scholarly journals Pulsar Observations at the Ghana Radio Astronomy Observatory

2017 ◽  
Vol 13 (S337) ◽  
pp. 410-411
Author(s):  
T. W. Scragg ◽  
B. W. Stappers ◽  
R. P. Breton ◽  
J. N. Smith ◽  
D. Adomako ◽  
...  
Keyword(s):  
Radio Telescope ◽  
Radio Astronomy ◽  
Astronomy Observatory ◽  
Earth Station ◽  
Radio Astronomy Observatory ◽  
Pulsar Timing ◽  
New Radio ◽  
Timing System

AbstractIn August 2017 a new radio telescope, the Ghana Radio Astronomy Observatory (GRAO), was officially inaugurated at Kuntunse, Ghana. The GRAO is a former satellite Earth station and now the first operational station in the African VLBI Network (AVN). The Jodrell Bank Centre for Astrophysics (JBCA), supported by the UK’s STFC/Newton Fund, has developed a new pulsar timing system (Hebe) for the GRAO. We present some aspects of the design of Hebe and an outline of the first pulsar detection at GRAO.

scholarly journals Source Flux Densities at 153 MHz

1967 ◽  
Vol 20 (6) ◽  
pp. 697 ◽  
Author(s):  
PA Hamilton ◽  
RF Haynes
Keyword(s):  
Radio Telescope ◽  
Radio Astronomy ◽  
Astronomy Observatory ◽  
Density Measurements ◽  
Radio Astronomy Observatory ◽  
General Continuum

This paper gives fiux density measurements of 312 sources at 153 MHz obtained from a general continuum survey made with the 210 ft radio telescope of the Australian National Radio Astronomy Observatory, Parkes, N.S.W. The beamwidth of the telescope at this frequency is 2� 18�. Some discussion of results for spectra is given and a comparison is made with other measurements of the same sources.

scholarly journals Observations of Some Radio Sources Previously Identified with Clusters of Galaxies

1967 ◽  
Vol 20 (6) ◽  
pp. 725
Author(s):  
HM Tovmassian ◽  
IG Moiseev
Keyword(s):  
Radio Telescope ◽  
Radio Astronomy ◽  
Astronomical Observatory ◽  
Radio Sources ◽  
Clusters Of Galaxies ◽  
Astronomy Observatory ◽  
Radio Astronomy Observatory ◽  
The University ◽  
East West

The positions of 33 radio sources previously identified with distant clusters of galaxies were remeasured more accurately to check the identifications. Observations were made at 1410 and 2650 MHz with the 210 ft radio telescope of the Australian National Radio Astronomy Observatory at Parkes, and at 408 MHz with the east-west arm of the Mills Cross at the Molonglo Radio Astronomical Observatory of the University of Sydney. It was found that 21 sources are situated within 5 min of arc of the centres of the corresponding clusters.

scholarly journals A Low Resolution Hydrogen-line Survey of the Magellanic System. I. Observations and Digital Reduction Procedures

1963 ◽  
Vol 16 (4) ◽  
pp. 552 ◽  
Author(s):  
JV Hindman ◽  
RX McGee ◽  
AWL Carter ◽  
ECJ Holmes ◽  
M Beard
Keyword(s):  
Radio Telescope ◽  
Radio Astronomy ◽  
Neutral Hydrogen ◽  
Recording System ◽  
Digital Recording ◽  
Astronomy Observatory ◽  
Hydrogen Line ◽  
Radio Astronomy Observatory ◽  
Line Survey ◽  
Magellanic System

A survey of neutral hydrogen in the Clouds of Magellan has been made using a digital recording system in conjunction with a multichannel receiver and a 21 ft aerial. The system has been developed for use with the 210 ft radio telescope of the Australian National Radio Astronomy Observatory at Parkes, N.S.W.

scholarly journals Observations of SiO J=2–1 and J=3–2 masers towards evolved stars with the TRAO 14 m telescope

2007 ◽  
Vol 3 (S242) ◽  
pp. 314-315
Author(s):  
Se-Hyung Cho
Keyword(s):  
Radio Telescope ◽  
Radio Astronomy ◽  
Astronomy Observatory ◽  
Maser Emission ◽  
Radio Astronomy Observatory ◽  
Evolved Stars ◽  
Mira Variable

AbstractWe present the results of survey and time-monitoring observations of SiO J=2–1 and J=3–2 masers towards evolved stars with the 14 m radio telescope at Taeduk Radio Astronomy Observatory (TRAO) from 1995 February to 2001 February. The first detection of SiO v=3, J=2–1 maser emission toward S-type Mira variable χ Cyg is also presented.

scholarly journals Radio Emission Of The Nuclei Of Barred Spiral Galaxies

1966 ◽  
Vol 19 (6) ◽  
pp. 883 ◽  
Keyword(s):  
Radio Emission ◽  
Radio Telescope ◽  
Radio Astronomy ◽  
Spiral Galaxies ◽  
Astronomy Observatory ◽  
Radio Observations ◽  
Barred Galaxies ◽  
Radio Astronomy Observatory ◽  
Barred Spiral Galaxies

The results of radio observations of 98 barred galaxies at 11, 21, and 75 cm are presented. The observations were carried out with the 210 ft radio telescope of the Australian National Radio Astronomy Observatory and with the Mills Cross of the Sydney Uni

scholarly journals Design, environmental and sustainability constraints of new African observatories: The example of the Mozambique Radio Astronomy Observatory

2013 Africon ◽  
2013 ◽  
Author(s):  
Domingos Barbosa ◽  
Miguel Bergano ◽  
Valerio A. R. M. Ribeiro ◽  
Anita Loots ◽  
Venkatasubramani L. Thondikulam ◽  
...  
Keyword(s):  
Radio Astronomy ◽  
Astronomy Observatory ◽  
Radio Astronomy Observatory

scholarly journals On the peculiarities in the spin-down of isolated radio pulsars

2012 ◽  
Vol 8 (S291) ◽  
pp. 208-208
Author(s):  
Augustine Chukwude
Keyword(s):  
Radio Astronomy ◽  
Time Resolution ◽  
Local Phase ◽  
Astronomy Observatory ◽  
Radio Pulsars ◽  
Short Term ◽  
Radio Astronomy Observatory ◽  
Long Term Changes ◽  
Timing Data

AbstractWe investigate the spin-down behaviour of a sample of 25 radio pulsars on decadal timescales (~ 18 years) using a continuous timing data obtained over a period of at Hartebeesthoek Radio Astronomy Observatory (HartRAO). Particular attention is placed on achieving a better time resolution of both the short-term and long-term changes in pulsar spin-down using local phase-coherent measurements of the spin-down rates (). We demonstrate that the spin-down of radio pulsars is generally complicated by a superposition of processes that may or may not be related. Specifically, our results show that (i) for 7 pulsars, the observed spin-down variation is largely stochastic, characterized by random and sustained jumps in of varying amplitudes, (ii) for 9 objects, the spin-down evolution shows dominant monotonic variations in superimposed on short-term stochastic jumps in the parameter, and (iii) for the remaining 9 pulsars, the long-term spin-down evolution is non-monotonic, dominated by some systematic excursion in the measured spin-down rates.

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