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Optical Follow-up for IceCube

Optical Follow-up for IceCube. Marek Kowalski Humboldt University Berlin. The IceCube Neutrino Telescope. IceCube Fact Sheet. IceTop. Instrumented Volumen – 1 km 3 Angular resolution < 1.0° Energy threshold – 100 GeV Completion – 2011 50% completion – 2008.

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Optical Follow-up for IceCube

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  1. Optical Follow-up for IceCube Marek Kowalski Humboldt University Berlin

  2. The IceCube Neutrino Telescope IceCube Fact Sheet IceTop • Instrumented Volumen – 1 km3 • Angular resolution < 1.0° • Energy threshold – 100 GeV • Completion – 2011 • 50% completion – 2008 AMANDA Construction: 1997 - 2000 IceCube Construction: 2005 - 2011

  3. Optical follow-up optical SN/GRB detection day 1-10 day 0 IceCube Neutrino-Trigger Network of optical telescopes IceCube

  4. Science Motivation Search for transient sources: • Supernova (id: rising lightcurve) • Gamma-Ray Burst (id: afterglow) • Gamma-Dark Bursts (id: orphan afterglows) MK, A. Mohr, Astropart (2007)

  5. Example: Supernovae with mildly relativistic jets Motivation: Gamma-Ray Bursts, polarisation measurments Gravitational Collapse of a massive, rotating star (>25 M): Hard to prove, since jets are absorbed. Neutrino-prediction: 30 Neutrino-Events in 10 s in IceCube for a 10 Mpc distant Supernova. Ando & Beacom, PRL (2005); Razzaque, Meszaros & Waxman, PRL (2005). Simulation: MacFadyen (2000)

  6. Detecting Supernovae

  7. Supernova sensitivity Ando & Beacom PRL2005 Sensitivity can be doubled by follow-up! MK, A. Mohr, Astropart. Phys (2007)

  8. Optical follow-up with ROTSE planedfor April/Mai 2008 (=50% IceCube) ROTSE III • 4 Telescope (USA, Turkey, Australia, Nambia) • Diameter 0.45 m • Median response time: 7 s • FoV: 1.85 x 1.85 • Up to 50 IceCube ToO-Trigger/Year

  9. IceCube80% Error Circle Optical follow-up with ROTSE planedfor April/Mai 2008 (=50% IceCube) ROTSE III • 4 Telescope (USA, Turkey, Australia, Nambia) • Diameter 0.45 m • Median response time: 7 s • FoV: 1.85 x 1.85 • Up to 50 IceCube ToO-Trigger/Year M31 1.85o

  10. A network of robotic telescopes • ROTSE III 4 x 0.45 m FoV: 2 x 2 RoboNet Stella Monet PTF

  11. Conclusion • There is an opportunity for robotic telescopes such as STELLA to work with IceCube and other neutrino telescopes (ANTARES, KM3NET). • For each telescope, only a small amount of time needed.

  12. Error circle: ~60% of IC40 ~80% of IC80 1.85o

  13. Analysing a ROTSE image • 5052 objects identified • Compare to USNO2.0 reference star catalog (match to within pixel) • 83 objects not in the catalog • Of the 83 objects none shows variations larger than 1 mag GRB/SN would be identified as variable object on time-scales of minutes to days GRB afterglow, 500 s late

  14. Summary • Monitoring module for short time scale to complement the run wise monitoring. • Doublet trigger schema exists but not yet optimized. • ROTSE is ready to receive IC triggers (<50/yr); the goal is to have the online software ready for IC40.

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