Cosmic Ray Anisotropy Workshop 2023

US/Central
Chicago, Illinois (Loyola University - Chicago)

Chicago, Illinois

Loyola University - Chicago

Cuneo Hall - Room 002 6430 N. Kenmore Ave. Chicago, IL 60626
Description

Science Goals

The Workshop will bring together scientists from around the world to discuss the origin, composition, propagation, and modulation of cosmic rays, focusing on the anisotropy on small and large scales and the effects of interstellar and heliospheric processes on the signal observed at the Earth.

 

Topics of the Workshop

  • Cosmic ray anisotropy and local sources of acceleration
  • Cosmic ray propagation through interstellar magnetized plasma
  • Cosmic ray interaction with the heliosphere
  • Properties of galactic and interstellar medium and magnetic fields
  • Properties of the heliosphere and astrospheres
  • Recent results on cosmic ray anisotropy observations
  • Analysis techniques in cosmic ray anisotropy studies
  • Gamma rays as probes of cosmic ray acceleration and transport
  • Anomalies in cosmic ray spectrum and composition

 

Local Organizing Committee

  • Rasha Abbasi (Loyola University - Chicago)
  • Paolo Desiati (University of Wisconsin - Madison)
  • Juan Carlos Díaz Vélez (University of Wisconsin - Madison)
  • Frank McNally (Mercer University)
  • Hannah Haynes (University of Wisconsin - Madison)

 

International Scientific Organizing Committee

  • Carmelo Evoli (GSSI, L'Aquila, Italy)
  • Alex Lazarian (University of Wisconsin - Madison)
  • Philipp Mertsch (RWTH Aachen University, Germany)
  • Nikolai Pogorelov (University of Alabama - Huntsville)

 

Registration Payment

To pay the registration fee go to https://store.icecube.wisc.edu/cosmicray

Important Dates

  • February 1st, 2023: open early registration (fee $200)
  • April 16, 2023 (DATE POSTPONED): close early registration (fee $240)
  • May 16-19, 2023: workshop
Registration
CRA 2023 Registration
Participants
  • Agnieszka Leszczynska
  • Benedikt Schroer
  • Carmelo Evoli
  • Damiano Caprioli
  • Efrem Maconi
  • Ellen Zweibel
  • Emily Lichko
  • Emily Simon
  • Eric Zirnstein
  • Eun-Suk Seo
  • Federico Urban
  • Foteini Oikonomou
  • Francis Halzen
  • Frank McNally
  • Gianfranco Brunetti
  • Giuseppe Di Sciascio
  • Gwenael Giacinti
  • Igor Moskalenko
  • Jamie Rankin
  • Jeffrey Linsky
  • Jihyun Kim
  • Juan Carlos Díaz Vélez
  • Michael Unger
  • Miguel Mostafa
  • Ming Zhang
  • Nikolai Pogorelov
  • Noufel Maalal
  • Paolo Desiati
  • Pasquale Blasi
  • Perri Zilberman
  • Philipp Mertsch
  • Priscilla Frisch
  • Rasha Abbasi
  • Rebecca Diesing
  • Roberta Sparvoli
  • Shiqi Yu
  • Siddhartha Gupta
  • Siyao Xu
  • Takashi Sako
  • Tareq AbuZayyad
  • Teresa Bister
  • Wei Gao
  • Wenjie Hou
    • 08:00 08:30
      Registration 30m
    • 08:30 08:45
      Welcome 15m
      Speaker: Rasha Abbasi (Loyola University Chicago)
    • 08:45 09:30
      Recent Results in Cosmic-Ray Astrophysics 45m
      Speaker: Carmelo Evoli (Gran Sasso Science Institute)
    • 09:30 10:05
      Turbulence and CR propagation (remote) 35m
      Speaker: Gwenael Giacinti
    • 10:05 10:40
      Recent Progress in Direct Measurements of Cosmic Rays (remote) 35m
      Speaker: Eun-Suk Seo (University of Maryland)
    • 10:40 11:10
      Coffee break 30m
    • 11:10 11:45
      Observation of cosmic-ray anisotropy with LHAASO (remote) 35m
      Speaker: Wei Gao
    • 11:45 12:20
      Indirect Measurements of galactic Cosmic Rays 35m
      Speaker: Giuseppe Di Sciascio
    • 12:20 14:00
      Lunch break 1h 40m
    • 14:00 14:35
      Living in the Bubble: structure, formation, and how it affects us 35m
      Speaker: Efrem Maconi
    • 14:35 15:10
      CR anisotropy with IceCube 35m
      Speakers: Frank McNally (Mercer University) , Rasha Abbasi (Loyola University Chicago)
    • 15:10 15:45
      Transport of Galactic Cosmic-Ray Nuclei 35m
      Speaker: Benedikt Schroer
    • 15:45 16:15
      Coffee break 30m
    • 16:15 17:00
      Cosmic rays in a turbulent interstellar medium: Recent progress and open questions 45m
      Speaker: Philipp Mertsch
    • 17:00 18:00
      Discussion
    • 19:00 20:00
      Welcome reception: Welcome Reception
    • 08:00 08:45
      Registration 45m
    • 08:45 09:30
      Selected Aspects of Magnetized Turbulence (with implications for CRs) 45m
      Speaker: Alex Lazarian
    • 09:30 10:00
      Second order Fermi Acceleration in Galaxy Clusters 30m
      Speaker: Gianfranco Brunetti
    • 10:00 10:30
      CR Acceleration in Turbulent Magnetic Reconnection (remote) 30m
      Speaker: Elisabete de Gouveia Dal Pino (IAG - Universidade de São Paulo)
    • 10:30 11:00
      Coffee break 30m
    • 11:00 11:30
      Cosmic ray diffusion in anisotropic MHD turbulence 30m
      Speaker: Siyao Xu
    • 11:30 12:00
      Results from the High Altitude Water Cherenkov Observatory 30m
      Speaker: Miguel Mostafa
    • 12:00 12:30
      Constraining the sources of ultra-high-energy cosmic rays with the Pierre Auger Observatory 30m
      Speaker: Teresa Bister
    • 12:30 14:00
      Lunch break 1h 30m
    • 14:00 14:30
      Results from TA 30m
      Speaker: Tareq Abu-Zayyad
    • 14:30 15:00
      Cosmic Ray Anisotropy with the Telescope Array 30m
      Speaker: Jihyun Kim
    • 15:00 15:30
      New Models of the Magnetic Field of the Galaxy 30m
      Speaker: Michael Unger
    • 15:30 16:00
      Coffee break 30m
    • 16:00 16:45
      UHECR anisotropies 45m
      Speaker: Glennys Farrar
    • 16:45 18:00
      Discussion
    • 08:00 08:45
      Registration 45m
    • 08:45 09:30
      Heliosphere in the Local Interstellar Medium 45m
      Speaker: Nick Pogorelov
    • 09:30 10:00
      The IBEX Ribbon and its Relation to the Solar-Interstellar Interaction (remote) 30m
      Speaker: Eric Zirnstein
    • 10:00 10:30
      Cosmic ray pitch angle anisotropies in the Very Local Interstellar Medium 30m
      Speaker: Jaime Rankin
    • 10:30 11:00
      Coffee break 30m
    • 11:00 11:45
      Review of the Local ISM 45m
      Speaker: Jeff Linsky
    • 11:45 12:15
      Turbulence in the local ISM 30m
      Speaker: Federico Fraternale
    • 12:15 12:45
      The curious maximum-rigidity distribution of ultra-high-energy-cosmic-ray accelerators 30m

