Cosmic Ray Anisotropy Workshop 2023

16 May 2023, 07:00 → 19 May 2023, 17:00 US/Central

Chicago, Illinois (Loyola University - Chicago)

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

CRA 2023 - PosterII.pdf

Tuesday, 16 May

08:00 → 08:30 Registration

08:30 → 08:45 Welcome

Speaker: Rasha Abbasi (Loyola University Chicago)

08:45 → 09:30 Recent Results in Cosmic-Ray Astrophysics

Speaker: Carmelo Evoli (Gran Sasso Science Institute)

slides

09:30 → 10:05 Turbulence and CR propagation (remote)

Speaker: Gwenael Giacinti

Giacinti_ CRA2023.pdf

10:05 → 10:40 Recent Progress in Direct Measurements of Cosmic Rays (remote)

Speaker: Eun-Suk Seo (University of Maryland)

Seo 2023 CRA.pdf

10:40 → 11:10 Coffee break

11:10 → 11:45 Observation of cosmic-ray anisotropy with LHAASO (remote)

Speaker: Wei Gao

CRA2023_LHAASO_WeiGao.pdf

11:45 → 12:20 Indirect Measurements of galactic Cosmic Rays

Speaker: Giuseppe Di Sciascio

DiSciascio_CRA2023.pdf

12:20 → 14:00 Lunch break

14:00 → 14:35 Living in the Bubble: structure, formation, and how it affects us

Speaker: Efrem Maconi

Efrem Maconi - Living in the Bubble - emergencyPDF.pdf

Efrem Maconi - Living in the Bubble.pptx

MilkyWay-video-survey- emergency.mp4

14:35 → 15:10 CR anisotropy with IceCube

Speakers: Frank McNally (Mercer University) , Rasha Abbasi (Loyola University Chicago)

Anisotropy in IceCube - CRA 2023.pdf

CR Anisotropy with IceCube

15:10 → 15:45 Transport of Galactic Cosmic-Ray Nuclei

Speaker: Benedikt Schroer

schroer_cra2023.pdf

15:45 → 16:15 Coffee break

16:15 → 17:00 Cosmic rays in a turbulent interstellar medium: Recent progress and open questions

Speaker: Philipp Mertsch

Mertsch_CRA2023.pdf

17:00 → 18:00 Discussion

19:00 → 20:00 Welcome reception: Welcome Reception

Wednesday, 17 May

08:00 → 08:45 Registration

08:45 → 09:30 Selected Aspects of Magnetized Turbulence (with implications for CRs)

Speaker: Alex Lazarian

chicago2.pptx

09:30 → 10:00 Second order Fermi Acceleration in Galaxy Clusters

Speaker: Gianfranco Brunetti

Brunetti_Chicago23.pdf

Brunetti_Chicago23.ppt

10:00 → 10:30 CR Acceleration in Turbulent Magnetic Reconnection (remote)

Speaker: Elisabete de Gouveia Dal Pino (IAG - Universidade de São Paulo)

deGouveiaDalPino_CRA.pdf

deGouveiaDalPino_CRA.pptx

10:30 → 11:00 Coffee break

11:00 → 11:30 Cosmic ray diffusion in anisotropic MHD turbulence

Speaker: Siyao Xu

SiyaoXu_2023_May.pptx

11:30 → 12:00 Results from the High Altitude Water Cherenkov Observatory

Speaker: Miguel Mostafa

mostafa-HAWC-CRA.pdf

12:00 → 12:30 Constraining the sources of ultra-high-energy cosmic rays with the Pierre Auger Observatory

Speaker: Teresa Bister

6 - Bister_Chicago_2023_05.pdf

12:30 → 14:00 Lunch break

14:00 → 14:30 Results from TA

Speaker: Tareq Abu-Zayyad

cra2023-abuzayyad-tale-composition.pdf

14:30 → 15:00 Cosmic Ray Anisotropy with the Telescope Array

Speaker: Jihyun Kim

CRA2023_JKim.pdf

15:00 → 15:30 New Models of the Magnetic Field of the Galaxy

Speaker: Michael Unger

9 - Unger_CRA.pdf

15:30 → 16:00 Coffee break

16:00 → 16:45 UHECR anisotropies

Speaker: Glennys Farrar

10 - CRA23_051723.pdf

16:45 → 18:00 Discussion

Thursday, 18 May

08:00 → 08:45 Registration

08:45 → 09:30 Heliosphere in the Local Interstellar Medium

Speaker: Nick Pogorelov

Pogorelov_CRA2023final.pptx

09:30 → 10:00 The IBEX Ribbon and its Relation to the Solar-Interstellar Interaction (remote)

Speaker: Eric Zirnstein

CRA_Workshop_2023_Zirnstein_presentation_v2.pdf

10:00 → 10:30 Cosmic ray pitch angle anisotropies in the Very Local Interstellar Medium

Speaker: Jaime Rankin

Rankin_CRA-2023.pdf

10:30 → 11:00 Coffee break

11:00 → 11:45 Review of the Local ISM

Speaker: Jeff Linsky

LISM-Review.pptx

11:45 → 12:15 Turbulence in the local ISM

Speaker: Federico Fraternale

presentation_CRA_18May2023_Fraternale.pptx

12:15 → 12:45 The curious maximum-rigidity distribution of ultra-high-energy-cosmic-ray accelerators

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)

cra-oikonomou-final.pdf

12:45 → 14:15 Lunch break

14:15 → 14:45 Configuration of Interstellar Magnetic Field Surrounding the Heliosphere (remote)

Speaker: Priscilla Frisch

icecubeFrischuploaded.pptx

14:45 → 15:15 Heliosphere and TeV CR anisotropy

Speaker: Ming Zhang (Florida Institute of Technology)

zhang.pptx

15:15 → 15:45 Modeling of cosmic-ray anisotropy at TeV energies in an MHD model heliosphere

Speaker: Takashi Sako

Sako_CRA2023.pdf

15:45 → 16:15 Coffee break

16:15 → 17:00 The Relationship between the Local ISM Distribution and Milky Way Spiral Structure

Speaker: Robert Benjamin

CRanisotropy_Chicago_Benjamin2023.pptx

17:00 → 18:00 Discussion

19:00 → 22:00 Conference banquet

Friday, 19 May

08:45 → 09:30 IceCube: The first Decade of Neutrino Astronomy

Speaker: Francis Halzen (University of Wisconsin–Madison)

CRA23_Halzen.pptx

09:30 → 10:00 Cross-correlation studies with UHECRs (remote)

Speaker: Federico Urban

cra2023_urban.pdf

10:00 → 10:30 Coffee break

10:30 → 11:00 Local Sources of Cosmic Rays

Speaker: Igor Moskalenko

23.Moskalenko-16x9-Chicago.pdf

11:00 → 11:45 Wrapping up and Collecting thoughts on Cosmic Ray Astrophysics

Speaker: Pasquale Blasi

SummaryCRA.pdf

11:45 → 12:45 Discussion