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Joe Callingham

@astrojoe.bsky.social
4.3K followers 273 following 251 posts

Dutch-Australian | Astrophysicist | Head of the Square Kilometre Array (SKA) Science Group at ASTRON | Associate Professor at the University of Amsterdam

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Joe Callingham @astrojoe.bsky.social · 22/09/2026
A very exciting result dropped on arXiv a few days ago (by @kortizceballos.bsky.social, @whereisyvette.bsky.social and Edo Berger) - direct detection of radio emission from an exoplanet. If the result stands up to peer review, it is a giant leap forward! www.sciencenews.org/article/exop...
sciencenews.org
First radio waves seen from an exoplanet hint at otherworldly auroras
The gas giant Beta Pictoris b, about 63 light-years away, has the mass of 10 Jupiters and a magnetic field thousands of times as strong as Earth’s.
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Joe Callingham @astrojoe.bsky.social · 21/09/2026
An awesome paper by Ivey showing that maybe we need to think harder how we plan our observations when chasing after Solar-like bursts from active stars
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 18/09/2026
I'm finally so excited to share this! My second PhD paper, and what I've spent the last year working on ... We've discovered not one, BUT TWO, profile change events on the closest and brightest millisecond pulsar (MSP) to Earth! www.spaceaustralia.com/feature/disc... Let's jump ito a 🧵👇 🔭📡
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Tara Murphy @taramurphy.bsky.social · 09/09/2026
We are offering a new round of 4 Physics Foundation PhD scholarships @sydney.edu.au Available in any area of #physics or #astronomy. Please send to any students (domestic and international) who may be interested. Deadline 18th October. ⚛️ ☄️ www.sydney.edu.au/scholarships...
sydney.edu.au
Physics Foundation Scholarship
A stipend scholarship to support PhD students who are undertaking research within School of Physics, Faculty of Science at the University of Sydney.
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Joe Callingham @astrojoe.bsky.social · 08/09/2026
New Director of ASTRON Geoff Bower provides his welcome address
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Joe Callingham @astrojoe.bsky.social · 04/09/2026
ASTRON is excited to advertise two positions: the Bell Burnell Fellow and Postdoctoral Researcher in Space Weather. Both positions are due 6th of November. Let me know if you have any questions! Bell-Burnell Fellow Ad: aas.org/jobregister/... Radio Star Postdoc Ad: aas.org/jobregister/...
aas.org
Bell Burnell Postdoctoral Fellowship | American Astronomical Society
ASTRON, the Netherlands Institute for Radio Astronomy, is proud to invite applicants to apply for the Bell Burnell Postdoctoral Fellowship. The fellowship is named in honour, and with support of, Dame...
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Joe Callingham @astrojoe.bsky.social · 31/08/2026
The future of low frequency radio astronomy is space! It is only in space that we can unlock the last part of the electromagnetic spectrum that has yet to be explored. I am fortunate to play a minor part in this team lead by Joe Lazio for the MegaWave Radio Surveyor space mission.
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Joe Callingham @astrojoe.bsky.social · 23/08/2026
I find it amusing that I am now teaching Introduction to Programming for Astronomy and Astrophysics with Python at the University of Amsterdam... When I was never taught how to program in my uni degree (had to entirely self-learn). May God have mercy on the students.
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Joe Callingham @astrojoe.bsky.social · 22/08/2026
Off to Montreal for Dynamic Radio Skies Conference!
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Tara Murphy @taramurphy.bsky.social · 16/08/2026
We are advertising a Lecturer in Radio Astronomy continuing position at @sydney.edu.au! Looking for someone to broaden and complement our existing research in #RadioAstro, and teach undergraduate #Physics. usyd.wd105.myworkdayjobs.com/en-GB/USYD_E... Deadline October 11th
usyd.wd105.myworkdayjobs.com
Lecturer in Radio Astronomy
A full-time Level B continuing position, located on the Camperdown Campus at the School of Physics Exciting opportunity to join one of the leading physics schools in the country, with outstanding staf...
