Australian radio astronomy facilities
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Australian Radio Astronomy Facilities. Tasso Tzioumis Australia Telescope National Facility CSIRO Spectrum Management Coordinator http://www.atnf.csiro.au. Overview. Radio Astronomy Facilities in Australia – current capabilities The Future – SKA Radio Astronomy – an exciting science.

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Australian Radio Astronomy Facilities

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Australian radio astronomy facilities

Australian Radio Astronomy Facilities

Tasso Tzioumis

Australia Telescope National Facility CSIRO

Spectrum Management Coordinator

http://www.atnf.csiro.au


Overview

Overview

  • Radio Astronomy Facilities in Australia – current capabilities

  • The Future – SKA

  • Radio Astronomy – an exciting science

A. Tzioumis


Oz radio astronomy facilities

Oz Radio Astronomy Facilities

A. Tzioumis


Summary of oz ra facilities

Summary of Oz RA facilities

  • Australia Telescope National Facility

    http://www.atnf.csiro.au/

    - Parkes 64m; ATCA 6x22m; Mopra 22m

  • University of Tasmania

    http://www-ra.phys.utas.edu.au/observatories/

    - Hobart (26m); Ceduna (30m)

  • NASA’s Tidbinbilla antennas (70m & 34m)

  • Long Baseline Array (LBA)

    – VLBI with all antennas

  • University of Sydney

    - MOST cylindrical reflector @843 MHz

A. Tzioumis


Parkes telescope the dish

Parkes telescope – the “Dish”

  • 64m antenna, more than 40 years operation, National Facility

  • Receiver bands: 70,50,21,18,13,6,5,3,2,1cm (400 MHz – 22 GHz)

  • Multibeam (13 beams) at 21cm - Hydrogen gas mapping

  • Pulsars (~1/2 time)

    - most pulsars found (2/3)

  • Single dish operation

  • VLBI operations

  • NASA spacecraft tracking

  • Most sensitive

  • Most RFI susceptible

A. Tzioumis


Australia telescope compact array

Australia Telescope Compact Array

  • 6 x 22m antennas, near Narrabri, NSW on 6km rail-track

  • Synthesis array: increased sensitivity, better RFI immunity

  • Receiver bands: 20, 13, 6, 3, 1 cm (1 – 25 GHz)

  • 3mm system (80-110 GHz)

    June 2004

  • Planned 7mm system

  • National Facility

  • Oversubscribed ~x3

  • 40% international usage

  • Operation: 24/7

A. Tzioumis


Mopra

Mopra

  • ATNF 22m antenna – National Facility

  • 110 km from ATCA – short VLBI spacings

  • Rx 1-22 GHz bands – mainly VLBI

  • 80-115 GHz (3 mm)

  • Single dish & VLBI

  • VSOP support

A. Tzioumis


U tasmania hobart mt pleasant

U Tasmania – Hobart (Mt. Pleasant)

  • 26m ex-NASA antenna, X-Y mount

  • Rx 1-22 GHz range

  • Single dish – pulsars,

    spectra, students

  • VLBI – LBA

  • VLBI – Geodesy

  • Near Hobart - RFI

A. Tzioumis


U tasmania ceduna

U Tasmania – Ceduna

  • In South Australia

    – ex-telecom dish

  • 30m beam-waveguide

  • Rx 2-25 GHz

  • Single-dish - spectra, fluxes

  • VLBI

A. Tzioumis


Nasa tidbinbilla

NASA – Tidbinbilla

  • Deep Space Network (DSN) tracking complex

  • 70m and 34m antennas

  • S/X tracking Rx/Tx

  • 1.6 & 22 GHz astronomy Rx

  • Spectroscopy – most sensitive

    - mainly at 22 GHz H2O masers

  • VLBI – LBA & Geodesy

  • Limited access for astronomy

A. Tzioumis


Most skamp

MOST  SKAMP

  • 2 x (778m x 11.6) EW cylindrical reflectors

  • 843 MHz (4 MHz bw) – Imaging; surveys

  • SKA demonstrator upgrade – 300-1400 MHz

  • Multibeaming

  • Linear feeds

  • RFI mitigation

  • No extra protection

  • EIS cooperation

A. Tzioumis


Vlbi telescopes in oz

VLBI Telescopes in Oz

A. Tzioumis


The long baseline array lba

The Long Baseline Array – LBA

  • The ATNF, UTas & NASA antennas operate in Very Long Baseline Interferometry (VLBI) mode

  • Extremely high resolution (milliarcseconds)

  • Recorded data on tapes (S2 system - VCRs)

  • Correlated later at LBA correlator in Sydney

  • National Facility support

  • Operate at all bands 1-22 GHz

  • Possible optical fibre network links (eVLBI)

  • Less susceptible to RFI

A. Tzioumis


National facility operations

National Facility Operations

  • ATNF facilities (ATCA, Mopra, Parkes, LBA) – open to all

  • Proposals every 6 months (June 1 & Dec 1)

  • Statistics: 30% ATNF; 30% Oz Unis; 40% international

  • Web info at http://www.atnf.csiro.au/

  • Collaborations and help for new people.

