Upcoming British Astronomical Society Radio Astronomy Group RAGZoom meetings Nov 2025-Jan 2026
Friday November 7th 19:30 (19:30 UTC)
Dr Katharine Mulrey Associate professor – Astrophysics (Radboud University, the Netherlands)
The detection of ultra-high-energy cosmic rays and neutrinos through their radio signals
Cosmic rays have been observed for over a century, and yet the sources of the highest energy particles still remain a mystery. We can detect these cosmic rays, and the associated high energy neutrinos, through the particle cascades they initiate when they interact in the atmosphere or the earth. In this talk, I will present an overview of modern efforts to measure these cascades using the radio signals they generate, in particular, using radio telescopes like LOFAR and the SKA.
Friday December 5th 19:30 (19:30 UTC)
Diane Swan
Exploring the radio emission of Core Collapse Supernova SN2017eaw, and glimpse at the eMERLIN array.
On the 15th of May 2017, a new supernova in the galaxy NGC6946, (the Fireworks Galaxy), was reported from visual observation by Peter Wiggins, and at a distance of approximately 5.5Mpc, this is in our cosmic back yard. Consequently, this supernova has been well observed at frequencies across the EM spectrum, but unusually we have detailed radio observation in the ranges, L, C, X U and K. Interpretation of the radio data, provides a range of information about the progenitor, its behaviour in the final years prior to the explosion, and the physical processes linked to the radio emission.
Dian will explore: The nature of Core Collapse Supernovae, Progenitor behaviour and its influence on radio emission, Why is it unusual to have radio observation at all!
Friday 23rd Jan. 2026 19:30 GMT (19:30 UTC)
An evening at Dwingeloo – Live observations.
Tammo Jan Dijkema and Thomas Telkamp
With the historic Dwingeloo 25m radio telescope, we can observe many interesting sources: pulsars, OH masers, continuum sources, galactic and extragalactic neutral hydrogen to name a few. We will present from the cabin of the Dwingeloo telescope.