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Newsletter November 2025

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Description
This is November’s edition of the newsletter of the COST action. The aim is to keep you updated on recent and upcoming conferences and postdoc positions on subjects related to WISPs.

 

 

Cosmic Wispers preprints

Stripped-Envelope Supernovae for QCD Axion Detection

Francisco R. Candón, Damiano F. G. Fiorillo, Ángel Gil Muyor, Hans-Thomas Janka, Georg G. Raffelt, Edoardo Vitagliano

https://arxiv.org/pdf/2511.13815

QCD axions would be copiously produced in the proto-neutron star formed in a core-collapse supernova (SN). After escaping, they would convert into gamma rays in the Galactic magnetic field and, as recently shown, in that of the progenitor star itself. Here, we show that Type Ibc SNe—whose progenitors have lost their hydrogen or even helium envelopes—are the optimal targets for this search. The stripped progenitors are much more compact, and show larger magnetic fields than both red and blue supergiants, the progenitors of Type IIP/L SNe. If the next galactic SN is of Type Ibc, Fermi-LAT or a similar gamma-ray satellite might be able to discover the QCD axion down to masses as small as ma ≃10^{−4} eV (Peccei-Quinn scale fa ≃10^{11} GeV).



Low-frequency radio telescopes sensitivity to light dark matter

Ruben Zatini, Francesca Calore, Pasquale Dario Serpico

https://arxiv.org/pdf/2511.14845

Ground-based radio telescopes are routinely used to search for light dark matter (DM) candidates such as axion-like particles or dark photons. These instruments face however inherent limitations to push the searches to masses below 10−7 eV, due to the effect of the Earth’s ionosphere. The extant and planned space- or Moon-based radio telescopes motivate this study: We systematically investigate their sensitivity to resonant conversion of light DM into radio signals from three solar system targets: the Sun, the Earth, and Jupiter. The perspectives are especially encouraging for dark photon searches using the Sun as a target, and for axion-like particles conversion in Jupiter’s magnetosphere.



We encourage participants in the COST action to send us a small summary, typically smaller than the abstract, of their own articles that will appear in the arXiv (after they appear, with their arXiv numbers). The summary will be disseminated in the newsletter.

Send email to 

Alessandro Lella alessandro.lella@ba.infn.it

Damiano Fiorillo damianofg@gmail.com

with subject: preprint summary for Cosmic WISPers newsletter.




PhD/Postdoc/Junior Positions

 

  • November

    • Multiple PhD Positions in Fundamental Physics and Quantum Dynamics, Max Planck Institute, Heidelberg link

    • Postdoctoral Research Associate - Liquid Noble Dark Matter Detection, SLAC link

    • Postdoctoral positions in theoretical physics, CERN link

    • Postdoc positions in dark matter particle phenomenology, Chalmers University link

    • PhD positions in Astrophysics, Cosmology and Gravitation, Espirito Santo University, South America link

    • Postdocs in High-Energy Particle Physics and Cosmology, Peking University link

    • Postdoctoral positions in experimental particle, astroparticle and nuclear physics, IFIC, Valencia link

  • December

    • Postdoctoral Fellowship in Theoretical Particle Cosmology, UPenn, Philadelphia link

    • PhD and postdoc positions in astroparticle physics, GRAPPA, Amsterdam link

    • Postdoctoral positions in theoretical particle physics, DESY, Hamburg link

    • CCAPP Postdoctoral Fellow, Ohio State University link

    • Call of interest for postdoctoral research associate, La Sapienza, Rome link

    • Postdoctoral fellowship in astroparticle theory, Queen’s University, Kingston link

    • Postdoctoral scholar, UC Irvine link

    • Postdoc application in the MPP Theory group, Max Planck Institute, Garching link

    • Postdoctoral fellowship in particle astrophysics and multi-messenger astrophysics, Niels Bohr Institute, Copenhagen link

    • MSc and PhD Positions in Astroparticle Physics Phenomenology, University of Alberta link

    • Two Postdoctoral Fellowships in Machine Learning for Astrophysics & Cosmology, Stockholm University link

    • Post-doctoral position in particle cosmology, Warsaw University link

    • Faculty position in nuclear and astro-particle physics theory and experiment, T.-D. Lee Institute, Shanghai link

    • Ayudas para contratos Juan de la Cierva 2025 link

    • Call of interest for Postdoctoral Research Associate, University of Rome La Sapienza link

  • January

    • Postdoctoral positions in theoretical nuclear and particle astrophysics, Taiwan Institute link

    • Postdoctoral research associate, Fermilab link

    • Postdoctoral positions in theoretical particle physics, KIT Karlsruhe link

 

 

 

Conferences

  • December

    • Strings & Cosmology Meeting link

  • January

    • New Windows on Fundamental Physics: from tabletop devices to large scale detectors link

    • High Energy, Cosmology, and Astroparticle Physics Conference link

  • March

    • GGI PhD School on "Theoretical Aspects of Astroparticle Physics, Cosmology and Gravitation" link

    • 60th Rencontres de Moriond on Very High Energy Phenomena in the Universe: Moriond VHEPU 2026 link

  • April

    • 7th Edition of the international conference Progress on Old and New Themes in cosmology (PONT 2026) link

  • May

    • SCALE 2026: Strings & Cosmology – All Lengths Explored (SCALE) link

    • Planck2026 & 6th EuCAPT Symposium link

  • June

    • 16th International Workshop on the Identification of Dark Matter 2026 (IDM 2026) link

    • 32nd International Conference on Neutrino Physics and Astrophysics (Neutrino 2026) link

    • PASCOS 2026: The 31st International Symposium on Particles, Strings, and Cosmology (PASCOS2026) link

    • Invisibles 26 link

    • 4th Training School of the COST Action CA21106: Cosmic WISPers link

    • 4th General Meeting of the COST Action: Cosmic WISPers (CA21106) link

  • August

    • Invisibles 26 link