Study of Wolf-Rayet Stars Using uGMRT
Artikel i vetenskaplig tidskrift, 2024

In recent years, systems involving massive stars with large wind kinetic power have been considered as promising sites for investigating relativistic particle acceleration in low radio frequencies. With this aim, we observed two Wolf-Rayet systems, WR 114 and WR 142, using upgraded Giant Meterwave Radio Telescope observations in Band 4 (550–950 MHz) and Band 5 (1050–1450 MHz). None of the targets was detected at these frequencies. Based on the non-detection, we report 3σ upper limits to the radio flux densities at 735 and 1260 MHz (123 and 66 µJy for WR 114, and 111 and 96 µJy for WR 142, respectively). Plausible scenarios to interpret this non-detection are presented.

stars: Wolf-Rayet

WR 142

stars: WR 114

radio continuum: ISM

non-thermal

radiation mechanisms: thermal

Författare

Anindya Saha

Indian Institute of Space Science and Technology

Anandmayee Tej

Indian Institute of Space Science and Technology

Santiago Del Palacio

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik

M. De Becker

Universite de Liège

P. Benaglia

Consejo Nacional de Investigaciones Cientificas y Tecnicas

C. H. Ishwara-Chandra

National Centre for Radio Astrophysics India

Prachi Prajapati

Physical Research Laboratory

Bulletin de la Societe Royale des Sciences de Liege

17835720 (eISSN)

Vol. 93 2 491-503

Ämneskategorier

Astronomi, astrofysik och kosmologi

DOI

10.25518/0037-9565.11764

Mer information

Senast uppdaterat

2024-08-06