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Astroparticle Symposium 2025

3–21 nov. 2025
Institut Pascal
Fuseau horaire Europe/Paris

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Liste des Contributions

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  1. 5. Search for dark matter with SNSPDs: the QROCODILE experiment
    Chiara Capelli (University of Zurich)
    03/11/2025 11:30

    The QROCODILE (Quantum Resolution-Optimized Cryogenic Observatory for Dark matter Incident at Low Energy) experiment uses superconducting nanowire single-photon detectors (SNSPDs) to search for scattering and absorption of dark matter (DM) candidates with masses as low as 30 keV. We conducted a first measurement at the University of Zurich with a WSi SNSPD placed on a Si/SiO2 substrate, and we...

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  2. 6. QUEST-DMC: QUantum Enhanced Superfluid Technologies for Dark Matter and Cosmology
    Robert Smith
    03/11/2025 12:00

    The QUEST-DMC experiment uses a superfluid helium-3 target, cooled to less than 200 microkelvin, to search for interactions with sub-GeV mass dark matter candidates with recoil energies in the keV scale and below. Nanoelectromechanical resonators (NEMS) are submerged in the superfluid target and read out using low-noise quantum sensors to achieve the low energy thresholds required to probe...

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  3. 53. The Modane Underground Laboratory
    Silvia Scorza
    03/11/2025 14:30

    The Modane Underground Laboratory is the deepest tunnel-access underground laboratory in Europe. The experimental site is protected by a 4800 m.w.e. overburden that reduce the muon flux to 5 muons/m2/day, and is thus ideal for a wide range of applications requiring ultra-low radioactivity levels. I will present the evolution of this facility and of its science program in the domain of dark...

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  4. 7. One Electron at a Time: Skipper-CCD and beyond
    Javier Tiffenberg
    04/11/2025 09:30

    Over the past decade, Skipper Charge-Coupled Devices (Skipper-CCDs) have transformed the landscape of rare-event detection by enabling ionization measurements with sub-electron resolution and unprecedented low dark-counts. This capability has opened new windows into the search for low-mass dark matter, coherent neutrino scattering, exotic neutrino interactions, and milli-charged particles. In...

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  5. 8. Search for millicharged particles with Skipper-CCDs at particle accelerators.
    Santiago Perez
    04/11/2025 10:00

    Millicharged particles (mCPs) appear in many extensions of the standard model. They are characterized by having a fractional electric charge and can be a compelling DM candidate or part of a dark sector that could solve anomalies in both particle physics and cosmology. If mCPs exist, they could be created through meson decays in accelerator facilities. Taking advantage of the low ionization...

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  6. 9. The DAMIC-M experiment: light dark matter in a kg-scale Skipper CCD detector
    Nicolás AVALOS (LPNHE - IN2P3 - CNRS)
    04/11/2025 10:30

    DAMIC-M (DArk Matter in CCDs at Modane) is an ongoing dark matter (DM) direct detection experiment located at the Modane Underground Laboratory (LSM). The very low energy threshold of Skipper CCDs allows us to test unexplored regions of the DM parameter space, in particular MeV-scale particles which interact with electrons via a U(1) mediator. Using a prototype detector and an exposure of ~1.2...

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  7. 59. Appel à Programme Institut Pascal
    04/11/2025 11:00
  8. 10. Overview of the future TESSERACT experiment at LSM
    Julien BILLARD (CNRS - IP2I)
    04/11/2025 11:45

    TESSERACT (Transition Edge Sensor with Sub-Ev Resolution and Cryogenic Targets) is a future Light Dark Matter experiment to be installed in the Laboratoire Souterrain de Modane. Several cryogenic targets will be used in order to be sensitive to different DM interactions, allowing to explore both Electronic Recoils Dark Matter (ERDM) and Nuclear Recoils Dark Matter (NRDM) in the sub-GeV range,...

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  9. 11. The SuperCDMS Experiment at SNOLAB
    Matthew Stukel (SNOLAB)
    04/11/2025 12:15

    Located 2km underground at SNOLAB, the SuperCDMS (Cryogenic
    Dark Matter Search) experiment will focus on the detection of low-mass
    (<10 GeV/c2) dark matter particles. The experiment utilizes 6 silicon and
    18 germanium cryogenic calorimeters arranged in 4 detector towers.
    There are two types of individual detectors; HV and iZIP. The HV detectors
    are instrumented with phonon sensors, and...

