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Observations of 3C 279 with the MAGIC telescope

Observations of 3C 279 with the MAGIC telescope. M. Teshima Max-Planck-Institute for Physics for the MAGIC collaboration at ICRC2007. 3C 279. EGRET brightest AGN (LBL) Gamma-ray flares in 1991 and 1996 Apparent luminosity ~ 10 48 erg/s First time variation △T ~ 6hr in 1996 flare

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Observations of 3C 279 with the MAGIC telescope

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  1. Observations of 3C 279 with the MAGIC telescope M. Teshima Max-Planck-Institute for Physics for the MAGIC collaboration at ICRC2007

  2. 3C 279 • EGRET brightest AGN (LBL) • Gamma-ray flares in 1991 and 1996 • Apparent luminosity ~ 1048erg/s • First time variation △T ~ 6hr in 1996 flare • Typical OVV (Optically violent variable) • Superluminal motion • γ~ 20~30, B ~ 0.3Gauss • z = 0.538, Ld ~ 3Gpc

  3. 3C 279 Flare in 1996

  4. SSC+EC / Hadronic MAGIC

  5. EBL Absorption Pair Creation; γHE＋γEBL e+ + e-

  6. MAGIC Telescope 85m New technologies to lower the threshold energy 17m diameter world largest cherenkov tel. 0.1°High resolution camera Analogue signal fiber transmission Current MAGIC-I Performance Fast rotation for GRB < 40secs Trigger threshold ~50GeV Sensitivity ~2% of Crab (50hrs) Angular resolution ~0.1 degrees Energy Resolution 20-30% MAGIC-II is under construction and will be completed in the fall of the next year Improve sensitivity by a factor of three Effectively lower the threshold energy

  7. Observation of 3C 279 with MAGIC • Observation • In the period of January - April 2006 • Observation of 9.5hrs • Zenith angle range is between 32 and 40 degrees • Analysis • 3 independent analysis have been done • Standard analysis and standard quality cut • Preliminary results will be presented here

  8. Sky-map and alpha ploton 23rd Feb 2007 80-220 GeV Preliminary Preliminary Preliminary E> 220 GeV Preliminary Preliminary

  9. 3C279 VHE gamma-ray light curve Intra-night Preliminary Preliminary Optical light curve

  10. Extragalactic VHE-sources (19) Big progress in AGN study from z ~ 0.2 to z = 0.538 New HBL 1ES1011+496 See the presentation by D. Mazin

  11. Summary • VHE gamma-ray emission from 3C279 was discovered by MAGIC • Second LBL after BL-Lacerteu • The VHE flare at 100GeV was observed on 23 February in 2006 • 6 sigma below 220GeV, and 5 sigma above 220GeV • The survey distance is extended up to z = 0.538 by MAGIC telescope • Big jump toward the deep universe! • Study of Energy spectrum • may deliver a stringent constraint on EBL and acceleration model

  12. Thanks

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