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New calibration sources for very long baseline interferometry at 1.6 GHz
Dissertation (MSc)--University of Pretoria, 2016.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2016
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| _version_ | 1867613517446643712 |
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| access_status_str | Open Access |
| author2 | Booth, Roy S. |
| author_browse | Booth, Roy S. |
| author_facet | Booth, Roy S. |
| collection | Thesis |
| dc_rights_str_mv | © 2016 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 2016. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/57244 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:24.530Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/57244 New calibration sources for very long baseline interferometry at 1.6 GHz Booth, Roy S. mekunet@gmail.com Bietenholz, Michael F. De Witt, Aletha Hailemariam, Mekuanint Kifle UCTD Dissertation (MSc)--University of Pretoria, 2016. I present new 1.6 GHz VLBI observations of sample of 43 radio sources in the Southern celestial Hemisphere. My goals were firstly to establish the suitability of the 43 sources as calibrators for 1.6 GHz VLBI observations, and secondly to determine, based on some selected sources from the sample, how the properties of the sources seen at 8.4 GHz are related to those seen at 1.6 GHz. I used seven telescopes; ASKAP, ATCA, Ceduna, Hobart, Mopra and Parkes from Australia, and HartRAO from South Africa. By evaluating the sources radial extents, flux density of the central components of the sources and their brightness, I classified the sources into very good, good, intermediate and bad calibrators. Among the 43 sources, I found that 38 sources fell into the good or very good calibrator classes. Among 35 of our sources, which are known to be good calibrators at 8.4 GHz, I found that 32 sources fell into the good or very good calibrator classes. Of the basis of my sample therefore, I can say that 91 percent of the good calibrators at 8.4 GHz are also safe to use at 1.6 GHz. tm2016 Physics MSc Unrestricted 2016-10-14T07:32:51Z 2016-10-14T07:32:51Z 2016-09-01 2016 Dissertation Hailemariam, MK 2016, New calibration sources for very long baseline interferometry at 1.6 GHz, MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/57244> S2016 http://hdl.handle.net/2263/57244 en © 2016 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD New calibration sources for very long baseline interferometry at 1.6 GHz |
| title | New calibration sources for very long baseline interferometry at 1.6 GHz |
| title_full | New calibration sources for very long baseline interferometry at 1.6 GHz |
| title_fullStr | New calibration sources for very long baseline interferometry at 1.6 GHz |
| title_full_unstemmed | New calibration sources for very long baseline interferometry at 1.6 GHz |
| title_short | New calibration sources for very long baseline interferometry at 1.6 GHz |
| title_sort | new calibration sources for very long baseline interferometry at 1 6 ghz |
| topic | UCTD |
| url | http://hdl.handle.net/2263/57244 |