Space and Astro: Jets, Shocks, and Relativistic Plasmas

Presentations

• Control of Jet Velocity and Internal Plasma Conditions of Conical Wire Array Plasma Jets

  ORAL

  Nov. 20, 2025, 2:00 PM – Nov. 20, 2025, 2:12 PM

  Publication: Izquierdo, L., Veloso, F., Escalona, M., Valenzuela-Villaseca, V., Avaria, G., & Valenzuela, J. (2025). Influence of Conical Wire Array Geometry on Flow and Temperature Profiles Measured via Thomson Scattering and Optical Techniques. arXiv preprint arXiv:2507.05652.

  Presenters

  • Luisa Fernanda Izquierdo

    Universidad Catolica de Chile

  Authors

  • Luisa Fernanda Izquierdo

    Universidad Catolica de Chile

  • Felipe Veloso

    PontificiaUniversidad Catolica de Chile

  • Miguel Escalona

    Pontificia Universidad Católica de Chile

  • Vicente Valenzuela-Villaseca

    Princeton University, Department of Astrophysical Sciences

  • Gonzalo Avaria

    Federico Santa Maria Technical University

  • Julio C Valenzuela

    Pontificia Universidad Católica de Chile

  View abstract →

• Non-thermal particle acceleration in rotating jets

  ORAL

  Nov. 20, 2025, 2:12 PM – Nov. 20, 2025, 2:24 PM

  Presenters

  • Gabrielle Guttormsen

    University of California, Los Angeles

  Authors

  • Gabrielle Guttormsen

    University of California, Los Angeles

  • Frederico Fiuza

    Instituto Superior Tecnico

  • Paulo Alves

    University of California, Los Angeles

  View abstract →

• An outflow from the X-ray corona as the origin of millimeter emission from radio-quiet AGN

  ORAL

  Nov. 20, 2025, 2:24 PM – Nov. 20, 2025, 2:36 PM

  Presenters

  • Amelia Hankla

    University of Maryland College Park

  Authors

  • Amelia Hankla

    University of Maryland College Park

  • Alexander A Philippov

    University of Maryland College Park

  • Rostom Mbarek

    University of Maryland, College Park

  • Richard Mushotzky

    University of Maryland, College Park

  • Gibwa Musoke

    University of Toronto

  • Daniel Groselj

    KU Leuven

  • Matthew Liska

    Georgia Institute of Technology

  View abstract →

• Parametric Study of Current Sheets and Vorticity Sheets in Relativistic Turbulence

  ORAL

  Nov. 20, 2025, 2:36 PM – Nov. 20, 2025, 2:48 PM

  Presenters

  • Zachary Davis

    University of Hawaii at Manoa

  Authors

  • Zachary Davis

    University of Hawaii at Manoa

  • Luca Comisso

    Columbia University

  • Colby C Haggerty

    University of Hawaii at Manoa

  • Joonas Nättilä

    University of Helsinki

  View abstract →

• Dissipation and particle acceleration at intermittent structures with velocity and magnetic shear: Interaction of Kelvin-Helmholtz and Drift-Kink instabilities

  ORAL

  Nov. 20, 2025, 2:48 PM – Nov. 20, 2025, 3:00 PM

  Publication: Dissipation and particle acceleration at intermittent structures with velocity and magnetic shear: Interaction of Kelvin-Helmholtz and Drift-Kink instabilities (in prep.)

  Presenters

  • Tsun Hin Navin Tsung

    University of Colorado, Boulder

  Authors

  • Tsun Hin Navin Tsung

    University of Colorado, Boulder

  • Dmitri A Uzdensky

    University of Oxford

  • Mitchell C Begelman

    JILA, University of Colorado Boulder

  • Gregory R Werner

    University of Colorado, Boulder

  View abstract →

• Magnetic Field Curvature and Its Role in Particle Acceleration by Relativistic Turbulence

  ORAL

  Nov. 20, 2025, 3:00 PM – Nov. 20, 2025, 3:12 PM

  Presenters

  • Samuel Sebastian

    University of Florida

  Authors

  • Samuel Sebastian

    University of Florida

  • Luca Comisso

    Columbia University

  View abstract →

• Upstream Ion Dynamics in Relativistic Collisionless Electron-Ion Shocks

  ORAL

  Nov. 20, 2025, 3:12 PM – Nov. 20, 2025, 3:24 PM

  Publication: In preparation: Ion dynamics in upstream of relativistic collisionless electon/ion shocks

