4th General Meeting of COST Action COSMIC WISPers (CA21106)

22 Jun 2026, 08:05 → 25 Jun 2026, 21:00 Europe/Athens

Mon Repos Palace (Corfu (Greece))

Alessandro Mirizzi (Istituto Nazionale di Fisica Nucleare), George Zoupanos, Konstantinos Anagnostopoulos

Axions and other very weakly interacting slim (m<GeV) particles (WISPs) are easily accommodated in several extensions of the Standard Model of Particle Physics. Searches for WISPs are strongly motivated by our attempts to understand the nature of the dark matter and puzzling astrophysical and particle physics observations. 

 The aim of the COST Action COSMIC WISPers (CA21106) is to coordinate and support WISPs searches in a synergic way at the boundary between particle physics, astrophysics and cosmology. 

The CA21106 4th General Meeting will be held in Corfu' (Greece).  The objective of  the meeting is to review the status of the activities performed by the different Working Groups and to discuss the further directions of investigations. 

The Management Committee Meeting will take place in the afternoon of Thursday 25th June.

 

Monday 22 June

08:30 → 09:15 Registration

09:15 → 09:35 Welcome to CA21106 General Meeting

09:35 → 10:55 WG3 (Astrophysics)

09:35 Status, challenges and promises of MeV gamma-ray astrophysics

Speaker: Francesca Calore

10:15 Cosmic Gravitational Waves and PBH: a Gateway to Early Universe

Speaker: Ninetta Saviano (Istituto Nazionale di Fisica Nucleare)

10:55 → 11:15 Coffee break

11:15 → 13:15 WG3 (Astrophysics)

11:15 WISP production in compact objects

Speaker: Damiano Fiorillo

11:55 The Equation of State of Dense Matter for Neutron Stars and Related Astrophysical Phenomena

Speaker: Ignazio Bombaci

12:35 Radio signals from axion stars

Speaker: Guenter Sigl (Universität Hamburg)

14:40 → 15:40 Round Table

14:40 Report on WG3 Activities

15:10 Discussion

15:40 → 16:40 WG3 (Astrophysics)

15:40 A new method to constrain axion-electron coupling with globular cluster

Speaker: Thomas Levasseaur

16:00 Detecting light axions from supernovae in nearby galaxies

Speaker: Francesca Lecce

16:20 Stochastic galactic supernova flux of MeV particles: direct detection

Speaker: Marina Cermeño Gavilán (Institute for Theoretical Physics (IFT (UAM/CSIC)))

15:40 → 16:40 WG4 (Experimental Searches)

15:40 Streaming dark matter signatures from space and locally

Speaker: Konstantin Zioutas

16:00 On the axion signal and characteristics that could be produced in black holes and detected on Earth

Speaker: Daniel Gavilán Martín (Helmholtz Institute Mainz/JGU)

16:20 Cross-sensing in ultralight DM searches

Speaker: Sreemanti Chakraborti (IPPP, Durham University)

16:40 → 17:00 Coffee Break

17:00 → 18:20 WG3 (Astrophysics)

17:20 Light bosons from cold isolated NSs

Speaker: Alessandro Lella

17:40 GALactic AXion Instrument for Supernova (GALAXIS)

Speaker: joshua benabou (University of California, Berkeley / Lawrence Berkeley National Lab)

18:00 Probing axion-electron and axion-nucleon couplings with NuSTAR solar observations

Speaker: Tiziano Zanzarella

Tuesday 23 June

09:30 → 10:50 WG2 (Cosmology)

09:30 Axions and warm inflation

Speaker: Kim Berghaus

10:10 Looking for gravitational waves with orbital dynamics

Speaker: Diego Blas Temiño

10:50 → 11:20 Coffee break

11:20 → 12:40 WG2 (Cosmology)

11:20 Non-perturbative QCD inputs for axion phenomenology: status and perspectives

Speaker: Claudio Bonanno

12:00 Fundamental physics with intergalactic matter

Speaker: Matteo Viel

14:10 → 15:10 Round Table

14:10 Report on WG2 Activities

14:40 Discussion

15:10 → 16:10 WG1 (Theory)

