Diffuse radio emission in the galaxy cluster Abell 754

Kale, Ruta; Dwarakanath, K.S.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4122

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DC Field	Value	Language
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.identifier.citation	ASP Conference Series, 2009, Vol.407, p237	en
dc.identifier.uri	http://hdl.handle.net/2289/4122	-
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.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
Appears in Collections:	Research Papers (A&A)

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