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Cosmic Rays and Neutrinos in the Multi-Messenger Era

9–13 déc. 2024
Paris
Fuseau horaire Europe/Paris

Liste des Contributions

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  1. 1. Registration
    09/12/2024 08:30
  2. 2. Welcome
    Dmitri SEMIKOZ (APC, Paris)
    09/12/2024 09:00
  3. 3. Telescope Array results
    Yoshiki Tsunesada
    09/12/2024 09:10
  4. 4. Auger results
    Ralph Engel
    09/12/2024 09:40
  5. 6. QGSJet 3.1
    Sergey Ostapchenko
    09/12/2024 10:30
  6. 5. New developments in EPOS : toward a global approach from Heavy Ions to Cosmic Rays
    Tanguy Pierog
    09/12/2024 11:00
  7. 7. Discussion UHECR
    09/12/2024 11:30
  8. 8. The Galactic magnetic fields: Progress in last 30 years
    JinLin Han
    09/12/2024 13:30
    GMF
  9. 9. The Galactic Magnetic Field and UHECR Deflections
    Michael Unger
    09/12/2024 14:00
    GMF
  10. 10. The coherent magnetic field of the Milky Way: new ideas and UHECR deflections
    Alexander Korochkin
    09/12/2024 14:30
    GMF
  11. 11. Does the Local Bubble bias Galactic magnetic field models used to backtrack UHECRs?
    Vincent Pelgrims
    09/12/2024 15:00
    GMF
  12. 12. Discussion GMF
    09/12/2024 16:00
  13. 62. Ultra-high-energy cosmic rays from ultra-fast outflows of active galactic nuclei
    Domenik Ehlert (Norwegian University of Science and Technology)
    09/12/2024 16:30

    We investigate ultra-fast outflows (UFOs) of active galactic nuclei (AGN) as potential sites for the production of the highest-energy cosmic rays, focusing on cosmic-ray nuclei, a previously unexplored aspect. These mildly-relativistic large-scale outflows, with velocities reaching up to half the speed of light, are ubiquitous in AGN. We numerically study the processes that affect the maximum...

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  14. 65. A search for neutron fluxes from Galactic candidate sources using data from the Pierre Auger Observatory
    Dr Danelise de Oliveira Franco (University of Hamburg)
    09/12/2024 16:40

    Since neutral particles are not deflected by magnetic fields, they are a valuable tool for studying the sources of ultra-high-energy cosmic rays (UHECRs). It is expected that sources of UHECRs will also produce neutrons through nuclear interactions and photo-pion production near the source. Free neutrons undergo beta decay, traveling a typical distance of $9.2\times(E/1\,\mathrm{EeV})$ kpc. As...

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  15. 78. Energy dependence of the knee in the cosmic-ray spectrum across the Milky Way
    Clément Prévotat (IAP)
    09/12/2024 16:50

    The all-particle spectrum of cosmic rays measured at Earth has a knee-like feature around 4 PeV. A priori, it is not clear if this is a local feature specific to the Solar neighbourhood in the Milky Way, or if it is a generic property of the Galactic cosmic-ray spectrum. We argue that combining gamma-ray and cosmic-ray data of LHAASO indicates that the knee is a local feature. In order to...

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  16. 77. LHAASO detection of Ultra-high-energy Gamma-Ray Emissions from the Giant Molecular Clouds
    Yanhong Yu (University of Science and Technology of China)
    09/12/2024 17:00

    Gain Molecular Clouds (GMCs) are massive reservoirs of gas and dust, with masses typically around 10$^{5}$ M$_⊙$. GMCs are critical regions for studying Cosmic Ray (CR) interactions and their effects on interstellar medium (ISM). We selected six GMCs, which are at high galactic latitude and in the field of view of LHAASO. These GMCs are within 1 kpc distance from the Sun. By using the data...

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  17. 63. Cherenkov Telescope Array Observatory sensitivity to heavy Galactic Cosmic Rays
    Coline Dubos (IJCLab)
    09/12/2024 17:10

    Finding the sources responsible for accelerating Galactic Cosmic-Rays (GCRs) to energies up to PeV remains a challenging research topic. Observations of high-energy gamma-rays by the Cherenkov Telescope Array Observatory (CTAO) would help us to identify these sources, called PeVatrons. These gamma-rays emerge from the interaction of CRs with surrounding matter through the π0 process and can be...

