Département de Physique des Particules

Pendant ce stage, nous analyserons les données obtenues par l'instrument H.E.S.S. lors d'observations récentes de cibles d'opportunité. Les interféromètres d'ondes gravitationnelles Virgo, LIGO et KAGRA prennent actuellement des données et des observations passionnantes sont menées dans toute la gamme des longueurs d'onde. Nous disposerons donc d'un vaste ensemble de données pour rechercher des contreparties à très haute énergie aux signaux multimessagers.

During the internship we will analyze data obtained by the H.E.S.S. instrument in recent target-of-opportunity observations. The gravitational wave interferometers Virgo, LIGO, and KAGRA are currently taking data and exciting observations are being conducted across the full multi-wavelength range. We will thus have an extensive dataset at our disposal to search for very-high energy counterparts to the multi-messenger signals.

Pendant ce stage, nous analyserons les données obtenues par l'instrument H.E.S.S. lors d'observations récentes de cibles d'opportunité. Les interféromètres d'ondes gravitationnelles Virgo, LIGO et KAGRA prennent actuellement des données et des observations passionnantes sont menées dans toute la gamme des longueurs d'onde. Nous disposerons donc d'un vaste ensemble de données pour rechercher des contreparties à très haute énergie aux signaux multimessagers.

H.E.S.S. is a system of Imaging Atmospheric Cherenkov Telescopes that investigates cosmic gamma rays in the energy range from 10s of GeV to 10s of TeV. The name H.E.S.S. stands for High Energy Stereoscopic System, and is also intended to pay homage to Victor Hess , who received the Nobel Prize in Physics in 1936 for his discovery of cosmic radiation. H.E.S.S. is located in Namibia, near the Gamsberg mountain, an area well known for its excellent optical quality. The first of the four telescopes of Phase I of the H.E.S.S. project went into operation in Summer 2002. A much larger fifth telescope - H.E.S.S. II - is operational since July 2012, further improving sensitivity, extending the energy range and allowing for very rapid reactions to transient events. The H.E.S.S. observatory is operated by an international collaboration of more than 170 scientists, from 32 scientific institutions and 12 different countries.

Since the first direct detections of Gravitational Waves in 2015, a new field of astrophysics and a new window to the universe is opening up: multi-messenger astrophysics. In this novel domain, we are combining information from various observatories across the electromagnetic spectrum with data obtained from gravitational wave observatories and high-energy neutrino telescopes. In August 2017, Virgo and LIGO detected the first gravitational waves emitted by the merger of a binary neutron star system. The subsequent detection of the same event across a large range of the electromagnetic spectrum is a major milestone in the field and produced a wealth of new information (and new questions) about these violent events. The H.E.S.S. collaboration is actively participating in these follow-up observations of Gravitational Waves and other exciting events like Gamma-Ray Burst, high-energy neutrinos, Fast Radio Bursts, etc. Fabian Schüssler, the tutor for the internship proposed here, leads the dedicated working group within the H.E.S.S. collaboration.

During the internship we will analyze data obtained by the H.E.S.S. instrument in recent target-of-opportunity observations. The gravitational wave interferometers Virgo, LIGO, and KAGRA are currently taking data and exciting observations are being conducted across the full multi-wavelength range. We will thus have an extensive dataset at our disposal to search for very-high energy counterparts to the multi-messenger signals.
The tutor is also leading the platform Astro-COLIBRI (cf. https://astro-colibri.science). Contributions to the development of the platform or its use for additional observations will thus be possible during the internship.

The proposed internship is a very good introduction to the PhD thesis topic proposed by F. Schussler at IRFU/CEA Paris-Saclay. Start of the PhD project is October 2024. Details can be found on: https://www.multimessenger-astronomy.com

CONTACT
Fabian Schüssler: fabian.schussler@cea.fr, Tel.: 01 69 08 30 20
Homepage: https://www.multimessenger-astronomy.com
Twitter: @FabianSchussler

astronomy, science, multi-messenger, realtime, alerts, GRBs, FRBs, neutrinos, astrophysics