5th Astro-COLIBRI multi-messenger astrophysics workshop

Session

Contributed talks

13 oct. 2026, 09:00

Amphitheater + Cathedrale+ Offices (Institut Pascal)

141. A real-time photon candidate event stream with AugerPrime data

Anastasia Baluta (University of Nova Gorica)

13/10/2026 09:00

Implementation of the ultra-high energy photon candidate data stream to AMON using AugerPrime data will benefit from our design of such a data stream, which has been approved by the Pierre Auger Collaboration for the implementation. The design is based on the analysis developed in a PhD thesis by Lukas Zehrer (2021) and supplied by an internal document (GAP2021_012) describing the data stream...

142. Multi-messenger astronomy with the Hybrid Elevated Radio Observatory for Neutrinos (HERON)

Paul Minodier (Institut d'Astrophysique de Paris)

13/10/2026 09:15

The Hybrid Elevated Radio Observatory for Neutrinos, or HERON, is a proposed detector concept for ultrahigh energy (E > 100 PeV) neutrinos. HERON consists of 24 compact phased radio arrays embedded within a larger sparse array of 360 standalone antennas, deployed along the side of a ~100 km mountain range in Argentina. Due to the high elevation observation sites and the long propagation length...

143. RubiCube: searching for counterparts of high-energy neutrino alerts with Rubin

Cristobal Zilleruelo (DESY)

13/10/2026 09:30

We are working on a framework to search for optical counterparts of high-energy neutrino alerts from IceCube in realtime. We will take a bayesian approach, where we will use photometric classifiers to identify the transient types and evaluate the probability of a source class emitting a neutrino. We believe this will help us identify the most likely counterpart of the neutrino so for ToO observations.

144. Gravitational wave detectability range informed by external messengers

Samuele Ronchini (Gran Sasso Science Institute)

13/10/2026 09:45

A rapid estimate of the detectability of gravitational waves (GWs) associated with astronomical transients is essential for optimizing multi-messenger follow-up observations and for understanding the physical origin of the transient. We introduce the Targeted Detectability Range (TDR), a method designed to rapidly evaluate the detection probability of compact binary coalescences under the...

145. How to turn alerts into forecasts using plasma physics

Patrick Reichherzer (University of Oxford)

13/10/2026 10:00

146. First twenty minutes of GRB afterglows in autonomous telescopes

Filip Novotný (Masaryk University)

13/10/2026 10:45

Robotic telescope networks equipped with next-generation automated follow-up pipelines are enabling systematic exploration of gamma-ray burst afterglows during the first 20 minutes after trigger, a regime that has historically remained sparsely sampled. High-cadence optical observations obtained in the earliest post-trigger seconds reveal temporal and spectral features inaccessible to later or...

147. Sixteen Months of EP follow-up at Wendelstein Observatory

Malte Busmann (University Observatory, Faculty of Physics, Ludwig-Maximilians-Universität München)

13/10/2026 11:00

We followed up on over 40 EP events between October 2024 and February 2026. Based on our observations and in combination with multi-wavelength data, we derive constraints on the energetics of the events.

148. A hidden population of long gamma-ray bursts from compact object mergers

Romain Maccary

13/10/2026 11:15

Gamma-ray bursts (GRBs) are powerful, brief flashes of gamma-rays produced either by the merger of two compact objects (Type-I) or by the core-collapse of some kind of massive star (Type-II). While short-duration GRBs have traditionally been associated with mergers and long GRBs with collapsars, an increasing number of long-duration events, such as GRB 230307A associated with kilonovae...

149. The Upper Limit on Synchrotron Photon Energies in GRBs"

Jesus Fernando Ramirez Hernandez

13/10/2026 11:30

Within the standard synchrotron model, electrons are typically accelerated by shock waves through the Fermi mechanism and subsequently gyrate around magnetic field lines, emitting photons. Nevertheless, a fundamental limit exists regarding the maximum energy an electron can acquire before it is entirely lost to radiation. We explore several models to estimate the Maximum energy radiated by the...

150. Probing particle acceleration in Gamma-ray Bursts through MeV afterglows

Shraddha Mohnani

13/10/2026 11:45

151. A multiwavelength view of a puzzling dragon.

Andrea Simongini

13/10/2026 12:00

In this contribution, I will present a comprehensive multiwavelength study of SN 2024jlc, a superluminous supernova (SLSN) that exploded on 2024 May 25 at a redshift of z = 0.039. With a peak g-band absolute magnitude of only −19.38 mag, it is among the least luminous SLSNe ever discovered. As one of the nearest SLSNe exploded in recent years, and among the closest ever observed, SN 2024jlc...

152. Real-time detection of lfaring states of blazars for an optical-gamma-ray connection

Julian Hamo (IJCLab)

13/10/2026 12:15

Blazars are among the most violent non-thermal sources in the universe, exhibiting dramatic variability across the electromagnetic spectrum. Yet, a fundamental question remains unanswered: how tightly coupled are their optical and gamma-ray emissions, and what does this tell us about the physical engines powering these objects? In this talk, I will present a multi-year study of optical and...

153. CanDIAPL - Enabling Data-Intensive, Multi-Messenger Astronomy at Scale

Ketan Sand (McGill University)

13/10/2026 14:00

The Canadian Data-Intensive Astrophysics Platform (CanDIAPL) aims to develop scalable cloud-based computing infrastructure and specialized software frameworks to enable the processing of petabyte-scale datasets generated by next-generation facilities such as the Vera C. Rubin Observatory and Square Kilometre Array (SKA) precursors. This initiative will include Realtime Analysis pipelines to...

154. AstroGenesis: A Domain-Aware Multi-Agent Model for Data-Driven Astrophysics

Narek Sahakyan (ICRANet Armenia IO)

13/10/2026 14:15

155. PyLMT: A transient detection pipeline for the 4-m International Liquid Mirror Telescope

Kumar Pranshu

13/10/2026 14:30

The 4m International Liquid Mirror Telescope (ILMT) is India's first optical survey telescope, which uses a spinning mercury mirror as its primary reflector. It is the only operational liquid mirror telescope globally, with a 22.3' FoV and limiting magnitude of g-mag ~22. The ILMT captures ~15 GB of imaging data per night, producing nearly 30 science frames. A key goal is discovering optical...

156. A Real-Time Scheduling Framework for Maximizing the Detection Probability of High-Energy Transients with Gamma-Ray Observatories

Yifan Tian (DESY)

13/10/2026 14:45

Real-time follow-up of high-energy transients requires rapid decisions under uncertainty: the source position, temporal evolution, spectrum, and detectability are often only partially constrained when an alert is received. This is particularly challenging for VHE gamma-ray observatories such as H.E.S.S. and CTAO. Existing follow-up strategies often do not fully account for source time...