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Jan Gieseler @jangieseler.bsky.social · 22/09/2026
BepiColombo measured Mercury's particle bombardment up close www.utu.fi/en/news/news...
utu.fi
BepiColombo measured Mercury's particle bombardment up close
The results help assess the impact of space storms on Mercury's surface and on Earth's atmosphere.
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Reposted by Jan Gieseler
Nature Astronomy @natastron.nature.com · 08/09/2026
Planetary shielding and surface precipitation of solar energetic particles during BepiColombo’s close Mercury flyby ☄️
dlvr.it
Planetary shielding and surface precipitation of solar energetic particles during BepiColombo’s close Mercury flyby
Nature Astronomy, Published online: 08 September 2026; doi:10.1038/s41550-026-02914-6BepiColombo’s flyby at just 165 km from Mercury observed sustained precipitation of energetic solar protons and electrons onto the planet’s surface, with potentially long-term impact on its weathering and mineralogy.
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Jan Gieseler @jangieseler.bsky.social · 09/07/2026
Am I the only one receiving @egu.eu's email on autumn elections over and over again? 🤔
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Jan Gieseler @jangieseler.bsky.social · 15/06/2026
📢 DASH/IHDEA 2026 registration & abstract submission are now open! 🗓️ Oct 5–9, 2026 | Dublin, Ireland 📝 Abstract deadline: 29 July 2026 📋 Registration closes: 4 September 2026 🔗 indico.dias.ie/event/2/ ☀️ #Heliophysics #DASH #IHDEA
Promotional banner for DASH + IHDEA 2026. The background shows a stylized Dublin skyline at dusk, featuring the Samuel Beckett Bridge, with a large artistic rendering of the Sun dominating the left side and subtle data visualization overlays throughout. A satellite is visible in the top right corner. Text reads: "DASH + IHDEA 2026 will be held in Dublin, Ireland! 5–9th October 2026, Royal Irish Academy of Music, Dublin." Logos for DIAS, DASH, and IHDEA are shown in the bottom right corner.
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Jan Gieseler @jangieseler.bsky.social · 29/05/2026
Looking for doing a PhD in #heliophysics? ☀️ Our group at @utu.fi in Turku 🇫🇮 is hiring for a multidisciplinary project that merges spacecraft data with artificial intelligence to solve open questions on the generation of solar energetic particle (SEP) events! ats.talentadore.com/apply/doctor...
ats.talentadore.com
Doctoral Researcher / Project Researcher / Research Assistant - fixed-term position in Space Physics
The Space Research Laboratory (SRL) at the Department of Physics and Astronomy in the University of Turku invites applications for a three-year Project Researcher / Doctoral Researcher / Research Assi...
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Reposted by Jan Gieseler
Adrian Price-Whelan @adrian.pw · 20/04/2026
A cool demonstration of @astropy.org + SunPy functionality with Artemis II! sunpy.org/posts/2026/a... 🔭
A coordinate-aligned view of the solar eclipse viewed by the Artemis II mission.
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Jan Gieseler @jangieseler.bsky.social · 02/04/2026
📢 SPEARHEAD School & Workshop 2026 – Registrations Open! ☀️ We are excited to announce the SPEARHEAD School, taking place 4–8 September 2026 in Kiel, Germany, hosted by bsky.app/profile/uni-...
Advertisement poster for school & workshop, showing same info as in post on top of the skyline of the city Kiel
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Reposted by Jan Gieseler
uksolarphysics.bsky.social @uksolarphysics.bsky.social · 12/02/2026
Save the date! 2026 DASH/IHDEA Meeting The 2026 DASH / IHDEA Meeting will take place 5-9 October 2026, hosted by the Dublin Institute for Advanced Studies (DIAS) in Dublin, Ireland, with virtual participation supported. The DASH (Data Analysis and Software in Heliophysics) and IHDEA (International…
uksolphys.org
Save the date! 2026 DASH/IHDEA Meeting
The 2026 DASH / IHDEA Meeting will take place 5-9 October 2026, hosted by the Dublin Institute for Advanced Studies (DIAS) in Dublin, Ireland, with virtual participation supported. The DASH (Data Analysis and Software in Heliophysics) and IHDEA (International Heliophysics Data Environment Alliance) meetings bring together scientists and software developers working on data analysis, algorithms, community software, data systems, and standards across heliophysics - from the Sun to geospace and beyond.
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Reposted by Jan Gieseler
ESA Space Science @science.esa.int · 01/09/2025
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 🔭 🧪☀️
Infographic showing how the Solar Orbiter spacecraft traces superfast electrons back to their sources on the Sun. The Sun is depicted on the left, with colored dots representing sources of energetic electrons from solar flares (blue) and coronal mass ejections (red). Curved lines illustrate magnetic field lines along which electrons travel from these events toward the Solar Orbiter spacecraft, shown on the right against a starry background. Text explains that more than 300 bursts of 'Solar Energetic Electrons' were observed between November 2020 and December 2022, allowing scientists to connect electrons detected in space with their origins on the Sun.
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Jan Gieseler @jangieseler.bsky.social · 28/08/2025
Come join us @utu.fi for a Postdoc to investigate solar energetic particles using AI! ☀️ #heliophysics #spaceweather ats.talentadore.com/apply/avaruu...
ats.talentadore.com
Postdoctoral Researcher of Data Analytics in Space Physics
The Department of Computing and the Department of Physics and Astronomy at the University of Turku are looking for a postdoctoral researcher of data analytics in space physics. The selected person wil...
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Jan Gieseler @jangieseler.bsky.social · 06/06/2025
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
Flyer with solar eruptions in the background and in the foreground the following: SPEcification, Analysis & Re-calibration of High Energy pArticle Data (SPEARHEAD) Workshop #2. June 10-12, 2025. Hybrid participation.
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Jan Gieseler @jangieseler.bsky.social · 02/04/2025
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.
Screenshot of a web search for CDAWeb, giving a website preview with the following text: "April 2, 2025: All SPDF services (CDAWeb, SSCWeb, OMNIWeb, etc.) will be unavailable on Wednesday 4/2/2025 8am - 10am EDT. Please plan your use of the services accordingly."
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Jan Gieseler @jangieseler.bsky.social · 04/02/2025
This is so surreal...
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Jan Gieseler @jangieseler.bsky.social · 22/01/2025
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? 🤔
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Reposted by Jan Gieseler
Living Reviews | Solar Physics @livingrev-solphys.bsky.social · 09/01/2025
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)
Aditya-L1 - artist's impression
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Jan Gieseler @jangieseler.bsky.social · 09/01/2025
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!
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Jan Gieseler @jangieseler.bsky.social · 17/11/2023
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
arxiv.org
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...
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Reposted by Jan Gieseler
Jennifer Lynn Bartlett @bartlettastro.bsky.social · 10/11/2023
#Astronomers, please tell #NASA #Astrophysics Data Service what you think! 🔭🧪 Something bugging you? Something new you want? Something you like? If so, complete this survey! We value your perspective! (forms.gle/f3cpiBV1k2eP...) #SciXplorer
forms.gle
Science Community Outreach Survey
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Jan Gieseler @jangieseler.bsky.social · 03/11/2023
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! 🙂
Scientific plot showing a top-view of the inner heliosphere
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Reposted by Jan Gieseler
Mathew Owens @mathewjowens.bsky.social · 10/10/2023
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.
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