Stato di MAGIC Alessandro De Angelis Roma 31

Stato di MAGIC Alessandro De Angelis Roma, 31 Maggio 2006 • Performance e risultati di MAGIC • Piani per il Ciclo 2 • Il secondo telescopio e gli specchi • Conclusioni e richieste

The threshold • We are publishing with a threshold of 70 Ge. V • We detect significant signal above 40 Ge. V • Understanding our efficiency towards the goal of 40 Ge. V. A special task force (UHU) has been set up; preliminary physics results at 50 Ge. V. – Substantial improvement on DM studies and determination of cosmological constants 2

Cycle 1 (Feb 2005 -Apr 2006) • Statistics of physics runs for Cycle 1: – 1070 hours dark time out of 1714, plus 150 h “good technical runs”, and 212 hours moon • Moon time increasing to an asymptotical value ~1/3 – ~100 hours To. O (with some important results) • will increase with the increased number of collaborations – Suzaku, Swift, GLAST, AGILE, … • All data analyzed – Papers published or submitted for all positive signals, but 6 (Crab, Mkn 501, x, y, z, t) • 2 GRB observations during the primary burst • MAGIC Catalog opened (MAGIC Jxxx-yyy) 3

Cycle 2 • From period 42, starting on May 14, 2006, to period 54, ending on May 29, 2007 • 840 dark time hours recommended for observation time in Class A, plus a maximum (? ) of 236 h for To. O – – + 46% to AGN 28% to Galactic Sources 9% to Pulsars 14% to DM, including M 87 Special projects (t neutrinos, …) GRB fully accepted (36 h To. O) – going towards a further improvement of the response time 4

1. 2. 3. 4. MAGIC scientific papers in 2006 I: AGNs “Observation of VHE g emission from the AGN 1 ES 1959+650 with MAGIC”, Ap. J 639 (2006) 761. “Discovery of VHE g -ray emission from 1 ES 1218+30. 4”, Ap. J Lett. 642 (2006) 119. “Observations of Mkn 421 with MAGIC”, astroph/0603478, accepted for publication in Ap. J. Detection of VHE radiation from the BL Lac PG 1553+113 with the MAGIC telescope, subm. to Ap. J-L. 1 ES 1218 (z=0. 18) New Source PG 1553 (New source PG 1553: source at z~0. 3 detected at 9 s 5

MAGIC scientific papers in 2006 II: SNRs and m. QSR Index – 2. 5 ± 0. 2 5. 6. 7. “MAGIC observations of VHE g -rays from HESS J 1813 -178”, Ap. J Lett. 637 (2006) 41. “Observation of VHE g radiation from HESS J 1834087/W 41 with MAGIC”, Ap. J Lett. 643 (2006) 53. “Variable Very High Energy Gamma-Ray Emission from the m. QSR LS I+61 303”, Science, May 2006. Source is Extended! 90 cm VLA (green) + MAGIC (bck) + 12 CO (black) First m. QSR at VHE (up to 5 Te. V) Hint of periodicity over 6 T 6

MAGIC scientific papers in 2006 - III 8. “Flux upper limit of g-ray emission by GRB 050713 a from MAGIC”, Ap. J Lett. 641 (2006) 9. “Observation of g rays from the Galactic Center with MAGIC”, Ap. J Lett. 638 (2006) 101. + 8 additional publications in the pipeline (including 3 -4 new sources) GRB 050713 a GRB 050904 (in prompt phase) And response time IMPROVING! Galactic Center Mkn 501 giant flare 2 min resolution Bins ofcurve 2 min Light 7

Extragalactic PKS 2005 PG 1553 s w Ne rce u So At least a handle on EBL, but also the possibility of accessing cosmological constants (Martinez et al. ) could become reality soon (maybe including X-ray obs. ) 8

Realistic goal for the performance of MAGIC in 2006 (single telescope) GLAST Crab E. F(>E) [Te. V/cm 2 s] 10% Crab MAGIC HESS 1% Crab 9

The second telescope • Structure finished in December 2005 (in schedule); works stopped since then • Second telescope is essential to improve performance (better angular resolution, lower threshold) and to reach HESS’ sensitivity at the Te. V • HESS has just finished the foundations of its 5 th telescope, the “big one”, which should lower the threshold below MAGIC – Presently, thanks to our lower threshold, we are competitive/complementary wrt HESS, but we risk to be again rushing to get them… 10

Mirrors: 1 m 2 layout • Very similar to the small mirrors Front plate Mirror box + honeycomb Central hole for the laser housing 11

Layout comparison 50 cm mirrors AMC motors 1 m mirror 12

Production steps 1. Raw blank assembling Front plate glued with al box and honeycomb Already spherical shape 2. Diamond milling 3. Quartz layer surfacing 4. Ready! (7 mirrors already done in Padova, 2 in Munich) 13

Test on the mirror spot • Results: Spot is comparable to the one we had for 0. 5 m mirrors! 0. 5 cm The rigidity of the new mirrors and the tune-up of the milling machine are delivering very good results 14

3 large mirrors already installed in Oct 05 winter has passed… and we manage the technique! 15

Calendar (tentative) • • • May ‘ 06 Tests and new test mirrors June ‘ 06 Tooling realization July ’ 06 Starting production first mirrors Spring ‘ 07 First batch installation End ’ 07 Reflector completed Essential to be financed now 16

Conclusions • MAGIC is close to the design performance for 1 telescope – Threshold of 70 Ge. V for physics analysis; close to understand down to 50 Ge. V, and signal from 40 Ge. V • MAGIC is delivering very good physics results – In 2006, 7 papers published (one in Science) and 2 submitted, with 3 new sources; 5 papers in the pipeline, with 3 -4 additional new sources • Cycle 2: important commitment to test more fundamental physics (DM, Lorentz violation, …) • Need financement for the mirrors on the second telescope to double the sensitivity and stay competitive with HESS – New 1 m 2 mirrors successfully tested on the 1 st telescope 17

Richieste • Sblocco sj ME (48. 5 k. EUR) • Integrazione common funds 24 k. EUR (oltre ai 54. 6 gia’ pagati) – Spese impreviste (asfaltatura, linea elettrica non a norma, lavori edili non a norma, sistema antiincendio, quota PD) – La quota di CF totale per firma, incluse le spese straordinarie, e’ di 2. 6 k. EUR • 1/3 degli specchi del secondo telescopio (230 k. EUR) 18