Optical Follow-up for IceCubeOptical Follow-up for IceCube

Marek KowalskiMarek Kowalski

Humboldt University BerlinHumboldt University Berlin

IceCube Fact Sheet

AMANDA Construction: 1997 - 2000IceCube Construction: 2005 - 2011

IceTop

• Instrumented Volumen – 1 km3

• Angular resolution < 1.0°• Energy threshold – 100 GeV• Completion – 2011• 50% completion – 2008

The IceCube Neutrino Telescope

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

IceCube

Network of opticaltelescopes

day 1-10

opticalSN/GRBdetection

Optical follow-up

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

IceCube Neutrino-Trigger

day 0

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)

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Example: Supernovae with mildly relativistic jets

Simulation: MacFadyen (2000)

Gravitational Collapse of a massive, rotating star (>25 M):

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Motivation: Gamma-Ray Bursts, polarisation measurments

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).

Detecting Supernovae

MK, A. Mohr, Astropart. Phys (2007)

Supernova sensitivity

Ando & Beacom PRL2005

Sensitivity can be doubled by follow-up!

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

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

Optical follow-up with ROTSE planed for April/Mai 2008 (=50% IceCube)

QuickTime™ and aYUV420 codec decompressor

are needed to see this picture.

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

Optical follow-up with ROTSE planed for April/Mai 2008 (=50% IceCube)

IceCube 80% Error Circle

M31

1.85o

A network of robotic telescopes

• ROTSE III4 x 0.45 mFoV: 2 x 2

RoboNet StellaMonetPTF

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.

1.85o

Error circle:~60% of IC40~80% of IC80

Analysing a ROTSE image

• 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

• 5052 objects identified

• Compare to USNO2.0 reference star catalog (match to within pixel)

• 83 objects not in the catalog

GRB afterglow, 500 s late

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.