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  10. 57. Search for light dark matter with CRESST-III
    Paolo Gorla
    04/11/2025 12:45

    The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) experiment, located in Laboratori Nazionali del Gran Sasso - INFN in Italy, aims to directly detect light dark matter (DM) particles. Scintillating CaWO_4 crystals, equipped with Transition Edge Sensor (TES), are operated as cryogenic detectors at mK temperatures, as target material for DM-nucleus scattering. CRESST...

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  11. 12. Xenon detectors for light dark matter searches
    Jelle Aalbers
    05/11/2025 09:30

    Liquid xenon detectors currently provide the most sensitive constraints on a broad range of dark matter candidates. Thanks to progress in detector technology and analysis methods, including ionization-only searches and the Migdal effect, xenon detectors are also effective at constraining several light dark matter models. This talk will overview the status, future prospects and limitations of...

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  12. 13. The future of the liquid argon technology in astroparticle physics
    Davide Franco
    05/11/2025 10:00

    Liquid argon (LAr) technology has emerged as one of the most widely used detection media in astroparticle physics, offering exceptional scalability and outstanding scintillation and ionization yields. Its versatility enables a broad scientific program ranging from neutrino physics and dark matter searches to future applications in MeV gamma astronomy. The intrinsic purity, self-shielding...

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  13. 14. Searching for Light Dark Matter with the NEWS-G Experiment
    Marie-Cecile Piro
    05/11/2025 10:30

    The New Experiments With Sphere-Gas (NEWS-G) uses spherical proportional counters filled with light noble gas to directly detect light dark matter particles. The detector consists of a large sphere of 135 cm diameter, equipped with a high-voltage multi-anode sensor, “ACHINOS”, developed to ensure a sufficiently strong electric field at large radii while maintaining the capacity to achieve high...

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  14. 15. PandaX: Large Scale Underground Liquid Xenon Observatory for Dark Matter and Neutrinos
    Shaobo Wang
    05/11/2025 11:30

    Large scale liquid xenon (LXe) detectors located deep underground have unique
    advantages in searching for rare physics signals, including dark matter (DM) and
    neutrinos. PandaX-4T is one of the big three LXe experiments for DM searches. We are
    running the PandaX-4T detector with 4-ton xenon in the sensitive volume, the
    commissioning run0 data and physical run 1 data have push the...

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  15. 16. Dark matter searches with helium targets in TESSERACT
    Knut Moraa
    05/11/2025 12:00

    Searches for dark matter below 1 GeV using solid detectors face challenging backgrounds associated with minuscule strains and stresses in the detector target and mounting. Alongside low mass and high radiopurity this makes superfluid 4He a unique target material. The TESSERACT multi-target dark matter search has demonstrated a superfluid He detector prototype which is sensitive to both...

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  16. 17. Axion dark matter searches with the DAWA experiment
    Laurent Chevalier
    06/11/2025 09:30

    The DAWA (Dark Matter Axion Wideband Approach) experiment aims to detect
    axion-photon conversions in the 10–40 GHz frequency range, with sensitivity
    to axion-photon couplings on the order of 10⁻¹¹ [GeV⁻¹].
    The experimental setup consists of a spherical metallic surface magnetized
    by permanent magnets, generating an average magnetic field of
    approximately 0.8 T, over an area of about 1...

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  17. 18. The IAXO and BabyIAXO Experiments: Status, Detector Developments, and Future Prospects
    Esther Ferrer Ribas (IRFU - Université Paris-Saclay)
    06/11/2025 10:00

    The International Axion Observatory (IAXO) and its prototype, BabyIAXO, are next-generation helioscopes designed to search for axions and axion-like particles (ALPs) with unprecedented sensitivity. A key element of the project is the detector development program, which aims to achieve ultra-low background levels and high X-ray detection efficiency. BabyIAXO serves as a technological pathfinder...

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  18. 19. Recent Results and Current Efforts from BREAD
    Gabe Hoshino
    06/11/2025 10:30

    BREAD is a reflector-based axion detection concept which seeks to perform broadband searches for axions and axion-like particles at frequencies which are not accessible to resonant cavity experiments due to scaling limitations at small wavelengths. We present recent results from GigaBREAD, a gigahertz pilot experiment which probed axion-like particles and dark photons in the $\sim 50 ...

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  19. 20. Searching for Dark Matter with MADMAX
    David Leppla-Weber
    06/11/2025 11:30

    The nature of dark matter is one of the biggest open questions in physics today.
    One possible answer is the axion, which was originally predicted as a solution
    to the strong CP problem but also makes for an excellent cold dark matter can-
    didate. The MAgnetized Disk and Mirror Axion eXperiment (MADMAX) aims
    at detecting axions from the galactic dark matter halo in the theoretically...

