Particle acceleration; Galactic cosmic rays; Radio astrophysics; Massive stars; Shock physics; High energy astrophysics
Abstract :
[en] 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.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
De Becker, Michaël ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
del Palacio, S.
Benaglia, P.
Tej, A.
Marcote, B.
Romero, G. E.
Bosch-Ramon, V.
Ishwara-Chandra, C. H.
Language :
English
Title :
Investigating the role of pre-supernova massive stars in the acceleration of galactic cosmic rays
Publication date :
In press
Event name :
Third BINA workshop: Scientific potential of the Indo-Belgian cooperation
Event organizer :
BINA
Event place :
Bhimtal, India
Event date :
21-24 March 2023
Audience :
International
Journal title :
Bulletin de la Société Royale des Sciences de Liège
ISSN :
0037-9565
eISSN :
1783-5720
Publisher :
Société Royale des Sciences de Liege, Liège, Belgium