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  18. 61. Gamma-ray signatures of particle acceleration at stellar wind termination shocks up to PeV energies
    Alexandre Inventar (APC Laboratory)
    09/12/2024 17:20

    Young massive stellar clusters have recently brought attention as PeVatrons candidates, to explain the knee of the cosmic ray spectrum and how protons can be accelerated to such energy scale in galactic sources. The new detector LHAASO is the first to probe well the photon detection band >0.1 PeV, that can correspond to multi-PeV hadronic cosmic rays. Thus, it enables the use of its gamma-ray...

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  19. 82. The environment of pulsar halo progenitors
    Lioni-Moana Bourguinat (GSSI)
    09/12/2024 17:30

    Since the discovery of TeV halos around the Geminga and B0656+14 pulsars by the HAWC experiment in 2017, many theoretical efforts have been dedicated to understanding this source class. Indeed, assuming that they are probing the environment outside their parent supernova remnant (SNR), the gamma-ray emission hints at a confinement of high energy particles that challenges our current...

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  20. 59. Observing Scenarios and Multi-messenger Implications for the International Gravitational- Wave Network during O4 and O5
    R. Weizmann KIENDREBEOGO (CEA, Irfu)
    09/12/2024 17:40

    An advanced LIGO and Virgo's third observing run brought another binary neutron star merger (BNS) and the first neutron-star black hole mergers. While no confirmed kilonovae were identified in conjunction with any of these events, continued improvements of analyses surrounding GW170817 allow us to project constraints on the Hubble Constant ($H_0$), the Galactic enrichment from $r$-process...

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  21. 79. Monitoring the northern sky and follow-up analysis of the multi-messenger alerts with LHAASO-WCDA
    Shicong Hu (Institute of High Energy Physics, Chinese Academy of Sciences)
    09/12/2024 17:50

    With high duty cycle, wide field of view and high sensitivity, LHAASO-WCDA is a promising facility to monitor very-high-energy transient extra-galactic sources unbiasedly. We developed an real-time monitoring system based on LHAASO-WCDA observations which will send alerts within Half a day at most if there is any detection. In the past one year of operation, the system has detected more then...

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  22. 15. Observational and theoretical indications of primordial magnetism from the cosmic web
    Franco Vazza
    10/12/2024 09:00
  23. 16. Magnetic Fields and Cosmic Rays in the Local Universe Simulation
    Klaus Dolag
    10/12/2024 09:30
  24. 18. UCR sources search and dipole anisotropies review
    Teresa Bister
    10/12/2024 10:00
  25. 17. Smoking guns that UHECRs are produced by BNS mergers
    Glennys Farrar
    10/12/2024 11:00
  26. 19. Discussion UHECR sources
    10/12/2024 11:30
  27. 55. Cosmic ray feedback and magnetic dynamos in galaxy formation
    Christoph Pfrommer
    10/12/2024 13:30
  28. 20. Theory propagation <-> GMF
    Gwenael Giacinti
    10/12/2024 14:00
  29. 21. Particle Acceleration in Highly Magnetized Turbulent Plasmas
    Luca Comisso
    10/12/2024 14:30
  30. 22. Cosmic Ray Measurements with IceCube and their Connection to UHECRs
    Denis Soldin
    10/12/2024 15:00
  31. 23. LHAASO CRs
    Huihai He
    10/12/2024 16:00
  32. 25. Galactic diffuse gamma-rays (theory)
    Andrii Neronov
    10/12/2024 16:30
  33. 26. Discussion
    10/12/2024 17:00
  34. 27. Cherenkov telescopes news
    Jim Hinton
    11/12/2024 09:00
  35. 29. Leptonic/PSW nebula
    Dmitriy Khangulyan
    11/12/2024 09:30
  36. 30. TeV halos
    Tim Linden
    11/12/2024 10:00
  37. 31. SNR acceleration
    Jacco Vink
    11/12/2024 11:00
  38. 32. SNR Hadronic PeVatrons observations
    Ruizhi Yang
    11/12/2024 11:30
  39. 33. Hadronic PeVatrons/Super-bubbles
    Thibault Vieu
    11/12/2024 13:30
    MM
  40. 48. High-Energy Multimessenger Emission from Supermassive Black Holes
    Kohta Murase
    11/12/2024 14:00
    MM
  41. 34. Discussion
    11/12/2024 14:30
    MM
  42. 69. High-energy neutrino astrophysics with the KM3NeT telescope
    Mathieu Lamoureux (UCLouvain)
    11/12/2024 15:30

    KM3NeT is a neutrino telescope located in the depths of the Mediterranean Sea. It consists of two sites, ARCA (off the Sicilian coast of Capo Passero) dedicated to the study of astrophysical neutrinos and ORCA (off the French coast of Toulon), optimised for GeV - TeV energies.
    The two detectors are still under construction and should be completed in the next few years. However, the first...

