Special purpose image display devices and techniques at the National Radio Astronomy Observatory

Arnold H. Rots

doi:10.1063/1.168352

Special purpose image display devices and techniques at the National Radio Astronomy Observatory

Computers in Physics ◽

10.1063/1.168352 ◽

1989 ◽

Vol 3 (6) ◽

pp. 41 ◽

Cited By ~ 2

Author(s):

Arnold H. Rots

Keyword(s):

Radio Astronomy ◽

Image Display ◽

Astronomy Observatory ◽

Display Devices ◽

Radio Astronomy Observatory

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

2013 Africon ◽

10.1109/afrcon.2013.6757829 ◽

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

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

Proceedings of the International Astronomical Union ◽

10.1017/s1743921312023666 ◽

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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