Investigating the Role of Pre-supernova Massive Stars in the Acceleration of Galactic Cosmic Rays

Michaël De Becker; Santiago del Palacio; Paula Benaglia; Anandmayee Tej; Benito Marcote; Gustavo Esteban Romero; Valenti Bosch-Ramon; C. H. Ishwara-Chandra

doi:10.25518/0037-9565.11783

Bulletin de la Société Royale des Sciences de Liège

0037-9565 1783-5720

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Michaël De Becker, Santiago del Palacio, Paula Benaglia, Anandmayee Tej, Benito Marcote, Gustavo Esteban Romero, Valenti Bosch-Ramon & C. H. Ishwara-Chandra

Investigating the Role of Pre-supernova Massive Stars in the Acceleration of Galactic Cosmic Rays

(Volume 93 - Année 2024 — No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation)

DOI: 10.25518/0037-9565.11783

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Abstract

Galactic cosmic rays (GCRs) constitute a significant part of the energy budget of our Galaxy, and the study of their accelerators is of high importance in modern astrophysics. Their main sources are likely supernova remnants (SNRs). These objects are capable to convert a part of their mechanical energy into accelerated charged particles. However, even though the mechanical energy reservoir of SNRs is promising, a conversion rate into particle energy of 10 to 20% is necessary to feed the population of GCRs. Such an efficiency is however not guaranteed. Complementary sources deserve thus to be investigated. This communication aims to address the question of the contribution to the acceleration of GCRs by pre-supernova massive stars in binary or higher multiplicity systems.

Keywords : Galactic cosmic rays, Massive binaries, Supernova remnants, Particle acceleration, Non-thermal processes

To cite this article

Michaël De Becker, Santiago del Palacio, Paula Benaglia, Anandmayee Tej, Benito Marcote, Gustavo Esteban Romero, Valenti Bosch-Ramon & C. H. Ishwara-Chandra, «Investigating the Role of Pre-supernova Massive Stars in the Acceleration of Galactic Cosmic Rays», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 93 - Année 2024, No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, 536-543 URL : https://popups.uliege.be/0037-9565/index.php?id=11783.

About: Michaël De Becker

Space sciences, Technologies and Astrophysics Research (STAR) Institute, University of Liège, Belgium. Corresponding author: Michael.DeBecker@uliege.be