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  43. 71. Status and prospects of the astrophysical GeV neutrino emission searches with IceCube and KM3NeT
    Karlijn Kruiswijk (UCLouvain)
    11/12/2024 15:40

    In the last decade, neutrino telescopes have probed astrophysical sources to probe cosmic ray acceleration mechanisms and shine light on properties previously unseen. The main neutrino telescopes nowadays are IceCube in the Antarctic ice and KM3NeT under construction in the Mediterranean Sea. These Cherenkov based neutrino telescopes are specially built for neutrino astronomy at TeV and higher...

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  44. 68. Search for GeV neutrino counterparts associated with high-energy IceCube neutrinos
    Christoph Raab (UCLouvain)
    11/12/2024 15:50

    IceCube has made significant progress in identifying astrophysical sources of high-energy neutrinos. However, the majority of the astrophysical flux remains unexplained, prompting further investigation. To improve our understanding of this flux and its sources, it is important to investigate the presence of a component at lower neutrino energies. To this end, we propose a study that conducts...

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  45. 74. Incorporating theoretical blazar models into neutrino stacking analyses with KM3NeT/ARCA
    Francesco Carenini
    11/12/2024 16:00

    After IceCube’s identification of the blazar TXS 0506+056 as the first cosmic neutrino source candidate, blazars have started to be considered among the most promising neutrino source classes. An improvement of the observations is expected thanks to the development of next-generation neutrino telescopes, such as KM3NeT/ARCA. KM3NeT/ARCA is a deep-sea Cherenkov neutrino telescope currently...

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  46. 75. Neutrino follow-up observations with the High Energy Stereoscopic System (HESS)
    Ankur Sharma (Laboratoire Astroparticule et Cosmologie (APC), Paris)
    11/12/2024 16:10

    Realtime alerts have become a cornerstone of multi-messenger astronomy since the past decade. Electromagnetic (EM) observatories operating in various wavelength-bands regularly follow up alerts issued by other EM facilities and more commonly by the neutrino and gravitational wave (GW) observatories across the world. While the localization of GW wave alerts in the sky is rather large at...

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  47. 76. Tracking the gas distribution in the Galactic Centre using neutrinos
    Paul Chong Wa Lai (University College London, Mullard Space Science Laboratory)
    11/12/2024 16:20

    The Central Molecular Zone at the Galactic Centre hosts the most massive and densest molecular clouds in our Galaxy. The mass of the clouds could be inferred from the infrared emission of the dust, or line emissions from tracers like CS and CO, but different methods having different assumptions sometimes yield inconsistent results. We propose that neutrinos can act as a new gas tracer to...

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  48. 81. Investigating the neutrino signatures of candidate neutrino-emitter blazars
    Massimiliano Lincetto (University of Würzburg / DESY Zeuthen)
    11/12/2024 16:30

    Active galactic nuclei are compelling candidates for astrophysical neutrino sources, as suggested by the detection of a high-energy neutrino positionally consistent with the flaring blazar TXS 0506+056 and evidence of neutrino emission from the nearby Seyfert galaxy NGC 1068. Our recent studies based on the IceCube time-integrated sky maps provided evidence of a statistically significant...

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  49. 66. Unveiling the hard X-ray emission of NGC 1068, a possible high energy neutrino source
    Antoine Foisseau (AstroParticules et Cosmologie - APC)
    11/12/2024 16:40

    One of the central questions in high-energy astrophysics is the origin of high-energy
    cosmic rays and neutrinos. The Seyfert 2 Compton-thick AGN NGC 1068 stands out as a
    promising candidate for high-energy neutrino emission, with a significance level of 4.2𝜎.
    Various models have been proposed to explain the multi-messenger emission associated
    with this source. X-ray data are crucial for...

