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 transcript:

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

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

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

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 O(100 m)

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

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

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

MAGIC science overview 2009/ Astronomer‘s Telegrams: M87flare, initiating joined observations (~10% crab) IC 310detection in 20 h (~2.5% Crab) M87historic high (~20% Crab), together with VERITAS PKS / 4C FSRQ, z=0.43, extremely bright (>30% Crab) FGL J 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 S blazar, detection, z=0.31 Mrk 501 blazar, MWL, low state PG blazar, MWL Perseus Clusterupper limit cluster & NGC 1275 OJ 287blazar, MWL study Suzaku, no gammas despite flare -> IC LS I gamma-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

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

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  

Head-Tail Radio Galaxy IC 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)

Distant AGN – EBL 12 most distant AGN detected at VHE: 3C 297 (FSRQ): z=0.5 redetected in 2007 second FSRQ (PKS z=0.43 detected -> ATel 06/2010 detection of S published, 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

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

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 GeV Best overlap with Fermi / LAT CHIPP Plenary Meeting / September 24 th, 2010