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  20. 21. Status report on the ADMX and QSHS instruments
    Ed Daw
    06/11/2025 12:00

    The Axion Dark Matter eXperiment, sited at The University of Washington, Seattle, utilises a Sikivie type electromagnetic resonator to search for QCD axion dark matter. Joined in the last couple of years by the CAPP collaboration, ADMX continues to search for local halo axions at levels commensurate with the DFSZ model in a mass range 2.9 to 5.4 micro electron volts. QSHS is a new...

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  21. 1. Axions and Other Wave-Like Dark Matter Candidates
    Andreas Ringwald
    07/11/2025 09:30

    The nature of dark matter remains one of the central puzzles in physics. Beyond traditional WIMPs, weakly interacting slim particles (WISPs) — such as axions, axion-like particles, dilatons, dark photons, and dark gravitons — emerge naturally in theories beyond the Standard Model, including string theory and modified gravity. Their ultra-light masses make them compelling wave-like dark matter...

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  22. 2. Observables alternative to WIMP and FIMP candidates, recent developments
    Prof. Yann Mambrini (CNRS, IJCLab, Université Paris-Saclay)
    07/11/2025 10:00
  23. 56. X-ray tests of sub-GeV DM
    Marco Cirelli
    07/11/2025 10:30

    Light DM, intended as having a mass between 1 MeV and about 1 GeV, is an intriguing possibe alternative to the more traditional WIMP Dark Matter. It is interesting both theoretically and phenomenologically. Testing it via Indirect Detection is more challenging than WIMPs, but X-ray measurements provide a very powerful handle. They currently impose stringent constraints, and allow in...

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  24. 3. Round Table: Experimentalists and Theorists
    07/11/2025 11:30
  25. 82. High frequency gravitational waves - challenges and opportunities
    Sebastian A. R. Ellis, Valerie Domcke
    10/11/2025 15:00
  26. 67. Is inflation on the Run?
    Lucien Heurtier
    12/11/2025 08:30
  27. 66. Talk: Phenomenology of Inflaton Fragmentation
    Marcos Garcia
    12/11/2025 08:50
  28. 69. (P)reheating fermions in a quartic inflaton potential
    Nabeen Bhusal
    12/11/2025 09:10
  29. 68. Asymmetric Reheating: Thermalization and relics of a Hidden sector
    Simon Cléry
    12/11/2025 09:30
  30. 70. PBH hotspot and dark matter production
    Mathieu Gross
    12/11/2025 10:20
  31. 71. Taming the dark photon production via non-minimal coupling to gravity
    Jong-Hyun Yoon
    12/11/2025 10:40
  32. 72. Primordial Black Holes in a Thermal Bath:Cosmological Implications
    Riajul Haque
    12/11/2025 11:00
  33. 73. Radiative corrections in Starobinsky inflation
    Wenqi Ke
    12/11/2025 11:20
  34. 74. Inflationary particle production
    Oleg Lebedev
    12/11/2025 13:30
  35. 75. Ultra-relativistic freeze-out during the reheating epoch: cold dark matter from a hot birth
    Stephen Henrich
    12/11/2025 13:50
  36. 76. Quantum Sensors in the Search for Ultralight Axion-like Dark Matter
    Sreemanti Chakraborti
    12/11/2025 14:10
  37. 77. Higgs pole inflation and its realizations
    Hyun Min Lee
    12/11/2025 15:00
  38. 78. Infrared fluctuations from inflation: Dark Matter and its GW Signatures
    Debaprasad Maity
    12/11/2025 15:20
  39. 79. Dark matter spikes as a laboratory for particle physics
    Alejandro Ibarra
    12/11/2025 15:40
  40. 80. Inflaton Quanta: A Window into Reheating?
    Kunio Kaneta
    12/11/2025 16:30
  41. 81. Self-Gravity in Superradiance Clouds: Implications for Binary Dynamics and Observational Prospects
    Hyungjin Kim
    12/11/2025 16:50
  42. 84. New Perspectives on the QCD axion
    Tony Gherghetta
    13/11/2025 10:00
  43. 83. Status and perspectives of Direct Dark Matter searches
    Luca Scotto
    13/11/2025 14:30
  44. 23. Welcome and registration
    17/11/2025 11:00
  45. 24. Artist in residence
    Panni Margot
    17/11/2025 13:30
  46. 25. A gamma-ray view on AGN variability
    Reshmi Mukherjee (Barnard College, Columbia University)
    17/11/2025 14:00
  47. 26. Nancy Grace Roman mission
    Julie McEnery
    17/11/2025 15:00
  48. 27. AGN multimessenger modelling
    MATTEO CERRUTI (Université de Paris / APC)
    17/11/2025 16:30
  49. 28. Time series analysis: Super Resolution with a new Periodogram
    Jeff Scargle
    17/11/2025 17:00

