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Recent Highlights of MAGIC

Recent Highlights of MAGIC. Razmik Mirzoyan On behalf of the MAGIC Collaboration Max-Planck-Institute for Physics Munich, Germany. Today‘s VHE g- ray Sources in the Sky. http://tevcat.uchicago.edu/. ~150 Established Sources. The Two 17m Ø MAGIC Telescopes.

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Recent Highlights of MAGIC

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  1. Recent Highlights of MAGIC Razmik Mirzoyan On behalf of the MAGIC Collaboration Max-Planck-Institute for Physics Munich, Germany

  2. Today‘s VHE g-raySources in the Sky http://tevcat.uchicago.edu/ ~150 EstablishedSources Razmik Mirzoyan: Recents Highlights of MAGIC

  3. The Two 17m Ø MAGIC Telescopes Razmik Mirzoyan: Recents Highlights of MAGIC

  4. System of 2 MAGICs: the main parameters • Energy threshold (trigger): ~ 50 GeV • Energy threshold in “Sum-Trigger” modus: 25-30 GeV • Energy resolution: 20 % @ 100 GeV; < 15 % @ 1TeV • Angular resolution: 0.1° @ 100 GeV; 0.05° @ 1 TeV • Sensitivity: 7/1000 of Crab Nebula in 50h observations • Light-weight construction, only ~70 T • Fast re-positioning to any coordinates in the sky: 20s/180° • Electro-optical design optimized and set to provide ~2.5ns FWHM pulses • Data digitized by using 2GSample/s DRS4 chips • Producing ~ 1 TB data per observation night Razmik Mirzoyan: Recents Highlights of MAGIC

  5. ~170 Collaborating Astro-Physicists from 9 Countries Bulgaria Sofia Croatia Consortium (Zagreb, +…) Finland Consortium (Tuorla, +…) Germany DESY Zeuthen, U. Dortmund, MPI Munich, U. Würzburg Japan Consortium (Kyoto, +…) ItalyINFN & U. Padova, INFN Pisa & U. Siena, INFN Como/Milano Bicocca, INFN Udine/Trieste & U. Udine, INAF (Consortium: Rome, +…) Poland Lodz Spain U. Barcelona, UAB Barcelona, IEEC-CSIC Barcelona, IFAE Barcelona, IAA Granada, IAC Tenerife, U. Complutense Madrid, CIEMAT Madrid Switzerland ETH Zurich Razmik Mirzoyan: Recents Highlights of MAGIC

  6. The Main Telescopes of the “Roque de los Muchachos” European Northern Observatory ORM is located on the Canary island of La Palma, at a height of 2200-2400 m a.s.l. Razmik Mirzoyan: Recents Highlights of MAGIC

  7. Beginningsof MAGIC • In mid 1994, still whenbuildingthe HEGRA telescopes, we understand thatthethresholdof an IACT dependsinversely on themirrorarea (and NOT assquarerootfromthe inverse area). Thatmeantonecanbuildvery large sizetelescopesof ~200m² mirrorarea (~15-20m Ø) providing ~20-times lowerthresholdof ~50GeV (HEGRA: ~10m², threshold ~1TeV) • The pioneeringworkofbuildingthe 17m Ø MAGIC was a difficulttask, weneedtoinvestplentyof time andefforts • Other colleaguesfrom HEGRA followedthepathofproventechnologies (stemingfrom HEGRA andfrom 10m Ø Whipple). Theybuilt H.E.S.S.. • Now, slightlyover 10 years after HEGRA, onecansaythatbothdecisionswereverysuccessfulandverymuchjustified! Razmik Mirzoyan: Recents Highlights of MAGIC

  8. MAGIC technologicalnovelties • It was impossibletosimplyup-scalethe ~4.2m diameter HEGRA telescopestotheaimed 17m diameter MAGIC • Forsuccessful „invasion“ into <100GeV domainweneededtodevelopandtestquitesomenumberofnewtechnologies • AMC system, all-Al diamondmilledmirrors • Light-weightmechanicalmountfromreinforced CF • Fast repositioningtoarbitraryposition in thesky (for „catching“ GRBs) • Super-bialkali PMTs, lowgain, VCSELs foroptical analog signaltransport, 2GSample/s FADC, sealed, T° controlledcamera, ultra-fast electro-optical design ofthetelescope,… Razmik Mirzoyan: Recents Highlights of MAGIC

  9. Fast Rotation of MAGIC to„catch“ GRB Razmik Mirzoyan: Recents Highlights of MAGIC

  10. Recently MAGIC reportedplentyofresults • Despitethefactthat in the last 2 years MAGIC was underupgradeforabout 1.5 yearslong, andonlypartially in testoperation, wemade a richharvestofnewresults • MAGIC discovered 20 out of 58 known extra-galacticsources Razmik Mirzoyan: Recents Highlights of MAGIC