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Joe Callingham @astrojoe.bsky.social · 17/08/2026
Rarely in radio astornomy are results tested against conditions in a lab. However, the team out of Palo Alto have done the best job yet of creating the conditions of a solar coronal mass ejection in a lab. Fun result written up by @econover.bsky.social www.sciencenews.org/article/star...
sciencenews.org
Stars’ plasma spurts may be blocked by magnetic fields
The sun frequently flings plasma into space, but sightings of such eruptions on other stars are rare. Magnetic fields could explain why.
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Benjamin Pope @benjaminpope.bsky.social · 04/08/2026
I'm extremely proud of @breaky.bsky.social winning a Tall Poppy Award for her science and communication in Queensland! She's of three astronomers recognised this year - alongside the excellent Fiona Panther (WA) and Laura Driessen (NSW)!
aips.org.au
2026 Young Tall Poppy Science Award Winners - AIPS
Meet the 2026 Young Tall Poppy Science Award Winners – Australia's leading early-career researchers and science communicators.
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Joe Callingham @astrojoe.bsky.social · 16/07/2026
I am beyond excited about what the SKA Observatory will reveal to us about stars, planets, and whether life could be out there. The chapters written by the Cradle of Life Science Working Group really emphasises how much SKAO will be a game changer in astronomy.
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Joe Callingham @astrojoe.bsky.social · 10/06/2026
Tokyo inbound for a colloquium at NAOJ and Cool Stars conference!
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Tara Murphy @taramurphy.bsky.social · 17/04/2026
Excited to announce the first data release from our ASKAP Variables and Slow Transients survey is now available! doi.org/10.1017/pasa... This is a database of 6.4 million measurements of 0.5 million radio sources in our survey footprint. (By @ozgrav.bsky.social Iris de Ruiter) #RadioAstronomy
The VAST Extragalactic Survey footprint, showing the number of observations of each field. The sky map is plotted with J2000 equatorial coordinates in the Mollweide projection. The VAST Galactic survey is plotted in grey for reference. Typically, each field has been observed 10–11 times to date. 

Image from de Ruiter et al. (2026)
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Joe Callingham @astrojoe.bsky.social · 13/04/2026
Come to @api.uva.nl this Friday to find out how Video Killed the Radio Star!
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Joe Callingham @astrojoe.bsky.social · 02/04/2026
Sad news out of Australia for astronomy
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Joe Callingham @astrojoe.bsky.social · 01/04/2026
The students decided to redecorate my office while I was in my nth meeting today. Clearly, I have rested on my laurels this April Fool’s day.
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Nature @nature.com · 30/03/2026
Becoming a parent is much more detrimental to women’s academic careers than it is to men’s Read the full story: go.nature.com/4v4rxmQ
IMPACT OF PARENTHOOD ON UNIVERSITY EMPLOYMENT. Line graph shows how the probability of holding a research position changes from four years before to seven years after having children.
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Joe Callingham @astrojoe.bsky.social · 25/03/2026
Group photo of the Dutch SKA day!
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Joe Callingham @astrojoe.bsky.social · 25/03/2026
The Dutch SKAO day gets underway with the current Director General (for 9 more weeks) outlining the amazing progress of construction and commissioning in the project
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Joe Callingham @astrojoe.bsky.social · 12/03/2026
On my way to London to give a talk at a @royalastrosoc.bsky.social meeting! Hit me up if you would like to catch up. I will be around Victoria station.
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Joe Callingham @astrojoe.bsky.social · 24/02/2026
I worry for the students and postdocs that work with people that have given the majority of quotes in this piece. Like - are they just burning through grad students to write code but not do any critical thinking? www.nature.com/articles/d41...
nature.com
AI is threatening science jobs. Which ones are most at risk?
Data-analysis and modelling positions are already becoming obsolete, but hands-on experimentalists can breathe easy for now.