  Presenters

  • Neda Naseri

    Adelphi University

  Authors

  • Neda Naseri

    Adelphi University

  • Wojciech Rozmus

    Univ of Alberta

  • Gennady Shvets

    Cornell University

  View abstract →

• Particle-in-Cell Simulations on Collisionless Shocks and Particle Acceleration in Black Hole Coronae

  ORAL

  Nov. 20, 2025, 3:24 PM – Nov. 20, 2025, 3:48 PM

  Presenters

  • Minh Nhat Ly

    The University of Osaka

  Authors

  • Minh Nhat Ly

    The University of Osaka

  • Takayoshi Sano

    The University of Osaka

  • Yoshiyuki Inoue

    The University of Osaka

  • Yasuhiko Sentoku

    Osaka University, The University of Osaka

  View abstract →

• Kinetic simulations of electron acceleration at shock waves in plasma with pre-existing turbulence

  ORAL

  Nov. 20, 2025, 3:48 PM – Nov. 20, 2025, 4:00 PM

  Publication: [1] Fulat, K., Bohdan, A., Torralba Paz, G., & Pohl, M. (2023). Kinetic Simulations of Nonrelativistic High-mach-number Perpendicular Shocks Propagating in a Turbulent Medium. The Astrophysical Journal, 959(2), 119. https://doi.org/10.3847/1538-4357/ad04dc<br>[2] Fulat, K., Moore, E., Alawashra, M., Tsirou, M., Bohdan, A., Amano, T., & Pohl, M. (2025). in preparation<br>[3] Fulat, K. & Zweibel, E. (2025) in preparation

  Presenters

  • Karol Fulat

    University of Wisconsin-Madison / SCEECS

  Authors

  • Karol Fulat

    University of Wisconsin-Madison / SCEECS

  • Ellen Gould Zweibel

    OCC, University of Wisconsin - Madison

  View abstract →

• The Division of Energy Between Ion Subpopulations in Collisionless Supercritical Quasiperpendicular Shocks

  ORAL

  Nov. 20, 2025, 4:00 PM – Nov. 20, 2025, 4:12 PM

  Presenters

  • Alberto Felix

    University of Iowa

  Authors

  • Alberto Felix

    University of Iowa

  • Gregory Gershom Howes

    University of Iowa

  • Collin Robert Brown

    Naval Research Lab, University of Iowa

  • Colby C Haggerty

    University of Hawaii at Manoa

  View abstract →

• Two-dimensional particle-in-cell simulations of highly oblique collisionless shock acceleration of electrons and ions

  ORAL

  Nov. 20, 2025, 4:12 PM – Nov. 20, 2025, 4:24 PM

  Publication: 1. N Kumar and B. Reville, "Nonthermal Particle Acceleration at Highly Oblique Nonrelativistic Shocks", ApJL, 921, L14 (2021).<br>2. N. Kumar, "Two-dimensional PIC simulations of highly oblique non-relativistic shocks" (in preparation)

  Presenters

  • Naveen Kumar

  Authors

  • Naveen Kumar

  View abstract →

• Shock acceleration with cosmic ray backreaction in high Mach number collisionless shocks.

  ORAL

  Nov. 20, 2025, 4:24 PM – Nov. 20, 2025, 4:36 PM

  Presenters

  • Anatoly Spitkovsky

    Princeton University

  Authors

  • Anatoly Spitkovsky

    Princeton University

  • Siddhartha Gupta

    Princeton University

  • Xiaochen Sun

    Princeton University

  View abstract →

• Understanding the enigmatic "zebra"-like spectrum of the Crab pulsar radio interpulse

  ORAL

  Nov. 20, 2025, 4:36 PM – Nov. 20, 2025, 4:48 PM

  Publication: [1] MV Medvedev, "Origin of Spectral Bands in the Crab Pulsar Radio Emission", Physical Review Letters, 133, 205201 (2024); DOI: 10.1103/physrevlett.133.205201<br>[2] MV Medvedev, "Gravity and plasma optics shape the Crab pulsar radio emission" (in prep.)

  Presenters

  • Mikhail V. Medvedev

    University of Kansas

  Authors

  • Mikhail V. Medvedev

    University of Kansas

  View abstract →