  11. IC 310: Unexpected Discovery in the Perseus Cluster ofGalaxies • Flux and spectral variability in X-ray • Day-scale variability in VHE, no spectral variability • Hard spectrum in HE and VHE  2nd hump ≥ 1TeV • Original head-tailclassification not supported • VLBI reportsparsec-scaleblazar-likestructures; q ≤ 38° • MWL campaign in Nov. 2012 to Feb 2013 IC 310: detected≥ 30GeV byFermi/LAT (Neronov et al. 2010) & ≥ 260GeV by MAGIC (Aleksic et al. 2010) Razmik Mirzoyan: Recents Highlights of MAGIC

  12. VHE Flareof IC 310 on Nov. 12-13 2012 • 28.5 s in 3.5h for E ≥ 250GeV; • Light curve ≥ 300 GeV • Low fluxmeasured after theflarewithnosignificantvariations • Variability on a time scaleof a fewminutes Razmik Mirzoyan: Recents Highlights of MAGIC

  13. Mkn-421: Broadband SED Characterization and Modeling on 1-Day Timescales A two-zone SSC model with a quiescent and flaring blob describes the SED better than the (commonly used) one-zone SSC model Razmik Mirzoyan: Recents Highlights of MAGIC

  14. The very low X-ray and VHE activity of Mrk421 • Synchrotron and IC peaks shift to low energies by factor ~10 • NuSTAR exquisite characterization of the tail of the synch. bump Razmik Mirzoyan: Recents Highlights of MAGIC

  15. Unprecedented flaring activity of Mrk421 during April 2013 • Large flare lasting many days, with VHE gamma-ray fluxes ≥ 11 Crab • Excellent multi-instrument coverage, including strictly simultaneous observations with Swift and NuSTAR. • Unprecedented opportunity to test theoretical models • MWL data is currently being analyzed Razmik Mirzoyan: Recents Highlights of MAGIC

  16. New Source: MS 1221.8+2452 discovered in May 2013 • Blazar • z = 0.218 • Discovered in the • night April 30th – May 1st • 6.3s in 4h • High synchrotronpeaked • BL Lac • XBL (X-rayselected BL Lac) • 2.3% Crab ≥ 100GeV • continuedobserving • togetherwith SWIFT Discovery of Very High Energy Gamma-Ray Emission from MS1221.8+2452 with the MAGIC telescopes ATel #5038 Juan Cortina (IFAE Barcelona) on behalf of the MAGIC collaboration on 2 May 2013; 19:25 UTCredential Certification: Juan Cortina (cortina@ifae.es) Subjects: Gamma Ray, TeV, VHE, Request for Observations, AGN, Blazar, Transient The MAGIC collaboration reports the discovery of very high energy ( VHE; E>100 GeV) gamma-ray emission from MS1221.8+2452 (12h24m24.2s +24d36m24s, J2000.0). Razmik Mirzoyan: Recents Highlights of MAGIC

  17. New Source: H1722+119 discovered in May 2013 See ATel #5080 • A highlypolarised BL Lac • Listed in Costamante & • Ghisellini 2002 • from Fermi 2nd catalogue • redshiftlowerlimit ≥ 0.17 • Simultaneousoptical, X-ray, • and Fermi LAT data • Measured on May 17-22 • ~6.5s in 10h Preliminary These observations were triggered by the optical high state observed by the Tuorla blazar monitoring program, like many other MAGIC discoveries in the past Razmik Mirzoyan: Recents Highlights of MAGIC

  18. W51 • W51A & W51B:star forming regions, W51C medium-age (~30kyr) SNR @~5.5 Kpc. • Possible PWN CXO J192318.5+1403035 maybe associated with W51C(Koo et al 2005) • The SNR appears to be interacting with W51B(Koo et al. 1997, Green et al. 1997) • High Cosmic Ray ionization, ~100xISM value (Ceccarelli et al. 2011) • MAGIC stereo data taken in 2010 and 2011 (53h), 11 σ signal 0.4º Razmik Mirzoyan: Recents Highlights of MAGIC

  19. The morphology cartoon of W51 J.Krause thesis Razmik Mirzoyan: Recents Highlights of MAGIC

  20. W51 as seen by MAGIC Skymaps: 0.3 < E < 1 TeV Skymaps: E > 1 TeV Razmik Mirzoyan: Recents Highlights of MAGIC

  21. W51:SNR W51C interacts with molecular clouds in W51B The broad-band spectral energy distribution can be explained only (1-zone) with a hadronicmodel. Thisimplies proton acceleration ≥50TeV. This result, together with the morphology of the source, tentatively suggests that we are observing ongoing acceleration of ions in the interaction zone between the supernova remnant and the cloud. Aleksic, et al, 1012 Razmik Mirzoyan: Recents Highlights of MAGIC