  • Encourage to get in touch and propose!!

A. Tzioumis


Asia pacific telescope apt

Asia Pacific Telescope - APT

  • http://www.vsop.isas.ac.jp/apt/

  • VLBI coordination for Asia Pacific

  • All telescopes in region (at cm)

  • Used in supporting VSOP

  • Astronomy and Geodesy

  • Collaboration for new entrants

  • (Note: Asia Pacific Telecommunity (APT))

A. Tzioumis


Ra protection measures

RA Protection Measures

  • Licenses for main RA allocated bands for Parkes and ATCA

  • Details of allocations in Australian Spectrum Plan

  • Footnote AUS87 outlines all bands and telescopes for RAS in Australia.

  • Productivity Commission recommended “radio sensitive zones” around RA facilities

  • “Notification” and not protection zones

  • Experience with ACA, Defence and Industry

    - friendly and collaborative relations

A. Tzioumis


Future ra facilities ska

Future RA facilities - SKA

  • The Square Kilometre Array (SKA)

  • 1 km^2 of collecting area

    - extremely sensitive

  • Cost ~ US$1Billion; 12 country consortium

  • Frequencies: ~100 MHz - ~25 GHz

  • Technologically very challenging

  • RFI Mitigation built in

  • Currently in R&D phase

A. Tzioumis


Ska philosophy

SKA Philosophy

A. Tzioumis


Ska concepts

SKA – Concepts

Planar Array

Netherlands

“Arecibo” style reflector

China

Large Adaptive Reflector

(LAR)

Canada

Luneburg Lense

Australia

Allen Telescope Array

SETI Institute, US

A. Tzioumis


Possible ska configurations

Possible SKA Configurations

  • Dense “core” (50%) + antenna “clusters”

A. Tzioumis


Ska timelines

SKA timelines

  • Site proposals - Australia, China, South Africa, USA,…  2006 decision

  • Require: Modern infrastructure; “Radio quietness” ; local support

  • Australian advantage: “radio quietness”

    - WA – “best” site?

  • Concept decision 2008  demonstrator

  • 2009 Funding ; 2012 Construction start

  • 2015 Initial ops; 2020 Full ops

A. Tzioumis


Ska new technology demonstrators

SKA - New Technology Demonstrators

  • Funded to build technology demonstrators for many of the new ideas (>$10M)

  • CSIRO/Universities/Industry/Governments

  • 2 GHz BW at ATCA – by 2006

  • Eager to demonstrate at WA site

  • HIFAR – instrument for red-shifted H

    - 200-1000 MHz bands?

  • NTDs under vigorous discussion and review.

A. Tzioumis


Ska spectrum implications

SKA - Spectrum implications

  • “Radio Quiet Zone” at SKA site

  • Strong Protection of “core” site

  • More protection & coordination needed

  • Requires Government support at all levels

    - local, State, Federal

  • Support from other stakeholders – Defence?

  • Easier in Australia as all SKA in 1 country

A. Tzioumis


Summary

Summary

  • Australia has many world-class RA facilities with international impact

  • SKA is the RA future and could be built in Australia. “Radio quiet” zone desired.

  • RA & other services e.g. Defence, Comms industries can work together.

  • Radio Astronomy is an exciting science

    - many “weird and wonderful” objects

A. Tzioumis


Ra supernovae

RA – Supernovae

  • Supernova SN1987A

    – 22 GHz ATCA

    - May 2004

  • Large Magellanic cloud

    ~170000 light years away

  • Can be seen from South

    only

A. Tzioumis


Ra pulsars

RA – Pulsars

  • Neutron stars

  • Lighthouse effect

  • Very accurate clocks

  • 1st Binary pulsar

  • Parkes 2004

    - Periods of

    23 ms & 2.8s

    - 2.4 hr orbit

    - 2000 ly away

A. Tzioumis


Ra x ray binaries

RA – X-ray Binaries

A. Tzioumis


Ra active galactic nuclei

RA – Active Galactic Nuclei

  • ATCA image

  • 2356-612

  • Radio (red) on

    optical (blue)

  • Jets into ISM

  • Black-hole in core

  • Accretion disk

A. Tzioumis


Ra gravitational lenses

RA – Gravitational lenses

A. Tzioumis


Australian radio astronomy facilities

A. Tzioumis


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