      A standard assumption among models of candidate source populations of ultra-high energy cosmic rays (UHECRs) is that all sources in a candidate source population accelerate particles to the same maximum energy. Motivated by the fact that candidate astrophysical accelerators exhibit a vast diversity in terms of their relevant properties, such as luminosity, Lorentz factor, and magnetic field strength, we study the compatibility of a population of sources with non-identical maximum cosmic-ray energies with the observed energy spectrum and composition of UHECRs at Earth. For this purpose, we compute the UHECR spectrum emerging from a population of sources with a power-law, or broken-power-law, distribution of maximum energies applicable to a broad range of astrophysical scenarios. We find that for a wide range of studied models, the maximum energies of the UHECR accelerators must be nearly identical in order to be compatible with the UHECR data, in stark contrast to the variance expected for the astrophysical source models considered. A substantial variance of the maximum energy is only consistent with the UHECR data if the maximum energies of the UHECR sources follow a broken power-law distribution with a very steep spectrum above the break. However, in this scenario, the individual source energy spectra must be unusually hard with increasing energy output as a function of energy. These findings have implications for the arrival-direction distribution of UHECRs.

      Speaker: Foteini Oikonomou (Norwegian University of Science and Technology)
    • 12:45 14:15
      Lunch break 1h 30m
    • 14:15 14:45
      Configuration of Interstellar Magnetic Field Surrounding the Heliosphere (remote) 30m
      Speaker: Priscilla Frisch
    • 14:45 15:15
      Heliosphere and TeV CR anisotropy 30m
      Speaker: Ming Zhang (Florida Institute of Technology)
    • 15:15 15:45
      Modeling of cosmic-ray anisotropy at TeV energies in an MHD model heliosphere 30m
      Speaker: Takashi Sako
    • 15:45 16:15
      Coffee break 30m
    • 16:15 17:00
      The Relationship between the Local ISM Distribution and Milky Way Spiral Structure 45m
      Speaker: Robert Benjamin
    • 17:00 18:00
      Discussion
    • 19:00 22:00
      Conference banquet
    • 08:45 09:30
      IceCube: The first Decade of Neutrino Astronomy 45m
      Speaker: Francis Halzen (University of Wisconsin–Madison)
    • 09:30 10:00
      Cross-correlation studies with UHECRs (remote) 30m
      Speaker: Federico Urban
    • 10:00 10:30
      Coffee break 30m
    • 10:30 11:00
      Local Sources of Cosmic Rays 30m
      Speaker: Igor Moskalenko
    • 11:00 11:45
      Wrapping up and Collecting thoughts on Cosmic Ray Astrophysics 45m
      Speaker: Pasquale Blasi
    • 11:45 12:45
      Discussion