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  50. 72. Fast Radio Burst Sources and Neutrinos in the Multi-Messenger Context
    Felix Bretaudeau
    11/12/2024 16:50

    Fast Radio Bursts (FRBs) are millisecond-long electromagnetic emissions originating from extra-galactic sources, characterized by unprecedented energies in the radio domain. Their properties are consistent with the hypothesis of turbulent, highly magnetized, and dense media surrounding their sources. These sources are strong candidates for multi-messenger emissions, partly due to the huge...

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  51. 73. Insights from modelling the brightest Fermi-LAT blazar flare
    Egor Podlesnyi (NTNU)
    11/12/2024 17:00

    The electromagnetic flare of the flat-spectrum radio quasar (FSRQ) 3C 454.3 in November 2010 was the brightest $\gamma$-ray flare ever observed by the Fermi-LAT from a blazar. We performed the data analysis of the multiwavelength (from infrared photons to $\gamma$ rays) quasi-simultaneous 1-day-averaged spectral-energy distributions (SEDs) for seven days of the flare and modelled the...

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  52. 80. J1048+7143: A Supermassive Black Hole Binary Candidate*
    Ilja Jaroschewski (CEA/IRFU/DPHP)
    11/12/2024 17:10

    Coincident quasi-periodic oscillations are observed in the gamma-ray, optical and radio light curves from the blazer J1048+7143. While in gamma rays and optical, the flares consist of two subflares each, the radio emissions show a Gaussian-like flare structure.

    Here, we show that all these flares are consistent with a supermassive binary black hole at the center of this blazar, caused by...

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  53. 37. General update neutrinos
    Francis Halzen
    12/12/2024 09:00
  54. 38. The ANTARES legacy results
    Antoine Kouchner (Laboratoire APC)
    12/12/2024 09:30
  55. 39. Baikal GVD
    Rastislav Dvornicky
    12/12/2024 10:00
  56. 41. IceCube from MeV to PeV
    Erin O'Sullivan
    12/12/2024 11:00
  57. 40. KM3NeT from MeV to PeV
    Aart Heijboer
    12/12/2024 11:30
  58. 42. Radio detection of UHE neutrinos
    Kumiko Kotera
    12/12/2024 12:00
  59. 43. Galactic neutrino searches (combined)
    Naoko Kurahashi
    12/12/2024 14:00
  60. 44. High energy astrophysical neutrinos: Open questions and future prospects
    Eli Waxman
    12/12/2024 14:30

    The main goals of high-energy neutrino astronomy are to identify the sources of high-energy cosmic rays, particularly ultra-high-energy ones, and to provide information on the acceleration process and constraints on models of high-energy astronomical objects. The detection of high-energy astronomical neutrinos demonstrates the potential for achieving these goals. I will discuss what we have...

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  61. 47. MM in transients
    Walter Winter
    12/12/2024 15:00
  62. 46. Real-time astronomy
    Marcos Santander
    12/12/2024 16:00
  63. 49. Connection gamma-neutrino-CR
    Foteini Oikonomou
    12/12/2024 16:30
  64. 50. New physics with neutrino telescopes
    Carlos Argüelles
    12/12/2024 17:00
  65. 45. Discussion
    12/12/2024 17:30
  66. 51. DAMPE: B/C, heavier nuclei, e^++e^-
    Francesca Alemanno
    13/12/2024 09:00
  67. 52. CALET, B/C, heavier nuclei, e^++e^-
    Paolo Maestro
    13/12/2024 09:30
  68. 53. AMS-02: Be9/10, escape times
    Alberto Oliva
    13/12/2024 10:00
  69. 54. Interpretation breaks 200GV, 10TV: source/diffusion
    Carmelo Evoli
    13/12/2024 11:00
  70. 56. Discussion
    13/12/2024 12:00
  71. 57. Conference summary
    Stefano Gabici
    13/12/2024 12:30
  72. 28. LHAASO gamma-ray review
    Zhen Cao
  73. 13. Poster Talks
  74. 35. Poster Talks
  75. 60. Pulsar RMs observed by FAST and the Galactic magnetic fields

    The Five-hundred-meter Aperture Spherical radio Telescope (FAST) is the most sensitive radio telescope for pulsar observations. We make polarimetric measurements for a large number of faint and distant pulsars in the Galactic halo and determined their rotation measures (RM). We also determined a few hundreds of RMs by processing the polarimetric data for newly-discovered pulsars in the project...

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  76. 14. Wine & cheese poster discussion
  77. 36. Wine & cheese poster discussion