1. VHE -ray physics overview GRBs AGN cold dark matter quantum gravity effects origin of cosmic rayscosmological -ray horizon -ray horizon pulsar -quasar -quasar shelltype SNR galactic center pulsar wind nebula 47 sources above 100 GeV seen by Hess+Magic, only 4 before!

2. The MAGIC -ray telescope Largest Cherenkov Telescope: 17 m Ø mirror dish 3.5° FoV Camera with 576 enhanced QE PMTs Fast repositioning for GRBs: average ~30s Trigger threshold: 50 GeV Analysis threshold: 60 GeV Sensitivity: 2.5% Crab / 50 h -PSF: ~ 0.1° Energy resolution: 20 - 30% Barcelona IFAE, UA Barcelona, U. Barcelona, HU Berlin, Instituto Astrofisica Canarias, U.C. Davis, U. Dortmund, U. Lodz, UCM Madrid, MPI München, INFN/ U. Padua, INFN/ U. Siena, INR Sofia, Tuorla Observatory, Yerevan Phys. Institute, INFN/ U. Udine, U. Würzburg, ETH Zürich PHYS DATA TAKING EFFICIENCY > 90% with good wheather & moon (1100 moonless hrs/year + 400 with moon)

3. Science highlights from MAGIC since 2006 18 scientific papers published or in press ~15 sources detected 5 new extragalactic sources discovered –Including the prototype of a new family of objects: LBL AGNs emit VHE gammas! MAGIC Coll., Discovery of VHE gamma emission from BL Lac, astro-ph/0703084, subm. to ApJ Lett 2 new galactic objects discovered –Including the prototype of a new family of objects MAGIC Coll., VHE gamma emission from the quasar LS I +61 303, Science 312 (06) 1771

4. Extragalactic VHE -ray sources 15 blazars & 1 radio galaxy VHE -rays: leptonic or hadronic origin? Fast flares can be used for tests on light propagation Gamma Ray Horizon cosmological parameters MAGIC observations: Mrk 421 z=0.030 astro-ph /0603478 Mrk 501 z=0.034 astro-ph 0702008 1ES2344+514 z=0.044 astro-ph /0612383 Mrk 180 z=0.045 ApJL 648 (2006) 105 1ES1959+650 z=0.047 ApJ 639 (2006) 761 BL Lacz=0.069 astro-ph/0703084 1ES1218+308 z=0.182 ApJL 642 (2006) 119 PG1553+113 z>0.09 ApJL 654 (2007) 119 3 more in pipeline redshift AGN with relativistic jet aligned with observers line of sight non-thermal emission, highly variable SSC model: Synchrotron+ IC Blazars: observer

5. Variability studies of Mkn 501: for the 1 st time, IC peak detected Huge Mkn 501 flare: 4 Crab intensity, signal more than doubled wrt baseline Intensity variation recorded in 2 minute bins => new, much stronger, constraints on emission mechanism and light-speed dispersion relations (effective quantum gravity scale). O (M p /100) reached High time-resolution study of AGN flare

6. Whats new – 1 : MAGIC2 & Italy Mirror production: @ full speed! –Blank production started 4 mould produced 4 mirrors/day production rate for full production 20 blanks already produced –Mirrors polishing tested 7 mirrors fully finshed @LT to test the full procedure ~1 mirror/day production rate In summer the production will stop for lack of funds: only 1/3 of mirrors (80) financed so far by INFN… 3 new mirrors mounted in the MAGIC I frame for test Performing well after > 1 year

7. Whats new – 2 : the CTA aims to explore the sky in the 10 GeV to 100 TeV energy range builds on demonstrated technologies: ~replicas of MAGIC, HESS in 2 sites (N/S) combines guaranteed science with significant discovery potential ~1000 sources expected R&D proposal now INFN leads: Mirrors Site section & Infrastructure If infrastructure financed in 2009, will take over MAGIC&HESS in 2012 Inner array (larger telescopes) Outer array (smaller telescopes) Efficiency @ 5 in 50 hours

8. Conclusions MAGIC is delivering very good physics results –detected ~15 sources –discovered 4 new VHE -ray sources –18 scientific publications (printed or submitted) Cycle2 almost completed: important commitment to test fundamental physics (DM, Lorentz violation, …) A second telescope will see the first light soon (end 2007?) 2 x better sensitivity no. of sources may increase up to ~50 We need money for it… Conclusions

9. Richieste Sblocco dei SJ (le missioni estere sono state particolarmente scarse questanno: per risparmiare MAGIC Italia fa turni di 24 notti consecutive) 230 kEUR per lottica di MAGIC2 (1/3) 240 + 50 + 10 kEUR per elettronica/DAQ di MAGIC2 Approvazione del nuovo MoU, nel quale MAGIC2 e esplicitamente incluso

10. Futuro (fino al 2010) Importante interazione con i satelliti gamma –Dal 2007: Run con AGILE –Dal 2008: Run con GLAST E fondamentale il completamento di MAGIC2, che raddoppia lefficienza, migliora la precisione angolare e abbassa la soglia energetica. Temibile la concorrenza di VERITAS, come MAGIC allemisfero N, che e ora operativo con 3 telescopi e entro lanno lo sara con 4 Ci si attende di arrivare entro il 2010 a ~30 nuove sorgenti VHE Il numero di FTE, oggi ~30, passera a ~35 (contatti con un nuovo gruppo che si presentera a giugno)