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Observations of extragalactic sources with the MAGIC telescope

Observations of extragalactic sources with the MAGIC telescope. Manel Errando IFAE (Barcelona) for the MAGIC collaboration. Summary. Observation strategy Results from observations 1ES 1959+650 1ES 1218+30.4 Mkn 501 PG 1553+113 Mkn 421 Future plans: MAGIC II Conclusions.

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Observations of extragalactic sources with the MAGIC telescope

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  1. Observations of extragalactic sources with the MAGIC telescope Manel Errando IFAE (Barcelona) for the MAGIC collaboration

  2. Summary • Observation strategy • Results from observations • 1ES 1959+650 • 1ES 1218+30.4 • Mkn 501 • PG 1553+113 • Mkn 421 • Future plans: MAGIC II • Conclusions

  3. Main observation programs • Systematic observations of candidate HBLs • Observation of low redshift FSRQs and LBLs • Target of opportunity and multiwavelength observations of AGN • Monitoring of bright TeV blazars • M87 • Follow-up of Gamma Ray Bursts PG 1553+113 1ES 2344+514 PKS 2155-304 2E 1415+255 1ES 1426+428 1ES 1011+496 0317+183 0323+022 0414+009 0806+524 1ES 0120+340 1722+119

  4. Systematic observations of candidate HBLs Observation of low redshift FSRQs and LBLs Target of opportunity and multiwavelength observations of AGN Monitoring of bright TeV blazars M87 Follow-up of Gamma Ray Bursts 0430+053 (3C 120) 0736+017 1219+285 (W Com) 1253-055 (3C 279) 0851+202 (OJ 287) 0959+658 1721+343 (4C 34.47) Main observation programs

  5. Main observation programs • Systematic observations of candidate HBLs • Observation of low redshift FSRQs and LBLs • Target of opportunity and multiwavelength observations of AGN • Monitoring of bright TeV blazars • M87 • Follow-up of Gamma Ray Bursts

  6. Main observation programs • Systematic observations of candidate HBLs • Observation of low redshift FSRQs and LBLs • Target of opportunity and multiwavelength observations of AGN • Monitoring of bright TeV blazars • M87 • Follow-up of Gamma Ray Bursts Mrk 501 Mrk 421 1ES 1959+650

  7. Main observation programs • Systematic observations of candidate HBLs • Observation of low redshift FSRQs and LBLs • Target of opportunity and multiwavelength observations of AGN • Monitoring of bright TeV blazars • M87 • Follow-up of Gamma Ray Bursts

  8. Main observation programs • Systematic observations of candidate HBLs • Observation of low redshift FSRQs and LBLs • Target of opportunity and multiwavelength observations of AGN • Monitoring of bright TeV blazars • M87 • Follow-up of Gamma Ray Bursts See next talk by Markus Garczarczyk

  9. Observed during 6 hr in Sept-Oct 2004. Low X-ray and optical activity. 1ES 1959+650 Albert et al., ApJ 639 (2006) 761 Consistent with HEGRA spectrum in similar activity state

  10. Hadronic models are favored for this source: “Orphan” flare observed by Whipple. Hint of neutrino signal during flaring period reported by AMANDA. 1ES 1959+650 Albert et al., ApJ 639 (2006) 761 Multiwavelength campaign with Suzaku last May Good quality data! Krawczynski et al. 2004

  11. 1ES 1218+30.4 Albert et al., ApJ 642 (2006) L119 • First source discovery of MAGIC. • z = 0.182, one of the furthest objects detected at VHE. • Observed during 8.2 hr at low Zd. • No time variability.

  12. Mkn 501 • Two strong flares observed in July 2005. • Complete analysis going to be published soon.

  13. Flux level decreases by a factor of 2 between 2005 and 2006. No correlation between different energy bands. Redshift unknown. Observed during 2005 and 2006. Evidence of VHE γ-ray emission reported by H.E.S.S. collaboration (Aharonian et al. 2006). Detected by MAGIC both in 2005 and 2006 with more than 6σ significance. PG 1553+113

  14. PG 1553+113 intrinsic spectrum EBL absorption observed spectrum dN/dEi = dN/dEobs x exp[τγγ(E,z)] Measure spectrum Assume EBL model Limit hardness of intrinsic spectrum Redshift upper limit z < 0.78

  15. Mkn 421 • It is the closest and one of the best studied TeV blazars. • It has been observed with MAGIC during 29 hr, including 1.5 hr of simultaneous observations with H.E.S.S.

  16. Mkn 421 dN/dEi = dN/dEobs x exp[τγγ(E,z)] Measure spectrum Assume EBL Know redshift Intrinsic spectrum Z = 0.030

  17. Mkn 421

  18. Clear X-ray/γ-ray correlation Evidence of SSC emission Mkn 421

  19. Mkn 421 Clear X-ray/γ-ray correlation Evidence of SSC emission

  20. MAGIC II • Clone of MAGIC with some improvements: • PMT camera with cluster design, with possibility to update to HPDs. • Ultra-fast 2.5 GHz readout. • Structure has already been built in La Palma. • Start commissioning phase in summer 2007.

  21. Conclusions • MAGIC telescope completed its first physics campaign. • The discovery of a new source has been reported, some more are on the publication queue. • Established VHE γ-ray emitters have been studied in detail. • MAGIC II is currently under construction and will be operative in 2007.

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