  22. Unidentified source HESS J1857+026 • HESS discovery 2008 • Crab-like spectrum, ~0.15 C.U. • Extention: 0.11°x0.08° • Distance: 9 kpc (factor 2-3 uncertain) • Age: 21 kyr • PWN candidate: PSR J1856+0245 detected • Vela-like pulsar nearby • Spin-down luminosity 4.6 x 1036 erg/s Razmik Mirzoyan: Recents Highlights of MAGIC

  23. MAGIC measurements • Data taken in 2010 • ~ 30h effectiveobservations • ~ 12sdetection • Extention (≥ 300GeV): • (0.20 ± 0.03stat ± 0.02sys) • Power lawspectrum • in 0.4° integrationradius • G = 2.24 ± 0.07stat ± 0.15sys • (80 GeV – 20 TeV) • Position compatiblewith • H.E.S.S. & Fermi/LAT • Spectralmeasurements • bridging Fermi/Latand H.E.S.S • Recentresultsby Fermi/LAT • Spectralslope -1.5 (< 100GeV) • Point-like (> 10GeV) • Leptonicrequireslow B-field • Also hadronic model possible Razmik Mirzoyan: Recents Highlights of MAGIC

  24. Morphology from MAGIC measurements 300 – 1000 GeV > 1000 GeV Razmik Mirzoyan: Recents Highlights of MAGIC

  25. Parameters ofresolvedregions Lack ofemissionbetweenpulsarand MAGIC J1857.6+0297 cast doubt on a common PWN scenario Razmik Mirzoyan: Recents Highlights of MAGIC

  26. New source: MAGIC J1857.6+0297 • For E ≥ 1TeV • 2 spatiallyseparatedemissionregions, strong signalfromeach • MAGIC J1857.2+0263 likelythe PWN ofthepulsar J1856+02245 • MAGIC J1857.6+0297 lies in thevicinityof an HII region, the • positionoftheTeVemissioncoincideswiththepossible gas cavity Razmik Mirzoyan: Recents Highlights of MAGIC

  27. VHE spectrumoftheCrabNebulaandofthe Pulsar • MAGIC & VERITAS measuredthespectrumoftheCrabpulsarstretchingtillenergiesashighas 400GeV! • The CrabNebulaspectrumismeasured in 50GeV – 50TeV rangeby MAGIC • But wearelearningmoreandthestoryiscontinueing Crabpulsar: P1 + P2 Aleksic, et al, 2012 Razmik Mirzoyan: Recents Highlights of MAGIC

  28. Cartoon of a pulsar Razmik Mirzoyan: Recents Highlights of MAGIC

  29. New datashowsmuchnarrowerpulsedpeaks In a highstatisticsdatawecanseemanydetails, likeforexample, thatthepeaks P1 and P2 areverynarrow Thiscouldbeimportantforthepulsartheory recent, preliminarydata Razmik Mirzoyan: Recents Highlights of MAGIC

  30. MAGIC Upgrade Talk by D. Mazin, 1071, GA-IN01 • Started upgrade the MAGIC telescope in mid summer 2011 • Successfully finished in November 2012 • The aim was to use the same cameras, the same readout, providing stable operation for the next 5-7 years • Decrease dead-time down to 1%, enlarge trigger area of M1 and overlap of 2 telescopes, provide lower by ~(10%) threshold • M-I has got the next built-in in MPP camera (576 -> 1039 pixels) • Both telescopes are readout by using 2GSample/s DRS4 chips • New receiver boards, new trigger • Fully-automatic Sum-Trigger will be implemented in Sept. 2013 • We expect a trigger threshold of 25-30GeV with SUM-Trigger Razmik Mirzoyan: Recents Highlights of MAGIC

  31. MAGIC-1 obtained the new 1039 pixel camera Razmik Mirzoyan: Recents Highlights of MAGIC

  32. Next 5-7 years • Planning to have smooth operation for the next 5-7 years • Software improvements should help to further enhance the current sensitivity • Next serious improvement of sensitivity is planned to happen with the installation of SUM-Trigger (fall 2013; currently under construction); threshold ~ 20-30 GeV • Performance of MAGIC was never as good as it is now • Successful source hunting and deep observation of diverse source types entered in its most sensitive phase Razmik Mirzoyan: Recents Highlights of MAGIC

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