15:10 Gravitational Constraints on Fibre Inflation

Speaker: Alexander Westphal

15:30 Phenomenology of Closed String Hidden Photons

Speaker: Luca Caraffi

15:50 The structure of multiple axion solutions and their emergence from flavour deconstruction

Speaker: Marta Fuentes Zamoro (Universidad Autónoma de Madrid)

15:10 → 16:10 WG2-3 (Astro-Cosmo)

15:10 The RES-NOVA capability to search for axion particles

Speaker: Nahuel Ferreiro lachellini

COST_istanbul_Tomas_OShea.pdf

COST_istanbul_Tomas_OShea.pptx

15:30 Axion-Like Electrophilic Portal for Pion Dark Matter

Speaker: Jiheng Guo (Istituto Nazionale di Fisica Nucleare)

15:50 Fermionic Dark Matter and Electron-Capture Supernovae: Pathways to Low-Mass Neutron Stars

Speaker: Vishal Parmar (Istituto Nazionale di Fisica Nucleare)

16:10 → 16:40 Coffee break

16:40 → 17:40 WG1 (Theory)

16:40 Spectator axions in multifield inflation

Speaker: Francisco Pedro

17:00 Axiverse Lampposts

Speaker: David Cyncynates

17:20 Cosmic birefringence from a stiff axion-like field

Speaker: Andrea Minotti

16:40 → 17:40 WG2-3 (Astro-Cosmo)

16:40 Crowdsourcing Gravitational Waves from Superradiance: Black Holes as Extreme Axion Laboratories

Speaker: Orion Ning (University of California, Berkeley)

17:00 Decoherence and effective dynamics in Axion Domain Wall Networks

Speaker: Mr Amedeo Maria Favitta (Università degli Studi di Palermo)

17:20 Beyond thermal approximations: precise cosmological bounds on Axion-Like Particles

Speaker: Luca Caloni (University of Ferrara)

Wednesday 24 June

09:30 → 10:50 WG1 (Theory)

09:30 Horizons in string compactifications

Speaker: Flavio Tonioni

10:10 The Majoron: Neutrino Masses, Dark Matter and the Baryon Asymmetry

Speaker: Xavier Ponce Diaz (University of Basel)

10:50 → 11:20 Coffee break

11:20 → 12:40 WG1 (Theory)

11:20 Multiple axions: Strong CP, Dark Matter and how to count them

Speaker: Pablo Quíle​​z

12:00 Superstring Phases in the Early Universe and Gravitational Waves

Speaker: Noelia Sánchez González

14:10 → 15:10 Round Table

14:10 Report on WG1 Activities

14:40 Discussion

15:10 → 15:30 Coffee break

15:30 → 16:30 Round Table

15:30 Report on WG4 Activities

16:00 Discussion

16:30 → 17:30 Open discussion on the Action

Thursday 25 June

09:45 → 11:25 WG4 (Experimental Searches)

09:45 High frequency GW, ALPS and WISP searches

Speaker: Aldo Ejlli (Max Planck Institute for Gravitational Physics (Albert Einstein Institute))

10:25 DELight Experiment

Speaker: Belina Von Krosigk

11:25 → 11:45 Coffee break

11:45 → 13:05 WG4 (Experimental Searches)

11:45 Avalanche Terahertz Photon Detection in a Rydberg Tweezer Array

Speaker: Chris Nill

12:25 QUAX Experiment

Speaker: Giuseppe Ruoso (Istituto Nazionale di Fisica Nucleare)

13:05 → 13:25 Conclusions

13:05 Conclusions

Speaker: Alessandro Mirizzi (Istituto Nazionale di Fisica Nucleare)

14:30 → 16:45 Management Committee Meeting

14:30 CA21106 Introduction

Speaker: Alessandro Mirizzi (Istituto Nazionale di Fisica Nucleare)

14:50 WG 1 report

15:10 WG2 report

15:30 WG3 report

15:50 WG 4 report

16:10 WG5 report

16:45 → 17:05 Coffee break

17:05 → 18:15 Management Committee Meeting

17:05 Grant Awarding Coordinator report

Speaker: Venelin Kozhuharov

17:20 ECI Committee Report

17:35 Report from Gender and Diversity Advisor

Speaker: Prof. Deniz Sunar Cerci