    How would you like an algorithm that

    Takes in time series you suspect, or know, contain periodic signals
    Handles any data mode — time-tagged photons, fluxes, etc.
    Returns estimates , for any sinusoidal signals present, of their
    Amplitude
    Phase
    Frequency
    Separates sinusoid pairs even closer in frequency than the Rayleigh criterion (Super Resolution)

    These properties of a new...

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  50. 29. SVOM observations of AGN and MicroQSOs
    Floriane Cangemi
    17/11/2025 17:30
  51. 30. H.E.S.S.
    Werner Hofmann
    18/11/2025 09:00
  52. 31. Particle diffusion and acceleration modeling with stochastic differential equations
    Sophie Aerdker
    18/11/2025 10:00
  53. 32. An X-ray view on AGN variability
    Greg Madejski
    18/11/2025 11:00
  54. 33. LHAASO and the IGMF
    Andrii Neronov
    18/11/2025 12:00
  55. 34. Climate crisis and role of astrophysics
    Jürgen Knödlseder (IRAP)
    18/11/2025 14:00
  56. 36. Past activity of the GC
    Régis TERRIER (APC (CNRS/Université Paris Cité))
    18/11/2025 15:00
  57. 38. Acceleration processes
    Martin LEMOINE (Institut d'Astrophysique de Paris)
    19/11/2025 09:00
  58. 37. SWGO
    Marianne LEMOINE-GOUMARD (CENBG, Univ. Bordeaux, CNRS-IN2P3)
    19/11/2025 10:00
  59. 39. Theory of Binaries
    Guillaume DUBUS (IPAG)
    19/11/2025 11:00
  60. 40. NectarCAM
    François Brun (CEA Saclay (IRFU/DPHP))
    19/11/2025 12:00
  61. 60. GRBs, GWs and SVOM
    Frédéric DAIGNE (Institut d'Astrophysique de Paris - Sorbonne University)
    19/11/2025 15:00
  62. 41. The (variable?) neutrino sky
    Anna Franckowiak
    19/11/2025 16:30
  63. 42. Pulsars and the PTA with Fermi-LAT
    David Smith
    19/11/2025 17:30
  64. 43. Radio astronomy of AGN jets
    Helene Sol
    19/11/2025 18:00
  65. 44. A gamma-ray view of Pulsars
    Pablo Saz Parkinson
    20/11/2025 09:00
  66. 45. The neutrino connection
    Foteini Oikonomou (Norwegian University of Science and Technology (NTNU))
    20/11/2025 10:00
  67. 46. Black Holes and EHT
    Sera Markoff
    20/11/2025 11:00
  68. 47. Variability and stellar mass black holes
    Phil Uttley
    20/11/2025 12:00
  69. 35. LCR, AGN, periodicity searches with Fermi-LAT
    Janneth Valverde
    20/11/2025 15:30
  70. 48. GRBs + GWs at VHE energies
    Fabian Schüssler (IRFU / CEA Paris-Saclay)
    20/11/2025 16:00
  71. 49. Primordial Black Holes
    Jean-François Glicenstein (IRFU, CEA Saclay)
    20/11/2025 16:30
  72. 50. AGN variability with CTAO
    David Sanchez (LAPP/IN2P3/CNRS)
    21/11/2025 10:00
  73. 51. The transient universe with Rubin
    Julien Peloton (CNRS-IJCLab)
    21/11/2025 11:00
  74. 52. Wrap-up
    Deirdre HORAN (LLR / Ecole Polytechnique / CNRS / IN2P3), Jonathan Biteau (Université Paris-Saclay, CNRS/IN2P3, IJCLab), Stephen FEGAN (LLR/Ecole Polytechnique)
    21/11/2025 11:30
  75. 54. ALTO (TBC)
  76. 58. Appel à Programme Institut Pascal
  77. 64. lucien
  78. 22. Lunch at cathedral
  79. 55. Neutron calibration (A. Kavner)
  80. 65. Talk: Is inflation on the Run?
    Lucien Heurtier
  81. 4. TBD