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Transients Classification Tools

Ab44292d7d6f032baf342a98230a6654?s=47 transientskp
December 04, 2012

Transients Classification Tools

Gosia Pietka

Ab44292d7d6f032baf342a98230a6654?s=128

transientskp

December 04, 2012
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Transcript

  1. Transients Classification Tools TKP meeting 4 Dec 2012, Amsterdam Gosia

    Pietka, Rob Fender, Adam Stewart, Teo Muñoz-Darias
  2. TraP process flow   Data Imaging Source Finder Initial classification

    based on the radio information Classification based on radio + optical data No  further   observa.ons   Fast ToO Slow ToO Slow Fast Not exciting Request for more observations Optical, X-ray, radio follow up
  3. Van der Laan Synchrotron Bubble Model −  ℎ∝    

    ≫1   ≪1    ℎ    ℎ   ≈1  
  4. Flux as a function of time  

  5.   Phase 1: Slope

  6.   Phase 1: Slope

  7. Phase 1: Slope (Pietka & Fender in prep.) Peak  radio

     luminosity  [erg/s]  vs  rising  rate  of  the  lightcurve   Slow Fast
  8.     Probability  distribu:on  of  source  classifica:on  a<er  the  first

     measurement            SN            GRB   Blazar   XRB   Flare   Stars   QSO   Binary   AGN   TDE   Nova     Phase 1: Slope Slow   Fast  
  9.   Phase 2: Slope + Rise Time

  10. Phase 2: Slope + Rise Time (Pietka & Fender in

    prep.) Fast Fast Slow Slow  
  11.   Phase 2: Slope + Rise Time Fast Fast

  12.     Phase 2: Slope + Rise Time

  13.   Phase 3: Slope + Rise Time + Decline time

  14. Flux vs time for different types of objects Flux (Jy)

    Time(day) XRB     SN     Blazar  
  15. Flux density at different frequencies  

  16. TraP process flow   Data Imaging Source Finder Initial classification

    based on the radio information Classification based on radio + optical data No  further   observa.ons   Fast ToO Slow ToO Optical, X-ray, radio follow up Slow Fast Not exciting Request for more observations
  17. •  RADIO/OPTICAL IDENTIFICATION of point sources (Stewart, Muñoz-Darias & Fender

    in prep.) "   Diagrams using Optical/IR/Radio fluxes and colours o  The simpler the better o  Quick identification of the nature of the transients: follow up? "  (simultaneous) Radio (few GHz), Optical (V/R bands): ★  Supernovae, Gamma Ray Burst ★  X-ray binaries, CVs, different flavours of pulsars ★  Active stars ( many thanks to Manuel Güdel) ★  QSOs - Radio (e.g. PKS) and optically selected (SLOAN)
  18. Colour magnitude diagram

  19. Conclusion     •  Radio  informa.on:   ü Slope   ü Rise

     .me   ü Decline  .me   •  Radio  +  op.cal       •  Extrapola.on  of  the  results  to  the  lower  frequencies   data,  based  on  the  van  der  Laan  model  
  20. Conclusion