Chaitanya Priyadarshi

Chaitanya Priyadarshi

he/him

Astrophysics Researcher peering at Cosmic Rays through different lenses

Talks and presentations

Search for UHE photon sources using direction-time clustering algorithms with a BDT particle discriminant

July 02, 2026

Conference talk, Hospederia San Martin Pinario, Santiago de Compostela, Spain

The European Cosmic Ray Symposium (ECRS) is held every two years in one of the European countries. The main goal of the Symposia is to gather European Physics community performing research of cosmic rays and related fields, to present recent results, newly emerging ideas and forthcoming experiments. I participated in the 29th edition of the Symposia in the last week of June and first week of July 2026 and presented the usage of a modified clustering algorithm in the search of ultra-high-energy photon sources, from a list of assumed “PeVatron” sources.

Can we see light in the ultra-high-energy sky?

February 10, 2026

Seminar talk, Saha Institute of Nuclear Physics, Kolkata, India

Saha Institute of Nuclear Physics, Kolkata is an Institute of Basic Research and Training in Physical and Biological Sciences under the Department of Atomic Energy, Government of India. I was invited to present a seminar hosted by the High Energy Nuclear & Particle Physics Division (Group B) at the institute. My talk was summarizing our current photo-graph of the universe in the ultra-high-energy band, the different strong constraints on the diffuse photon flux set by the Pierre Auger Observatory, and on what can we expect in the near future, with upgraded detectors and data analysis techniques.

Ultra-High-Energy Photon Searches with the Pierre Auger Observatory: Constraints, Multi-messenger Synergies, and Future Prospects

November 05, 2025

Conference talk, The University-Enterprise Foundation of the University of Valencia (ADEIT), Valencia, Spain

TeV Particle Astrophysics Conference (TeVPA) is an international conference focused on the field of Particle Astrophysics, covering exciting and timely topics such as cosmic ray physics, gamma-ray astronomy, neutrino astronomy, cosmology, direct and indirect searches for dark matter, gravitational waves, and connections to particle physics. I participated in the 20th edition of the Conference in November 2025 and presented at the behest of the Pierre Auger Collaboration, on a summary of the investigations for finding ultra-high-energy photons by the Pierre Auger Observatory.

The Analysis of the first blazars by the Large Size Telescope (LST) of the Cherenkov Telescope Array Observatory (CTAO)

November 03, 2025

Conference talk, The University-Enterprise Foundation of the University of Valencia (ADEIT), Valencia, Spain

TeV Particle Astrophysics Conference (TeVPA) is an international conference focused on the field of Particle Astrophysics, covering exciting and timely topics such as cosmic ray physics, gamma-ray astronomy, neutrino astronomy, cosmology, direct and indirect searches for dark matter, gravitational waves, and connections to particle physics. I participated in the 20th edition of the Conference in November 2025 and presented at the behest of the CTAO-LST Collaboration, on a co-authored published work.

Space-Time Clustering analysis using Python

May 23, 2025

Talk, Centro Convegni 'Luigi Zordan', L'Aquila, Italy

During the Pierre Auger Collaboration Analysis Meeting held on May 2025, I presented updates on a co-authored work, including an introduction to the uhecluster package.

Analysis with First Data from Large Size Telescope of Cherenkov Telescope Array

September 18, 2021

Talk, Centro de Ciencias de Benasque Pedro Pascual, Benasque, Spain

The TAE (Taller de Altas Energías) - Workshop on High Energy Physics is an international workshop aimed at completing the education of first and second year graduated students who are starting their research on experimental or theoretical High Energy Physics, Astroparticles and Cosmology. I attended the workshop in September 2021 and gave a student presentation on the Analysis of first data from LST-1 of the next-generation ground-based gamma-ray observatory, Cherenkov Telescope Array Observatory. This was based on my PhD work until then.