4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
Paper Review: Initial screening in progress
Home > Timetable > Session details > Contribution details
PDF | XML | iCal

New Calibration Sources for Very Long Baseline Interferometry at 1.6 GHz

Presented by Mr. Mekuanint Kifle HAILEMARIAM on 6 Jul 2016 from 16:10 to 18:00
Type: Poster Presentation
Track: Track D1 - Astrophysics
Board #: D1.280

Abstract

I present new 1.6 GHz VLBI observations of calibrator sources in the Southern Hemisphere. My sample contains 43 sources known to be good calibrators at 8.4 GHz. My goals were firstly to establish the suitability of the selected sources as calibrators for 1.6 GHz VLBI observations, and secondly to determine, based on the selected 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 at 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. Of the basis of my sample therefore, I can say that 88 percent of the good calibrators at 8.4 GHz are also safe to use at 1.6 GHz.

Award

Yes

Level

MSc.

Supervisor

Prof. Roy Booth, rbooth@ska.ac.za, University of Pretoria

Paper

Yes

Permission

No

Place

Location: Kramer Law building
Address: UCT Middle Campus Cape Town
Room:


Primary authors

More

Co-authors

More