CTA-KM3NeT community day

Monday 8 Sept 2025, 09:00 → 20:15 Europe/Amsterdam

H036 (NIKHEF)

Aart Heijboer, Dorothea Samtleben, Jacco Vink (University of Amsterdam), Manuela Vecchi (University of Groningen), Sera Markoff (API/GRAPPA, University of Amsterdam)

We are excited to announce the first national multi-messenger synergy event to be held on September 8th at NIKHEF.  This all-day, in person event is meant to be the first in a series of focused meetings to build more synergy and collaboration within the Dutch multi-messenger community, and is open to all Dutch astronomers and physicists working on (or interested in!) multi-messenger astro(particle)physics and other topics, including transients and gravitational wave events.  This first meeting will focus on CTAO/KM3NeT science and synergies with Dutch astronomy and physics, and will feature several external, invited speakers as well as short contributed talks, lightening group introductions, and community discussion/brainstorming. 

10:00 → 10:20 Walk in

10:20 → 10:30 Welcome

10:30 → 12:00 Talks

S. Markoff, J. Vink, Ph. Moesta, S. Ando

10:30 The exciting (and imminent!) science of CTAO and its connection to Dutch research lines

Speaker: Sera Markoff (API/GRAPPA, University of Amsterdam)

Markoff_CTAO_slides.pdf

11:00 KM3NeT and the potential for multi-messenger astrophysics

Speaker: Aart Heijboer

gammadag_final.pptx

11:30 Detecting Gamma‑Ray Counterparts of High‑Energy Neutrino Events with KM3NeT and CTAO

Speaker: Gloria Maria Cicciari (University of Palermo)

CTAO_KM3NeT_Cicciari_08092025.pdf

12:00 → 13:00 Lunch

13:00 → 14:25 Talks

S. Markoff, J. Vink, Ph. Moesta, S. Ando

13:00 Extra galactic transients and the role of CTA + KM3NeT synergies

Speaker: Sjoert van Velzen (Leiden Observatory)

Transients_CTAO_KM3NeT_25min.pdf

13:30 A joint-likelihood analysis of CTAO/KM3NeT data to constrain hadronic gamma-ray contributions

Speaker: Tim Unbehaun (ECAP, FAU Erlangen-Nürnberg)

nikhev-2025-tunbehaun.pdf

14:00 Building the SSTs of CTAO, and the Dutch role

Speaker: Richard White (MPIK)

d250903-RW-NL-SST-Small.pdf

14:25 → 14:50 Talks: Lightning talks

S. Markoff, J. Vink, Ph. Moesta, S. Ando

Conveners: Jacco Vink (University of Amsterdam), Manuela Vecchi (University of Groningen), Philipp Moesta (University of Amsterdam), Ramon Navarro (NOVA), Sera Markoff (API/GRAPPA, University of Amsterdam), Shin'ichiro Ando (University of Amsterdam)

14:50 → 15:40 Discussion on astroparticle physics strategy

15:40 → 16:00 Coffee break

16:00 → 17:45 Contributed talks

16:00 Very-high-energy emission from microquasar jets

Speaker: Olivera Nieto (University of Amsterdam)

CTAO-KM3NET_workshop_uQ_oliveranieto.pdf

16:15 Early Science Highlights with Large-Sized Telescope at CTAO-North

Speaker: Dr Vadym Voitsekhovsky (University of Amsterdam)

16:30 Multimessenger Signals from Core-Collapse Supernovae

Speaker: Pravita Allur (University of Amsterdam)

16:45 TeV Gamma Rays (and Neutrinos) as a Probe of Solar Magnetic Fields

Speaker: Shin'ichiro Ando (University of Amsterdam)

Ando_CTAO-KM3NeT.pdf

17:00 Expanding the landscape of extreme transients

Speaker: Andrew Levan (Radboud University)

lanscape_relativistic_transients_andrewlevan_v2.pdf

17:15 Follow up of gamma-ray burst afterglows at the highest resolution

Speaker: Benito Marcote (JIVE & ASTRON)

Marcote_talk_cta.pdf

17:45 → 19:00 Borrel