Diffuse radio emission in the galaxy cluster Abell 754
| dc.contributor.author | Kale, Ruta | |
| dc.contributor.author | Dwarakanath, K S | |
| dc.date.accessioned | 2011-08-23T09:45:40Z | |
| dc.date.available | 2011-08-23T09:45:40Z | |
| dc.date.issued | 2009-09 | |
| dc.description | Restricted Access. Proceedings of the conference held 8-12 December 2008, at National Centre for Radio Astrophysics (NCRA), TIFR, Pune, India. Edited by D. J. Saikia, D. A. Green, Y. Gupta, and T. Venturi. San Francisco: Astronomical Society of the Pacific. | en |
| dc.description.abstract | We present a low frequency (<1.4GHz) study of the diffuse radio halo and relic emission in the galaxy cluster Abell 0754. Images at 150 MHz made using the Giant Metrewave Radio Telescope (GMRT) revealed 4 diffuse features; 3 of which are new. Images at 330 and 1363 MHz were created using archival data from the GMRT and the VLA respectively. These yield synchrotron spectral indices, (S ∝ v-∝ ), steeper than 2 for the new features. Adiabatic compression of fossil radio galaxy cocoon by shocks can lead to the formation of radio relics (Ensslin & Gopal-Krishna, 2001). In the framework of this model we find that the relic in A754 can be explained as a lurking cocoon of a radio galaxy; no shock compression is required to produce this emission. The implications of this result to the merger scenario in A754 are discussed. | en |
| dc.identifier.citation | ASP Conference Series, 2009, Vol.407, p237 | en |
| dc.identifier.uri | http://hdl.handle.net/2289/4122 | |
| dc.language.iso | en | en |
| dc.publisher | Astronomical Society of the Pacific | en |
| dc.relation.uri | http://adsabs.harvard.edu/abs/2009ASPC..407..237K | en |
| dc.rights | 2009 Astronomical Society of the Pacific. | en |
| dc.title | Diffuse radio emission in the galaxy cluster Abell 754 | en |
| dc.type | Article | en |