Study of Wolf-Rayet stars using uGMRT

Saha, Anindya; Tej, A.; del Palacio, S.; De Becker, Michaël; Benaglia, P.; Ishwara-Chandra, C.H.; Prajapati, P.

doi:10.25518/0037-9565.11764

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Study of Wolf-Rayet stars using uGMRT

Saha, Anindya; Tej, A.; del Palacio, S. et al.

2024 • In Bulletin de la Société Royale des Sciences de Liège, 93 (2), p. 491-503

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https://hdl.handle.net/2268/316352

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10.25518/0037-9565.11764

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Keywords :

Massive stars; Particle acceleration; Radio astrophysics; Wolf-Rayet stars

Abstract :

[en] 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, WR114 and WR142, 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 3$\sigma$ upper limits to the radio flux densities at 735 and 1260 MHz (123 and 66 $\mu$Jy for WR114, and 111 and 96 $\mu$Jy for WR142, respectively). The plausible scenarios to interpret this non-detection are presented.

Research Center/Unit :

STAR - Space sciences, Technologies and Astrophysics Research - ULiège

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Saha, Anindya

Tej, A.

del Palacio, S.

De Becker, Michaël ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Sciences spatiales ; Université de Liège - ULiège > Unités de recherche interfacultaires > Space sciences, Technologies and Astrophysics Research (STAR) ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Multi-wavelength Extragalactic and Galactic Astrophysics (MEGA)

Benaglia, P.

Ishwara-Chandra, C.H.

Prajapati, P.

Language :

English

Title :

Study of Wolf-Rayet stars using uGMRT

Publication date :

11 June 2024

Event name :

Third BINA workshop: Scientific potential of the Indo-Belgian cooperation

Event place :

Bhimtal, India

Event date :

22-24 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

Volume :

Issue :

Pages :

491-503

Peer reviewed :

Peer reviewed

Additional URL :

https://popups.uliege.be/0037-9565/index.php?id=11764

Available on ORBi :

since 17 April 2024

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