| Name: | Swarna Chatterjee |
| Affiliation: | IIT Indore |
| Conference ID : | ASI2024_973 |
| Title : | The enigmatic radio relic in the low mass cluster Abell 2108 |
| Authors : | Swarna Chatterjee1, Majidul Rahman2, Abhirup Datta1, Ruta Kale3, and Surajit Paul4 |
| Authors Affiliation: | 1 Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
2 Institute of Astronomy, National Tsing Hua University, Hsinchu 300044, Taiwan, R.O.C
3 National Centre for Radio Astrophysics, Pune-411007, India
4 Manipal Centre for Natural Sciences, Centre of Excellence, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
|
| Mode of Presentation: | Poster |
| Abstract Category : | Galaxies and Cosmology |
| Abstract : | The presence of cluster-scale diffuse radio emissions has unveiled the intriguing interplay between magnetic fields and high-energy electrons within the intracluster medium. Among these emissions, the Mpc-scale radio relics, located at the outer edges of galaxy clusters, stand out as particularly intriguing due to their varied morphologies and complex origins. Previous studies were mostly biased toward high-mass clusters ( M ≥ 5 ✕ 1014 ), primarily due to limitations in both theory and instrumentation. However, recent advancements in radio telescope sensitivity have broadened the scope of relic discoveries, bringing more relics in lower mass clusters into light. Understanding relic properties across a wide mass range is important as the environment and the effectiveness of various particle acceleration engines may largely differ depending on cluster mass and merging history.
Abell 2108 (A2108) was observed in the uGMRT LOw-MAss Galaxy Cluster Survey (GLOMACS), which aims to explore diffuse radio emissions in underexplored low-mass galaxy clusters. Using uGMRT band-3, we discovered a new filamentary radio relic in A2108, in addition to the previously detected southwestern relic. This establishes A2108 as one of the rare low-mass clusters hosting double relics. These relics exhibit distinctive size and morphology differences. In this conference, I will discuss about the enigmatic radio relic in A2108, elucidating its unique properties and the factors influencing its formation.
|
