Observations of diffuse radio emission in the Abell 773 galaxy cluster

Title: Observations of diffuse radio emission in the Abell 773 galaxy cluster
Creator: Sichone, Gift L
ThesisAdvisor: Bernardi, Gianni
ThesisAdvisor: Smirnov, Oleg
Subject: Galaxies -- Clusters -- Observations
Subject: Radio astronomy -- Observations
Subject: Astrophysics -- South Africa
Subject: Westerbork Radio Telescope
Subject: A773 galaxy cluster
Subject: Astronomy -- Observations
Subject: Radio sources (Astronomy
Date: 2020
Type: text
Type: Thesis
Type: Masters
Type: MSc
Identifier: http://hdl.handle.net/10962/144945
Identifier: vital:38394
Description: In this thesis, we present 18 and 21 cm observations of the A773 galaxy cluster observed with the Westerbork radio telescope. The final 18 and 21 cm images achieve a noise level of 0.018 mJy beam‾ 1 and 0.025 mJy beam-1 respectively. After subtracting the compact sources, the low resolution images show evidence of a radio halo at 18 cm, whereas its presence is more uncertain in the low resolution 21 cm images due the presence of residual sidelobes from bright sources. In the joint analysis of both frequencies, the radio halo has a 5.37 arcmin2 area with a 6.76 mJy flux density. Further observations and analysis are, however, required to fully characterize its properties.
Format: 72 pages, pdf
Publisher: Rhodes University, Faculty of Science, Physics and Electronics
Language: English
Rights: Sichone, Gift L

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