1. Fast radio followup
Tim Staley
University of Southampton
TKP Meeting, December 2012
WWW: 4pisky.org , timstaley.co.uk
2. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
OUTLINE
5 MINUTE TOUR OF GRBS
SWIFT-AMI UPDATE
WHAT’S NEXT
3. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
OUTLINE
5 MINUTE TOUR OF GRBS
SWIFT-AMI UPDATE
WHAT’S NEXT
4. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
GRB PROGENITORS
L. Rezzolla et al 2011
5. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
GRBS: RELATIVISTIC FIREBALLS
M. Rees and P. Meszaros, 1992; W. Zhang and S.
Woosley, 2004.
6. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
SYNCHROTRON AFTERGLOW
Gou, Fox & Meszaros 2007
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SYNCHROTRON AFTERGLOW
Chandra and Frail, 2012.
8. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
TRANSITION: REVERSE SHOCK
Z. Lucas Uhm , Bing Zhang, 2012
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REVERSE SHOCK
Z. Lucas Uhm , Bing Zhang, 2012
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RS+FS COMBINED
GRB110205A (Cucchiara et. al 2011)
11. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
RS IN THE RADIO (‘FLARES’)
(S. Kulkarni et. al 1999)
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RS IN THE RADIO (‘FLARES’)
GRB051221A (Soderberg 2006)
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MANUAL RADIO FOLLOW UP OF
GRBS
Data from Chanda and Frail, 2012. ∼ 8GHz.
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PRIOR RADIO OBSERVATIONS
(Excluding Dave Green et al. 1995)
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WHY IS THIS INTERESTING?
Reverse shocks and radio flares (or lack thereof)
inform us on:
Magnetization of GRB jets,
Lorentz factor of ejecta,
Nature of ejecta (Baryonic vs Poynting flux
dominated).
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MEANWHILE...
‘Dark’ GRBs (Rol 2005; Zauderer 2012).
Re-injection events (Soderberg 2006;
Cucchiara 2011)
Unknown phenomena (Bannister 2012).
17. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
REBRIGHTENING
GRB110213A (Cucchiara 2011)
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OUTLINE
5 MINUTE TOUR OF GRBS
SWIFT-AMI UPDATE
WHAT’S NEXT
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AMI-LA (UK)
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AMI-LA (UK)
Arcminute Microkelvin Imager —
Large Array
15 GHz central frequency, 4.5 GHz
bandwidth
5.5 arcmin primary beam (FoV)
30 arcsec synthesised beam (PSF FWHM)
≈ 0.1mJy noise level, 1 hr image
21. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
THE SYSTEM
4 Pi Sky
SWIFT
BAT
GCN Comet
pysovo
AMI
Data
reduction
TraP
(Staley et al 2012)
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THE SYSTEM
4 Pi Sky
SWIFT
BAT
GCN Comet
pysovo
AMI
Data
reduction
TraP
BAT:
13-30
sec
GCN:
~2 sec
GCN ->
AMI:
~5 sec Slew:
4 min
(Staley et al 2012)
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FASTER RESPONSE TIMES
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FASTER RESPONSE TIMES
25. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
OUTLINE
5 MINUTE TOUR OF GRBS
SWIFT-AMI UPDATE
WHAT’S NEXT
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NETWORKING
[Transient] astronomy
currently follows the “second
grade soccer system” -
everyone chases the same ball.
27. 5 MINUTE TOUR OF GRBS SWIFT-AMI UPDATE WHAT’S NEXT
NETWORKING
4 Pi Sky
SWIFT
BAT
GCN Comet
pysovo
AMI
Data
reduction
TraP
LOFAR-
UK
FERMI
Southern
hemisphere
?
???
Comet
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OPTICAL FOLLOWUP: LT AND PT5M
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OPTICAL FOLLOWUP: LT AND PT5M
(LA PALMA)
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QUESTIONS
Classification
Teo, Adam, Gosia.
Prioritization and scheduling
Well framed as an ‘Intelligent Agents’ /
computer science project.
Collaborating with Southampton IA group
(Amr Hussein).
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SUMMARY
Swift-AMI ‘proof of concept’ has piqued
the interest from the GRB community.
‘Plumbing’ works fine.
Reduction process continues to evolve.
Follow-up prioritization and scheduling
system now in design phase.