Rob Kavanagh

Our poster highlighting the discovery pathways for brown dwarfs and exoplanets with the SKA for the SKA science meeting in Görlitz next week!

The full publication can be found over at A&A: www.aanda.org/articles/aa/...

GitHub - robkavanagh/magnetic-geometry-retrieval: Magnetic geometry retrieval framework presented in Kavanagh et al. (2024). Magnetic geometry retrieval framework presented in Kavanagh et al. (2024). - robkavanagh/magnetic-geometry-retrieval

The framework was designed to be easily adaptable to different datasets, and can accept data from multiple frequency bands. It is available on my GitHub: github.com/robkavanagh/...

One interesting application of the framework is that it can be used to monitor magnetic cycles. Re-applying the framework to earlier data, we find evidence that the magnetic obliquity increases by 30 degrees over the course of ~6 months! This provides insight into the interior dynamo and structure.

ECM emission is characterised by its beam pattern, resembling a cone centered on the magnetic field line. By watching these cones come in and out of view, we can extract the underlying magnetic geometry.

Our recent work has just been published in A&A! We developed a retrieval framework for the large-scale magnetic fields of objects emitting radio bursts driven by the electron cyclotron maser (ECM) instability. We applied it to the brown dwarf J0623, and found that it has a large magnetic obliquity!

Unraveling the magnetic fields of (sub)-stellar systems Cool Stars 22 splinter session

Delighted to announce that our Cool Stars splinter on (sub)-stellar magnetospheres is now open for abstract submission! The deadline is March 12th at 23:59 UTC. Details below!

cs22substellar.github.io

11th BCool meeting 11th BCool meetingImage: Allison LiThe 11th Bcool meeting will take place from April 9-11 2024 at ASTRON in the Netherlands, situated in the lush Dwingelderveld National Park. The aim of this meeting is to strengthen links between the worlds of stellar magnetism and radio astronomy. The scope of the meeting covers both observations and theory in topics such as:magnetic fields of stars, brown dwarfs, and planetsdynamo processesstellar winds and coronal mass ejectionsstar-planet...

Delighted to announce that the next Bcool meeting take place from April 9-11th 2024 at ASTRON! The deadline for registration and abstract submission is March 8th. Details: indico.astron.nl/e/bcool2024

wow they are SO far away!

Exoplanets Could Help Us Learn How Planets Make Magnetism | Quanta Magazine New observations of a faraway rocky world that might have its own magnetic field could help astronomers understand the seemingly haphazard magnetic fields swaddling our solar system’s planets.

I had a nice chat recently with @astrojonny.bsky.social about hints of star-planet interactions on YZ Ceti, and what we can learn from them about exoplanetary magnetic fields. Check out the article below featuring some amazing illustrations that I will be stealing for future talks!

Good day at the blackboard with @astrojoe.bsky.social & @robkavanagh.bsky.social, in person collaboration rocks