Current status of the transients pipeline, and its data interface

Transcript

1. THE LOFAR TRANSIENTS PIPELINE STATUS UPDATE Evert Rol University of

   Amsterdam Wednesday, 14 December, 2011

2. STATUS • Pipeline works! • It will find transients, attempt

   to classify them and notify people • New additions: • monitoring list • email alerts • Needs good test data sets Wednesday, 14 December, 2011

3. TRAnsients Pipeline Database Source detection Classification Raw data Transients TRansients

   Imaging Pipeline MAC/SAS World Wednesday, 14 December, 2011

4. TRANSIENTS IMAGING PIPELINE • Standard imaging procedure • Optimised for

   transients • Avoid flagging fast transients • re-arrange subbands • prepare final images for TRAP (header data) • Time slicing Wednesday, 14 December, 2011

5. TRANSIENTS PIPELINE Images False discovery rate Source detection Database storage

   Light curves Catalogs Source matching Transients Variable detection Classification “Manual” Automated Classification World Classified transient Monitoring list Monitoring list Wednesday, 14 December, 2011

6. CLASSIFICATION • Manual decision tree • Good to pick out

   those sources you care for • Based on simple statistics, catalog matches, duration • Automated classification • Development ongoing • Lack of training data set Wednesday, 14 December, 2011

7. MONITORING • Purpose: make sure the flux at a particular

   position is measured, even when there is no source detection (anymore). • Sources in the list: • Automatically monitor newly detected transients • Put your (X-ray, optical) transient in the list Wednesday, 14 December, 2011

8. ALERTS • Get notified by email • Just the most

   important information: transient, position, time • Set criteria which notifications you want (dependent on classification) Wednesday, 14 December, 2011

9. TRAP STATUS • A simple run, from source extraction to

   classification: twenty seconds • Finds transients, but reliability depends on images • In principle, light curves are available! • Email alerts will point you to the light curve Wednesday, 14 December, 2011

10. TRAP STATUS • Quality control • Spectral information • Automated

    classification • Polarisation information • MAC/SAS integration FUTURE WORK Wednesday, 14 December, 2011

11. RESULTS ( THOSE LIGHT CURVES ) HTTP://HEASTRO1.SCIENCE.UVA.NL:8888/ Wednesday, 14 December,

    2011

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21. TRANSIENT PIPELINE - SUMMARY • Basic implementation ready • Extensions

    up next: quality check; spectral information • Ready to automatically find the first new transients (MSSS) Wednesday, 14 December, 2011