Dr Thierry Montmerle
In massive star-forming regions, the evolution of massive stars (M > 20 Msol) forming "OB associations" is so rapid that they explode as supernovae close to their birthplaces, the molecular clouds. Before reaching this final stage, they lose a significant fraction of their mass via dense stellar winds. The result is a feedback effect, in the form of vast hot plasma bubbles filling...
Mr Ignasi Reichardt (IFAE Barcelona)
Located in a dense complex environment, W51C provides an excellent scenario to probe accelerated protons in SNRs and their interaction with surrounding target material. Here we report the observation of extended Very High Energy (VHE) gamma-ray emission from the W51C supernova remnant (SNR) with MAGIC. Detections of extended gamma-ray emission in the same region have already been reported by...
Dr Matthieu Renaud (LUPM Montpellier)
The Cherenkov Telescope Array (CTA) project, currently under its Preparatory Phase, is an initiative to build the next generation of ground-based very high energy gamma-ray instruments. It will serve as an open observatory to a wide astrophysics community and will provide a deep insight into the non-thermal high-energy universe. It foresees a factor of ~10 improvement in sensitivity above 100...
Dr Francesco Giordano (university & INFN Bari)
Dr Ryan Chaves (MPIK Heidelberg)
Dr Fabio Acero (LUPM Montpellier)
PSR J0855–4644 is an energetic pulsar (Edot = 1.1 × 10^36 erg/s) with a period of 65 ms recently discovered near the South-East rim of the supernova remnant RX J0852.0-4622 (aka VelaJr) by the Parkes Multibeam Survey.The position of the pulsar is in spatial coincidence with an enhancement in X-rays and TeV gamma-rays, which could represent its pulsar wind nebula (PWN). We have revealed with...
Mr Jérémie Méhault (LUPM Monptellier)
Supernova from massive stars are exploding in giant molecular cloud (MC). Thus it is possible to see supernova remnants (SNR) expending in dense material. The physical interaction between SNR and MC can produce OH maser (1720 MHz) emission tracing the shocked surrounding medium. High and very-high energy (HE and VHE) gamma rays have been detected in coincidence with OH maser,...
Dr Stefano Gabici (APC Paris)
48. Fermi-LAT detection of gamma-ray emission in the vicinity of the star forming regions W43 and Westerlund 2
Dr Marianne Lemoine-Goumard (CENBG Bordeaux)
Particle acceleration in massive star forming regions can proceed via a large variety of possible emission scenarios, including high-energy gamma-ray production in the colliding wind zone of the massive Wolf-Rayet binary (here WR 20a and WR121a), collective wind scenarios, diffusive shock acceleration at the boundaries of wind-blown bubbles in the stellar cluster, and outbreak phenomena from...
13. The Fermi Large Area Telescope unveils a cocoon of freshly-accelerated cosmic rays in the Cygnus X region
Mr Luigi Tibaldo (university & INFN Parma)
Supernova remnants are generally considered as the accelerators of the Galactic cosmic rays. The majority of supernovae have massive star progenitors and explode in a highly turbulent medium sustained by stellar winds and intense ionizing radiation in and around the parent stellar clusters. The early evolution of cosmic rays after their injection in the turbulent medium and the potential...