Florian Eppel

About

My research focuses on compact radio jets in active galaxies, specifically examining neutrino emission from blazars and the radio-spectral variability of TeV-emitting AGN. I investigate phenomena like the Doppler-Crisis and study multiwavelength variability properties, with attention to correlated variability across TeV, GeV, X-ray, optical, and radio wavebands. A key aspect of my research is exploring the sub-parsec structure of radio jets using Very Long Baseline Interferometry (VLBI). Additionally, I am interested in Fast Radio Bursts, particularly in coordinated radio/X-ray observational campaigns.

Education

PhD Candidate in Physics

2022 - now

Julius-Maximilians-Universität Würzburg, Germany & Max-Planck-Institute for Radioastronomy, Bonn, Germany

In my PhD project, I am working on radio observations (interferometric and single-dish) of neutrino-candidate blazars to find characteristic similarities or differences in the sub-pc scale structure of these sources. I am mostly working on archival data of TXS 0506+056 and PKS 1502+106, including new proprietary data collected through a successful observing proposal that I have submitted as principal investigator.

Physics (M. Sc.)

2019 - 2021

Julius-Maximilians-Universität Würzburg, Germany & University of Texas at Austin, TX

For my master's project, I developed an automated analysis pipeline for the Effelsberg 100-m telescope to evaluate single-dish flux density measurements. Moreover, I performed variability studies on a target sample of TeV-emitting blazars.

Physics (B. Sc.)

2016 - 2019

Julius-Maximilians-Universität Würzburg, Germany

Publications

Here you can find a selection of my publications, a full list is available on NASA ADS

Constraints on the X-ray-to-radio fluence ratio of FRB 20240114A

Eppel et al. 2025, A&A, 695, L10

TELAMON: Effelsberg monitoring of AGN jets with very-high-energy astroparticle emission.

Eppel et al. 2024, A&A, 684, A11

VLBI Probes of Jet Physics in Neutrino-Candidate Blazars

Eppel et al. 2023, PoS, 444, 1199

VLBI Scrutiny of a New Neutrino-Blazar Multiwavelength-Flare Coincidence

Eppel et al. 2023, Proceedings of the IAU, 375, 91

Outreach

I am passionate about science outreach, actively engaging in projects that make complex astronomical concepts accessible to the public. Feel free to explore some of the projects I have worked on:

VLBI-Visualizer

Main Development by FE, Design: P. Frecot

Radio.Galaxy

An AR-based VLBI game

Night of Science 2019

Main Organization

LightSky VR

Web-VR app to visualize light pollution (Idea & Design: P. Frecot)

Software

Here you can find a selection of useful software and coding projects I’ve developed, ranging from data analysis tools to automation scripts, tailored for both astronomy and general scientific computing. More details are availabe on my GitHub profile.

UBB Tools

Python toolkit to handle timing data from the Effelsberg Ultra-Broad-Band receiver

TELAMON Database Website

Data Management Website for the TELAMON project built with Ruby on Rails

Contact

Feel free to reach out if you have questions or are interested in collaborating!

Email Me

florian@eppel.space