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
Andrew Faulkner
University of Manchester Jodrell Bank Observatory
• 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
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...
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.
Radio Astronomy & Gravity WavesRadio Astronomy & Gravity Waves
Verification
Sources
Detection
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)
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
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:
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
Radio Astronomy & Gravity WavesRadio Astronomy & Gravity Waves
Verification
Sources
Detection
B-mode signature of gravitational waves… ….. ‘smoking gun’ of inflation
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
The Square Kilometre ArrayThe Square Kilometre Array
• 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
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”
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
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
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….
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!
Developing future technologyand software for radioastronomy.
3 JRAs: all running on 3 JRAs: all running on time and on budget.time and on budget.
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.
KKL - 1992 KKLB+ - 1993
180
8
Note KKLB+ model accounts for fainter pulsars – so rate increased by
~3.2x
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