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PAiP-2025 conference ”Particle Astrophysics in Poland”

20–22 Feb 2025
Rektorska 4, Warsaw University of Technology
Europe/Warsaw timezone

LOC

Session

Particle Acceleration

22 Feb 2025, 11:00
room 1.01 (Rektorska 4, Warsaw University of Technology)

room 1.01

Rektorska 4, Warsaw University of Technology

Conveners

Particle Acceleration

  • Lukasz Stawarz (Astronomical Observatory of the Jagiellonian University)

Presentation materials

There are no materials yet.

  1. 145. Recent Results on Particle Acceleration at Non-relativistic Shocks
    Dr Oleh Kobzar (Astronomical Observatory of the Jagiellonian University)
    22/02/2025, 11:00
    Particle Acceleration
    Regular plenary talk

    Shock waves in cosmic plasma are generally considered as most appropriate candidates for the role of particle accelerators, being the possible sources of relativistic electrons responsible for the non-thermal electromagnetic radiation (radio, X-rays, gamma) as well as cosmic rays (CR). They can be found in numerous astrophysical objects widely varying in scales, from Earth’s bow shock and...

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  2. 111. Particle acceleration in strongly magnetised mildly relativistic shocks
    Gabriel Torralba Paz (Institute of Nuclear Physics Polish Academy of Sciences)
    22/02/2025, 11:15
    Particle Acceleration
    Regular plenary talk

    Jets in active galactic nuclei (AGN) are known for their intense X-ray and gamma-ray emission, originating from non-thermal particles. These sources are also linked to high-energy neutrino events and are considered potential sites of ultra-high-energy cosmic ray production. Accelerated particles can be generated in shock waves formed in collisionless AGN plasmas. We report on our recent...

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  3. 126. Relativistic reconnection as source of high-energy particles
    Krzysztof Nalewajko (Nicolaus Copernicus Astronomical Center, PAS, Warsaw, Poland)
    22/02/2025, 11:30
    Particle Acceleration
    Regular plenary talk

    Astrophysical magnetic fields may store significant amounts of energy. The process of magnetic reconnection can release this energy fairly rapidly and transfer it directly to particles. In the relativistic regime, when magnetic energy density dominates the rest-mass plasma density, most of participating particles can achieve relativistic energies. Relativistic reconnection is a complex process...

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  4. 124. Reinterpretation of the Fermi acceleration of cosmic rays in terms of the ballistic surfing acceleration in supernova shocks
    Prof. Krzysztof Stasiewicz (Centrum Badań Kosmicznych PAN)
    22/02/2025, 11:45
    Particle Acceleration
    Regular plenary talk

    The applicability of first-order Fermi acceleration in explaining the cosmic ray spectrum has been reexamined using recent results on shock acceleration mechanisms from the Multiscale Magnetospheric mission in Earth's bow shock. It is demonstrated that the Fermi mechanism is a crude approximation of the ballistic surfing acceleration (BSA) mechanism. While both mechanisms yield similar...

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  5. 75. Recent progress in understanding of the physics of radio pulsars
    Andrey Timokhin (University of Zielona Gora)
    22/02/2025, 11:55
    Particle Acceleration
    Regular plenary talk

    Recent progress in understanding the physics of radio pulsars

    Radio pulsars, discovered 57 years ago, remain one of the profound puzzles of
    the modern astrophysics, as we still lack self-consistent quantitative models of
    emission processes in pulsar magnetospheres. However, the advent of powerful
    computers and significant improvements in numerical techniques for modeling
    relativistic...

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