This document summarizes recent work on fast radio follow-up of transient sources and multi-wavelength classification. It discusses three key areas: 1) examples of fast radio follow-up of gamma-ray bursts and stellar flares, 2) using radio and optical measurements to classify transients, and 3) the need to automate "transient triage" to efficiently prioritize follow-up observations across different facilities. The presenter argues that distributing information about new transients via VOEvents can help the community automate real-time classification and prioritization of targets.

1. From gamma-ray to radio
Multi-wavelength follow-up within the
first five minutes
Tim Staley,
Rob Fender, Gemma Anderson, et al
RAS LT2 Meeting, Burlington House, Nov 2014
WWW: 4pisky.org , timstaley.co.uk

2. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Aims of this talk
Highlight recent work:
Fast radio follow-up
Transient classification
Talk about transient screening and
prioritisation, and how to start
implementing it

3. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Outline
Fast Radio Follow-up
Multi-λ classification
Automating ‘transient triage’

4. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
ALARRM
AMI-LA Rapid Response Mode
Staley 2013, http://ukads.nottingham.ac.uk/abs/2013MNRAS.428.3114S

5. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
GRB140327A
Anderson 2014, http://adsabs.harvard.edu/abs/2014MNRAS.440.2059A
van der Horst 2014, http://adsabs.harvard.edu/abs/2014MNRAS.444.3151V

6. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
DG CVn M-dwarf superflare
Fender 2014, http://adsabs.harvard.edu/abs/2014arXiv1410.1545F
Osten et al (in prep)

7. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Outline
Fast Radio Follow-up
Multi-λ classification
Automating ‘transient triage’

8. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Radio timescales
Weak classification based on rise rate?
Pietka 2014, http://adsabs.harvard.edu/abs/2014arXiv1411.1067P

9. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Radio-optical flux ratio
Stewart, Munoz-Darias (in prep)

10. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Outline
Fast Radio Follow-up
Multi-λ classification
Automating ‘transient triage’

11. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Transient triage
Want to make optimal use of both
small and large facilities
Perform crude classification and target
prioritisation with small facilities first
Has to be fast
Has to be automated

12. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Automating the spread of
information
VOEvent provides a decentralised,
machine-readable publication model.
e.g. Swinbank 2013, http://adsabs.harvard.edu/abs/2013MNRAS.428.3114S

13. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Let’s make this work
We can provide the tools and
infrastructure
Running an open VOEvent server at
voevent.4pisky.org
NASA-GCN
DESAlerts (soon)
OGLE / GAIA (possibly)
A minimum working example to get
you started:
github.com/timstaley/fourpiskytools

14. Fast Radio Follow-up Multi-λ classification Automating ‘transient triage’
Summary
There are rapidly evolving radio-band
transients, too
Radio information could be a powerful
aid to classification
We can help you get started with
VOEvents
More info: 4pisky.org