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MAGIC Telescopes - Status and Results 2009/2010 - Isabel Braun Institute for Particle Physics, ETH Zürich for the MAGIC collaboration CHIPP Plenary Meeting.

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Presentation on theme: "MAGIC Telescopes - Status and Results 2009/2010 - Isabel Braun Institute for Particle Physics, ETH Zürich for the MAGIC collaboration CHIPP Plenary Meeting."— Presentation transcript:

1 MAGIC Telescopes - Status and Results 2009/2010 - Isabel Braun Institute for Particle Physics, ETH Zürich for the MAGIC collaboration CHIPP Plenary Meeting 2010

2 The MAGIC Telescopes 2 CHIPP Plenary Meeting / September 24 th, 2010 Recording Cherenkov light from air showers induced by gamma-rays Phase I (monoscopic) since 2004 Phase II (stereoscopic) since fall 2009 World‘s largest Cherenkov telescopes mirror diameter: 17 m field of view: 3.5 deg. pixels: 577 (1) / 1039 (2) MAGIC-1 MAGIC-2 Designed for low energy threshold & fast repositioning

3 The MAGIC Telescopes 3 CHIPP Plenary Meeting / September 24 th, 2010

4 Imaging Atmospheric Cherenkov Telescopes air shower cos  c = 1/(  n) primary  Cherenkov light cone ~100 m ~10 km Large collection area O(10 5 m 2 ) Cherenkov “flash” O(100 Phot./m 2 ) few ns duration Background: Noise of night sky >10 8 Phot./m 2 / s Charged Cosmic Rays ~ Factor 10 4 - 10 5 O(100 m)

5 Imaging Atmospheric Cherenkov Telescopes air shower cos  c = 1/(  n) primary  Cherenkov light cone ~100 m ~10 km focal plane: trigger requires coincidence (“hardware stereo”) Stereo improves: angular resolution energy resolution background suppression stability of the system

6 Stereo Performance 6 Sensitivity: 1.6% Crab (5  /50h) => 1% Crab Energy resolution: 25% (RMS) =>15% Direction: 0.1deg (  2D Gauss) => 0.07deg (<0.025 deg. systematic) CHIPP Plenary Meeting / September 24 th, 2010 stereo, preliminary

7 Fermi Overlap 7 CHIPP Plenary Meeting / September 24 th, 2010

8 MAGIC science overview 2009/2010 8 Astronomer‘s Telegrams: 10.02.2010M87flare, initiating joined observations (~10% crab) 25.03.2010IC 310detection in 20 h (~2.5% Crab) 09.04.2010M87historic high (~20% Crab), together with VERITAS 19.06.2010 PKS 1222+21 / 4C +21.35 FSRQ, z=0.43, extremely bright (>30% Crab) 22.07.20101FGL J2001.1+4351 BL Lac, very bright (~20% Crab) Publications since last CHIPP Meeting: 3C 66 A/Btwo variable source candidates in field of view, both interesting Mrk 421 blazar, MWL S5 0716+714blazar, detection, z=0.31 Mrk 501 blazar, MWL, low state PG 1553+113blazar, MWL Perseus Clusterupper limit cluster & NGC 1275 OJ 287blazar, MWL study Suzaku, no gammas despite flare -> IC LS I +61 303gamma-ray binary, MWL, correlated X-Ray & VHE, leptons favored 3 pulsar/PWNsearch yielding upper limits Cygnus X-3microquasar, MWL, upper limit AGN halo2 Mrk blazars, emission pointlike CHIPP Plenary Meeting / September 24 th, 2010

9 Galactic: News from LS I 61+303 9 CHIPP Plenary Meeting / September 24 th, 2010 Swift MAGIC High mass X/gamma-ray binary system Discovered by MAGIC in 2006. Periodic VHE emission: (26.8 ± 0.2) days Evidence for X-ray / gamma correlation

10 Galaxy cluster contains various possible sources Extragalactic: Perseus Cluster 10 CHIPP Plenary Meeting / September 24 th, 2010 Astrophys. J. 710 (2010) 634 Radio/ Seyfert 1.5 Galaxy NGC 1275 CR ++ -- 00   CDM  

11 Head-Tail Radio Galaxy IC 310 11 CHIPP Plenary Meeting / September 24 th, 2010 NGC 1265, similar to IC310 courtesy of NRAO/AUI and C.O‘Dea & F.Owen Fast movement through galaxy cluster First of its type seen in VHE Fermi: 2 photons in > 12 months MAGIC: detected in 20h-> ATel #2510 (03/2010)

12 Distant AGN – EBL 12 most distant AGN detected at VHE: 3C 297 (FSRQ): z=0.5 redetected in 2007 second FSRQ (PKS 1222+21) @ z=0.43 detected -> ATel 06/2010 detection of S5 0716+714 published, blazar @ z=0.31, 9% Crab => usable to constrain IR EBL CHIPP Plenary Meeting / September 24 th, 2010 EXCLUDED STILL ALLOWED Probing EBL spectrum 0.2-2μm stars dustCMB x x x  VHE  EBL  e + e - EBL

13 Galactic Halos 13 extended extragalactic objects? Comparison Crab (pointlike) with AGN => no extension => Limit on magnetic field strength CHIPP Plenary Meeting / September 24 th, 2010 Crab Mrk 421 Crab Mrk 501

14 Summary 14 MAGIC II: stereo observations for ~ 1 year Stereo: improved instument performance 3 new sources detected redetections & deep studies of many known sources publications in preparation Most sensitive instrument at 50-200 GeV Best overlap with Fermi / LAT CHIPP Plenary Meeting / September 24 th, 2010

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