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

Registration

Welcome to CA21106 General Meeting

WG3 (Astrophysics)

1 Status, challenges and promises of MeV gamma-ray astrophysics

Speaker: Francesca Calore

2 Cosmic Gravitational Waves and PBH: a Gateway to Early Universe

Speaker: Ninetta Saviano (Istituto Nazionale di Fisica Nucleare)

10:55 Coffee break

WG3 (Astrophysics)

3 WISP production in compact objects

Speaker: Damiano Fiorillo

4 The Equation of State of Dense Matter for Neutron Stars and Related Astrophysical Phenomena

Speaker: Ignazio Bombaci

5 Radio signals from axion stars

Speaker: Guenter Sigl (Universität Hamburg)

Round Table

6 Report on WG3 Activities

7 Discussion

WG3 (Astrophysics)

8 A new method to constrain axion-electron coupling with globular cluster

Speaker: Thomas Levasseaur

9 Detecting light axions from supernovae in nearby galaxies

Speaker: Francesca Lecce

10 Stochastic galactic supernova flux of MeV particles: direct detection

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

WG4 (Experimental Searches)

11 Streaming dark matter signatures from space and locally

Speaker: Konstantin Zioutas

12 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)

13 Cross-sensing in ultralight DM searches

Speaker: Sreemanti Chakraborti (IPPP, Durham University)

16:40 Coffee Break

WG3 (Astrophysics)

14 Light bosons from cold isolated NSs

Speaker: Alessandro Lella

15 GALactic AXion Instrument for Supernova (GALAXIS)

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

16 Probing axion-electron and axion-nucleon couplings with NuSTAR solar observations

Speaker: Tiziano Zanzarella

Tuesday 23 June

WG2 (Cosmology)

17 Axions and warm inflation

Speaker: Kim Berghaus

18 Looking for gravitational waves with orbital dynamics

Speaker: Diego Blas Temiño

10:50 Coffee break

WG2 (Cosmology)

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

Speaker: Claudio Bonanno

20 Fundamental physics with intergalactic matter

Speaker: Matteo Viel

Round Table

21 Report on WG2 Activities

22 Discussion

WG1 (Theory)

23 Gravitational Constraints on Fibre Inflation

Speaker: Alexander Westphal

24 Phenomenology of Closed String Hidden Photons

Speaker: Luca Caraffi

25 The structure of multiple axion solutions and their emergence from flavour deconstruction

Speaker: Marta Fuentes Zamoro (Universidad Autónoma de Madrid)

WG2-3 (Astro-Cosmo)

26 The RES-NOVA capability to search for axion particles

Speaker: Nahuel Ferreiro lachellini

COST_istanbul_Tomas_OShea.pdf

COST_istanbul_Tomas_OShea.pptx

27 Axion-Like Electrophilic Portal for Pion Dark Matter

Speaker: Jiheng Guo (Istituto Nazionale di Fisica Nucleare)

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

Speaker: Vishal Parmar (Istituto Nazionale di Fisica Nucleare)

16:10 Coffee break

WG1 (Theory)

29 Spectator axions in multifield inflation

Speaker: Francisco Pedro

30 Axiverse Lampposts

Speaker: David Cyncynates

31 Cosmic birefringence from a stiff axion-like field

Speaker: Andrea Minotti

WG2-3 (Astro-Cosmo)

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

Speaker: Orion Ning (University of California, Berkeley)

33 Decoherence and effective dynamics in Axion Domain Wall Networks

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

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

Speaker: Luca Caloni (University of Ferrara)

Wednesday 24 June

WG1 (Theory)

35 Horizons in string compactifications

Speaker: Flavio Tonioni

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

Speaker: Xavier Ponce Diaz (University of Basel)

10:50 Coffee break

WG1 (Theory)

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

Speaker: Pablo Quíle​​z

38 Superstring Phases in the Early Universe and Gravitational Waves

Speaker: Noelia Sánchez González

Round Table

39 Report on WG1 Activities

40 Discussion

15:10 Coffee break

Round Table

41 Report on WG4 Activities

42 Discussion

Open discussion on the Action

Thursday 25 June

WG4 (Experimental Searches)

43 High frequency GW, ALPS and WISP searches

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

44 DELight Experiment

Speaker: Belina Von Krosigk

11:25 Coffee break

WG4 (Experimental Searches)

45 Avalanche Terahertz Photon Detection in a Rydberg Tweezer Array

Speaker: Chris Nill

46 QUAX Experiment

Speaker: Giuseppe Ruoso (Istituto Nazionale di Fisica Nucleare)

Conclusions

47 Conclusions

Speaker: Alessandro Mirizzi (Istituto Nazionale di Fisica Nucleare)

Management Committee Meeting

48 CA21106 Introduction

Speaker: Alessandro Mirizzi (Istituto Nazionale di Fisica Nucleare)

49 WG 1 report

50 WG2 report

51 WG3 report

52 WG 4 report

53 WG5 report

16:45 Coffee break

Management Committee Meeting

54 Grant Awarding Coordinator report

Speaker: Venelin Kozhuharov

55 ECI Committee Report

56 Report from Gender and Diversity Advisor

Speaker: Prof. Deniz Sunar Cerci