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Benjamin Pope @benjaminpope.bsky.social · 10/02/2026
Very happy to advertise a Postdoctoral Research Associate in Exoplanet Science position with me and Christian Schwab at Macquarie University in Sydney. We'll be working on applying machine learning & differentiable physics models to extremely precise radial velocity surveys.
mq.wd3.myworkdayjobs.com
Postdoctoral Research Associate in Exoplanet Science
PRIMARY DETAIL - Salary Package: $109,272 - $117,108 (HEW Level A.6-A.8) - plus 17% employer's superannuation contribution and annual leave loading. - Full time, 3 year fixed-term role - Macquarie Uni...
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Joe Callingham @astrojoe.bsky.social · 03/01/2026
We are at an exciting point in the SKA Observatory project with lots of rapid changes. The team at Nature Astronomy have perfectly captured the excitement we all have, but also the long path we still have to walk. Nice work @drpaulwoods.bsky.social and B. Kim. www.nature.com/articles/s41...
nature.com
A radio observatory for the ages - Nature Astronomy
After decades of planning and several scheduling setbacks, the Square Kilometre Array is around the corner. While the radio astronomy community fervently prepares to use the telescope of a generation,...
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Joe Callingham @astrojoe.bsky.social · 08/12/2025
Awesome news @profsera.bsky.social! Cambridge and the UK are lucky to get you.
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Joe Callingham @astrojoe.bsky.social · 20/11/2025
This spectacular stellar system never ceases to amaze! Amazing science Ryan, Yinuo, Ben and team! science.nasa.gov/missions/web...
science.nasa.gov
Webb First to Show 4 Dust Shells 'Spiraling' Apep, Limits Long Orbit - NASA Science
NASA’s James Webb Space Telescope has delivered a first of its kind: a crisp mid-infrared image of a system of four serpentine spirals of dust, one expanding
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Nature @nature.com · 13/11/2025
Nature research paper: Radio burst from a stellar coronal mass ejection go.nature.com/3JyIByp
go.nature.com
Radio burst from a stellar coronal mass ejection - Nature
An analogue to a type II burst from the early M dwarf StKM 1-1262 exhibits identical frequency, time and polarization properties to fundamental plasma emission from a solar type II burst.
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ESA Space Science @science.esa.int · 12/11/2025
📣 For the first time ever, scientists have confirmed seeing a giant explosion on a star other than our own! Our XMM-Newton observatory and the LOFAR telescope contributed to making this long sought-after discovery 👉 www.esa.int/Science_Expl... 🔭 🧪 ☄️ ☀️ 1/
An artist’s impression of a large red star releasing a bright, explosive burst of light. Swirling red and orange patterns surround the star, suggesting intense activity.

In the background, a smaller blue planet appears with a faint, wispy trail extending away from it, indicating its atmosphere being blown off. The scene is set against a dark space backdrop dotted with stars.
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Joe Callingham @astrojoe.bsky.social · 12/11/2025
Thrilled to announce our new Springer Nature paper is now live! We’ve tuned into a massive stellar storm on the radio! 🌟📡
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Joe Callingham @astrojoe.bsky.social · 11/11/2025
To message or not to message aliens? This short video by the BBC is excellently produced with fun visuals. www.bbc.com/videos/crl24...
bbc.com
Should we try to communicate with aliens?
Many experts think intelligent life is likely to exist elsewhere in the Universe. Should we try to connect with them?
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Joe Callingham @astrojoe.bsky.social · 31/10/2025
One of the worst reference letter submitting experiences is with the International Max Planck Research School on Astrophysics. They ask you absurd questions outside of just uploading your letter, such as asking for arbitrary rankings of the student. There is no clarity how such information is used.
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astronomie.nl @astronomienl.bsky.social · 23/10/2025
Vidi voor astronomen @astrojoe.bsky.social en Matus Rybak www.astronomie.nl/nieuws/vidi-...
astronomie.nl
Vidi voor astronomen Joe Callingham en Matus Rybak
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Joe Callingham @astrojoe.bsky.social · 23/10/2025
I am privileged to be one of only two astronomers awarded an NWO (Dutch Research Council) Vidi grant this year! I will be using the 850,000 euros to create space weather reports of distant worlds. The grant will be hosted by @astronnl.bsky.social and @api.uva.nl www.astron.nl/vidi-granted...
astron.nl
Vidi granted to Joe Callingham to create space weather reports for distant worlds | ASTRON
Dr. Joe Callingham, Head of ASTRON's SKA Science Group, has been awarded a prestigious Vidi grant from the Dutch Research Council (NWO). The grant, worth up to €850,000, will enable him to establish a...
