andrew faulkner university of manchester jodrell bank observatory
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Andrew Faulkner University of Manchester Jodrell Bank Observatory. Radio Net Partners & Mission. Support and enhance European radio astronomy. Radio Net has 20 partners: major radio astronomy facilities technology development laboratories Radio Net was awarded €12.4M - PowerPoint PPT PresentationTRANSCRIPT
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Andrew Faulkner
University of Manchester Jodrell Bank Observatory
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• RadioNet has 20 partners: – major radio astronomy facilities
– technology development laboratories
• RadioNet was awarded €12.4M
• Based on 25 years of cooperation in the European VLBI Network.
• Coordinated by Univ. of Manchester, UK
Support and enhance European radio astronomy
RadioRadioNetNet Partners & Mission Partners & Mission
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RadioRadioNetNet Objectives Objectives
• European access to world-class facilities
• Enhance facilities with an integrated R&D programme
• Greater collaboration in engineering, software and science
• Train & nurture next generation of astronomers and engineers
• A common and unified approach to user support
• Prepare for next generation of radio instruments:
• Strengthen European astronomy via close links with
ILIAS, OPTICON, EUROPLANET...
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Europe has some of the largest, most sophisticated radio telescopes on Earth.
These facilities are working together very closely as part of RadioNet
The TelescopesThe Telescopes
In 2004: TNA programme delivered 4200 hours of access; 40% of time went to new users.
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Radio Astronomy & Gravity WavesRadio Astronomy & Gravity Waves
Verification
Sources
Detection
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Radio Astronomy & Gravity WavesRadio Astronomy & Gravity Waves
Verification
Sources
Detection
Weisberg & Taylor (priv. comm)
Orbit shrinks 1cm every day
Confirmation of existence of gravitational waves
Hulse & Taylor (1974)
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Radio Astronomy & Gravity WavesRadio Astronomy & Gravity Waves
Verification
Sources
Detection
0 0.5 1 1.5 2
Mass A (MSun)
002.0000.1exp
obs
s
sTesting GR:
Kramer et al.(2004)
Pb=2.4 hrs, d/dt=17 deg/yr
vel ~ 0.1% c
M
ass
B (
MS
un)
0
0
.5
1
1
.5
2
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Radio Astronomy & Gravity WavesRadio Astronomy & Gravity Waves
Verification
Sources
Detection
2001 0.0003 – 0.25 2 – 1300 Kalogera et al. 2001
2002 0.001 – 0.03 4 – 140 Kim et al. 2002
2003 0.004 – 0.2 20 – 1000 Kalogera et al. 2003
Ligo I Ligo II ref.
Events per year (95% confidence)
Discovery of the Double Pulsar dramatically increasespredicted, observable coalescence rates:
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Radio Astronomy & Gravity WavesRadio Astronomy & Gravity Waves
Verification
Sources
Detection
LIGO Consortium, Kramer & Lyne (2005)
Look for Gravity Waves of known ephemeris from solitary Pulsars
LISA should observe GW from the Double Pulsar directly: ~2x10-4 Hz
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Radio Astronomy & Gravity WavesRadio Astronomy & Gravity Waves
Verification
Sources
Detection
B-mode signature of gravitational waves… ….. ‘smoking gun’ of inflation
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Radio Astronomy & Gravity WavesRadio Astronomy & Gravity Waves
Verification
Sources
Detection-15 -10 -5 0 5 10 Log10 (f/Hz)
Lo
g 10 (
Ωg(f
)h2)
-16
-
14
-1
2
-1
0
-8
-6
Millisecond pulsarsact as arms ofhuge detector
Complementary in frequency with LISA and LIGO/VIRGO
Look for global spatial pattern in pulsar timing residuals
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The Square Kilometre ArrayThe Square Kilometre Array
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• Next generation radio telescope• Frequency range 0.15 - 25 GHz• Collecting area of 106 m2
• >50x sensitivity & >105 survey speed of today's best instruments
• A ‘discovery’ instrument
• Internationally co-ordinated• Europe in SKADS is developing:
– technology for 0.15 - 2 GHz – large field-of-view– multiple beams
The Square Kilometre ArrayThe Square Kilometre Array
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Phased Arrays of receiversPhased Arrays of receivers
The revolution in radio telescopesThe revolution in radio telescopes
Aperture Arrays“electronic fish-eye lens”
Focal Plane Arrays“radio cameras”
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SKA Demonstrators SKA Demonstrators KAT & xNTDKAT & xNTD
Description•20 x 15m Dishes•0.7 – 1.75 GHz•Fitted with phased FPAs•FOV 50 deg2
•Baselines <10Km•Completion 2009
KAT/xNTD Aims•Science delivery•Technology demonstration
Hardware & software
•Test possible SKA site•Attract the full SKA
Collaboration•2 teams building similar systems:
• Australia xNTD• South Africa KAT
•Test bed for phased array technology
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SKA TimelineSKA Timeline
92 96 04 05 06 07 08 09 10 14 18 22
SKADSstart
SKADSreport
SKAconcept
WorkingGroup
Phase 2Build
50% SKA
Phase 3Build
100% SKA
SKAComplete
Now
Design & Build Demonstrators
KAT & xNTD1% SKA
Phase 1Build
10% SKA
‘10% SKA’Science
‘1% SKA’Science
……ISSCMoU
SiteSelection
ScienceCase pub.
Conceptexposition
‘Hydrogen Array’Wilkinson 1991
LegalEntity
Formed
2000
SKA systemdefined
SKADSMid-review
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The SKA will….The SKA will….
• Improve timing of pulsars 100 fold
• Discover all the pulsars in the Galaxy
• Find the elusive Black hole-Pulsar binary
• Detect MBH-MBH binary GWs
• Hydrogen survey of all Galaxies to z ~2
• Fundamental neutrino research
• Detect inter-galactic magnetic fields
• Very high precision galaxy power spectrum
• ‘Cradle of life’ + planetary formation & SETI
Plus….
etc. etc….
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SummarySummary
Radio Astronomy makes complementary GW observations
New technology will revolutionise Radio Astronomy
RadioRadioNetNet brings coherence to European RA teams
Opportunity for a joint FP7 funded science program?
ILIAS-GW and RadioRadioNet Net can make a great team in Fundamental Physics!
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Developing future technologyand software for radioastronomy.
3 JRAs: all running on 3 JRAs: all running on time and on budget.time and on budget.
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Networking ActivitiesNetworking Activities
• 8 NAs
• Range from management
to policy planning to
engineering workshops.
• In 2004 RadioNet funded
16 workshops on science,
engineering, interference,
operations and policy.
• Several hundred
astronomers and engineers
involved.
• 24 meetings planned for
next 18 months.
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KKL - 1992 KKLB+ - 1993
180
8
Note KKLB+ model accounts for fainter pulsars – so rate increased by
~3.2x
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The ‘Answer’*, again…
2001 0.0003 – 0.25 2 – 1300 KNST
2002 0.001 – 0.03 4 – 140 KKL
2003 0.004 – 0.2 20 – 1000 KKLB+
Ligo I Ligo II ref.
Events per year (95% confidence)
* Using model from KKL
0737 inc rate by 6-7 times
Daily!!1 per 13 years