[ASA] Fwd: [vlbi] Save the date! IAU Symposium 413 in Windhoek, January 18–22, 2027 {External}

[Hayley Bignall]

IAU Symposium 413

AGN Jets from Gamsberg to the Multi-Messenger Frontier

SAVE THE DATE!

January 18th – January 22nd, 2027 in Windhoek, Namibia

Relativistic jets from active galactic nuclei are among the Universe’s most
extreme particle accelerators. Blazars, with jets pointed toward Earth,
show dramatic multiwavelength variability and gamma-ray flares, offering
unique insights into particle acceleration, jet dynamics, and magnetic
field structure. Yet key processes, such as jet formation, the location of
high-energy emission, and the mechanisms driving flares, remain poorly
understood. This symposium brings together theorists, observers, and
instrument scientists to address these challenges, focusing on universal
jet physics across systems, including jet launching and collimation,
particle acceleration, magnetic-field evolution, multi-band flaring and
polarisation signatures, and multimessenger links involving neutrinos.
Comparative insights from other jetted sources, such as GRBs, TDEs, and
Galactic accreting systems, will broaden the scientific perspective.
Building on the progress surrounding the African Millimetre Telescope in
Namibia and the continued success of H.E.S.S., MAGIC, VERITAS, MeerKAT,
EHT, SALT, and Fermi, and the upcoming SKA, Vera C. Rubin Observatory,
CTAO, and ASTRI Mini-Array, this meeting will advance multimessenger
studies, foster international collaboration, and engage early-career
researchers and the growing African astronomy community.

The IAUS 413 will focus on recent studies in these fields and potential
future prospects and synergies among them. During this meeting, the topics
we will discuss include:

   -

   Universal dynamics & modelling: Identify fundamental processes of jet
   formation, composition, and acceleration across AGN, GRBs, and XRBs by
   employing advanced RMHD and PIC simulations to unify observed universal jet
   behaviours.
   -

   Emission & localisation: Characterise high-energy emission zones within
   relativistic outflows by analysing jet structure and magnetic-field
   evolution across diverse accretion and power regimes, from Galactic sources
   to the most distant quasars.
   -

   Multimessenger synergy: Evaluate the physical connections between
   flaring activity, neutrino production, and candidate multimessenger sources
   to build integrated theoretical frameworks for jet phenomena across all
   mass scales.
   -

   Polarimetry & variability: Utilise multi-band flares, multiwavelength
   variability, and polarisation signatures as high-fidelity probes to decode
   internal jet physics and particle acceleration mechanisms in X-ray Binaries
   and AGN.
   -

   Comparative astrophysics & scaling laws: Conduct cross-system studies
   (TDEs, AGN, and Galactic XRBs) to determine if particle acceleration and
   energy dissipation mechanisms are truly scale-invariant or fundamentally
   altered by the local environment.





Details
The 2027 IAUS413 will be held between January 18th – 22nd, 2027, in
Windhoek, Namibia, making it the 5th African country ever to host such an
event. The abstract submission/travel grant application
<https://url.au.m.mimecastprotect.com/s/JcWVCjZ1N7i30g17BsWfGcmTf6V?domain=drive.google.com>
deadline is July 15th and the registration deadline August 15th 2026. For
more information, contact the organisers via gfpara at utu.fi

Website
https://url.au.m.mimecastprotect.com/s/aYAvCk81N9trvg3MKtVhmcG4_Gi?domain=unam.edu.na

SOC Members
Chairs: Georgios F. Paraschos (FINCA/MRO/MPIfR), Elina Lindfors (Univ. of
Turku), Michael Backes (UNAM) Athira Bharathan (North-West Univ.), Hayley
Bignall (Manly Astro.), Markus Böttcher (North-West Univ.), Elisabete de
Gouveia Dal Pino (Univ. São Paulo), Charles Gammie (Univ.
Urbana-Champaign), Daryl Haggard (McGill Univ.), Michael Johnson (Harvard
CfA), Dongjin Kim (CSIRO), Sthabile Kolwa (Univ. South Africa), Shoko
Koyama (Niigata Univ.), Ioannis Liodakis (FORTH), Yosuke Mizuno (Shanghai
Jiao Tong Univ.), Rodrigo Nemmen (Univ. São Paulo), Erin O’Sullivan (Univ.
of Uppsala)

Confirmed Invited Speakers
To be announced soon.
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