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Joe Callingham @astrojoe.bsky.social · 16/10/2025
Check out this awesome work by Ben and his team! Really amazing stuff they can pull out of James Webb
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Joe Callingham @astrojoe.bsky.social · 07/10/2025
More cool state quantum work awarded the Nobel!
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Joe Callingham @astrojoe.bsky.social · 01/10/2025
Are you looking to do a PhD in astronomy? Are you interested in radio stars and exoplanets? Then you should apply to do a PhD at @api.uva.nl with me! You can find more about the exciting project below. Applications are due 3rd of November! api.uva.nl/vacancies/ph...
api.uva.nl
PhD research topics - Anton Pannekoek Institute for Astronomy
PhD research topics
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Joe Callingham @astrojoe.bsky.social · 01/10/2025
Universities are coming to a crossroads with demographic shifts, bloated administrations, and the raise of LLMs. What will they do in response? www.newyorker.com/culture/open...
newyorker.com
Should College Get Harder?
A.I. is coming for knowledge work, and yet college seems to be getting easier. Does something need to change?
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Joe Callingham @astrojoe.bsky.social · 24/09/2025
What an absolutely amazing result. May science erradicate this terrible disease www.bbc.com/news/article...
bbc.com
Huntington's disease successfully treated for first time
One of the most devastating diseases finally has a treatment that can slow its progression and transform lives, tearful doctors tell BBC.
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Joe Callingham @astrojoe.bsky.social · 18/09/2025
Are you excited about playing with some of the coolest radio telescopes in the world? Want to discover something new about the Universe? What independence to explore novel ideas? Well then I have the job for you! At @astronnl.bsky.social we are advertising for the Bell Burnell Fellowship.
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Joe Callingham @astrojoe.bsky.social · 10/09/2025
It would be absolutely awesome if Australia formally joined Horizon Europe. I am sure we would get more back than we put in based on the calibre of scientists in the country.
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Joe Callingham @astrojoe.bsky.social · 02/09/2025
I have a desk companion today
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Joe Callingham @astrojoe.bsky.social · 27/08/2025
A sentiment I agree with!
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Joe Callingham @astrojoe.bsky.social · 04/08/2025
At CSIRO today to talk all about wide-field radio monitors. Exciting times ahead. Thanks Josh Pritchard for organising. Great opening talk by Ron Ekers on the history and future of all-sky monitors
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Joe Callingham @astrojoe.bsky.social · 30/07/2025
I am enjoying learning about all things that go *bang* in the radio sky in Sydney this week. Thanks Dougal, Tara and team for organising!
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Joe Callingham @astrojoe.bsky.social · 30/07/2025
A great result! Michele is awesome
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Joe Callingham @astrojoe.bsky.social · 25/07/2025
Once more to the old country. This time for The Dynamic Radio Sky Conference. Will be in Australia for 2 weeks (visiting CSIRO and USyd).
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Joe Callingham @astrojoe.bsky.social · 22/07/2025
What an amazing image and a fantastic result by @astroryan.bsky.social. This JWST image casts a completely new light on the first image we made of this star in 2019 with @eso.org's VLT. Well done Ryan and team!
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Joe Callingham @astrojoe.bsky.social · 22/07/2025
Halifax completed another module in his PhDog - a visit to a radio telescope (along with some tinkering)
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Tara Murphy @taramurphy.bsky.social · 16/07/2025
Last chance to register for our upcoming conference "The Dynamic Radio Sky 2025" Join us @sydney.edu.au from July 28th to August 1st, 2025 to discuss radio transients of all kinds! #RadioAstronomy #AstroSci
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