The Transient Sky Eran Ofek CALTECH Collaboratos Shri

The Transient Sky Eran Ofek CALTECH Collaboratos: Shri Kulkarni Arne Rau Mansi Kasliwal Brian Cameron

Talk Layout Transients along the EM Further motivation – The future Ongoing searches Individual transients GRB 060505 Radio transients M 85 OT 2006 -1 SDSS-SN 15207 SN 2006 gy Ofek et al. (2006) Levinson, Ofek et al. (2002) Gal-Yam, Ofek et al. (2006) Kulkarni, Ofek et al. (2006) Rau et al. (2006) Ofek et al. in prep Ofek et al. (2006)

Transients along the EM Gamma rays Classical long-GRBs Low-energy long-GRBs Short GRBs SGRs Ofek et al. (2006) Extragalactic SGRs Ofek (2006); Ofek et al. (2006)

Transients along the EM Radio Searching for radio transients Levinson, Ofek et al. (2002) Gal-Yam, Ofek et al. (2006)

Motivation Pecuiler members of known families Test models Standard candles systematic New rare kind of transients

Summary of physical motivation

Motivation - LSST

About LSST 8. 4 m mirror 6. 5 m effective diameter

About LSST

LSST details 3 Gpixel camera Field of view = 9. 65 sq. deg 6 filters: ugriz. Y 15 s exposures, 2 s readout, 5 sec slow ~5000 sq. deg. per night First light: 2012, Cerro Pachon

LSST products 15 TB nightly 7 PB yearly Computing power is not available today…

LSST science products Single image: ~24 mag Astrometry Static sky Absolute: 50 mas Relative: 10 mas u 24. 3 g 26. 5 r 27. 8 i 26. 6 z 25. 5 Y 24. 7 ~1 min transients alert Sky for everyone - No proprietary time!

Back to the present Ongoing searches Nearby clusters Fornax, Perseus Palomar 5 m MPG 2. 2 m LCO 2. 5 m SDSS-II Follow up cadance improving Palomar robotic 60” Nearby galaxy survey Palomar robotic 60” Palomar 48” (10 sg. deg)

Individual transients

M 85 Optical Transient 2006 -1 Kulkarni, Ofek et al. (2006), Rau et al. in prep. , Ofek et al. in prep

M 85 Optical Transient 2006 -1 Green to red color evolution 60 day platue Peak abs. mag R~-13 Expansion velocity ~300 km/s

M 85 Optical Transient 2006 -1

M 85 Optical Transient 2006 -1

M 85 Optical Transient 2006 -1

M 85 Optical Transient 2006 -1 Late time Spitzer observation

M 85 Optical Transient 2006 -1 Comparison with other types of transients

M 85 Optical Transient 2006 -1 Searching for his brothers

SDSS-15207

SN 2006 gy FWHM ~0. ” 1 SN Nucleus Dust lane Ofek et al. (2006)

SN 2006 gy Ofek et al. (2006)

SN 2006 gy Ofek et al. (2006)

SN 2006 gy Ofek et al. (2006)

Summary LSST era is almost here ~2012 First year – listening mode: Out of 6 targets: The “known”: 1 LBV(? ), 2 Dwarf novae The “known unknown”: The “unknown” M 85 OT 2006 -1 SN 2006 gy SDSS-15207

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