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Radio Astronomy and MeerKAT In 5 minutes: A Radio Telescope Run by Neilen Marais

Pycon ZA
October 07, 2016

Radio Astronomy and MeerKAT In 5 minutes: A Radio Telescope Run by Neilen Marais

Lightning Talk

Pycon ZA

October 07, 2016
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  1. `

  2. • Sensitivity • ΔS min : minimum detectable flux density

    • k: 1.38x10-23 J/K • A e : effective area of aperture [m2] • Ks: sensitivity constant (order unity) • Δυ: bandwidth [Hz]; t, integration time; n, number of averages taken. proportional to T SYS /A e • Resolution • Circular dish • D e : diameter [m] • λ: wavelength [m] • Δθ: resolution [rad] Bigger is better!
  3. Interferometry • Back in the UK... 1964 • Martin Ryle

    – Aperture Synthesis with the One Mile Telescope • Increases resolution by using spacing between antennas... • Where D is the spacing between antennas
  4. A “normal” Pulsar A little faster... Faster Still... And the

    record holder... What we don’t want...