Post-doctoral position in very-high-energy astrophysics - Gammapy for the ACME European project (M/F)

Job Description

Missions

Gammapy is an open Python library for astrophysical very-high-energy (VHE) gamma-ray data analysis. Amongst its features, it enables joint fits of heterogeneous data sets e.g. from different event types, from differents gamma-ray instruments. Some work have also demonstrated that multi-wavelength (from optical to ultra-high-energy photons) or multi-messenger (gaamma-ray and neutrino) are possible with Gammapy.
The main objective of this position is to set up the Gammapy ability to jointly analyse VHE gamma rays ans neutrinos. The retained candidate will implement support of VHE neutrino Instrument Response Files (IRFs) in the Gammapy library. She/he will also develop tools to support proper neutrino analysis methods in Gammapy, in particular unbinned forward folding techniques.
The addition of these deatures will enables researches on different topics, e.g. studies of transient phenomena in the low count regime, joint gamma/neutrino studies of VHE data. The requited person will achieve these research studies within the H.E.S.S., CTAO or KM3NeT collaboration.

Activity

- Gammapy developer (code, test, benchmark, documentation)
- Participation to the Gammapy user support
- Science analysis of data from the H.E.S.S. experiment or/and the KM3NeT telescopes

Your Profil

Skills

Knowledge :
- Very good knowledge in Python
- Good knowledge in statistics
- Expertise in VHE high-level analysis
- Knowledge in VHE gamma-ray and neutrino detectors
- Proficiency in English (written and oral)
Know-how :
- Experience in the design and the development of complex software within an international organisation
- Very good knowledge in Unix (Mac OS or Linux)
- Experience with collaborative development software and platforms (e.g. git, GitHub)
- Experience with the scientific python ecosystem
- Some experience in code optimisation (time and memory) appreciated
- Expertise in the statistical techniques of forward-folding
- Knowledge in the VHE Instrument Response Files very appreciated
- Knowledge in Gammapy highly encouraged
Personal skills :
- Autonomy
- Team spirit
- Commitment and responsibility

Your Work Environment

Gammapy is an open research library developed by a consortium of French, German, Spanish and Italian developers. It will be the main library for the Science Analysis Tool (SAT) of the CTA observatory (CTAO), which will be distributed freely. The APC and LUX teams are heavily involved in the Gammapy project since its inception and has major responsabilities within the project (Lead developer and Project Manager in APC).
Some members of the project's team are strongly involved in the H.E.S.S. experiment (responsible for an analysis chain that produces high-level H.E.S.S. FITS data) and heavily involved for CTAO, both on the scientific side (AGN, redshift, PSR/PWN, SNR, galactic center, PeVatrons) and on the software side (data model, science analysis tool, proposal handling tools, science data challenge, science platform, data dissemination). Some other members are strongly involved in the KM3NeT observatory (data analysis for neutrino oscillation and astrophysical studies, searches for core-collapse supernovæ, for neutrinos from the galactic plane, and for neutrinos in coincidence with blazards and gravitational wave sources). The recruited candidate will then work closely with this team, and within the APC "High Energy Astrophysics" theme group (Integral, SVOM, Athena, H.E.S.S., CTAO, KM3NeT, Jem-EUSO, theory) and the LUX "Relativistic Astrophysics" group.
This position is funded by the European project ACME (Astrophysics Centre for Multimessenger studies in Europe, HORIZON-INFRA-2023-SERV-01). It involves 40 partners of 15 countries, over 30 research infrastructures (observatories and detectors, cyberinfrastructures and expertise centers) from Astronomy and Astroparticle domains, covering GW, Gamma & X-rays, neutrinos, CR, radio, optical. Within this project, Gammapy will be improved to enable multi-messenger data analysis workflows.

Compensation and benefits

Compensation

Between 3132.83€ and 4343.20€ gross per month depending on the experience

Annual leave and RTT

44 jours

Remote Working practice and compensation

Pratique et indemnisation du TT

Transport

Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€

About the offer

About the CNRS

The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.

CNRS

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