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VERY ENERGETIC RADIATION IMAGING TELESCOPE ARRAY SYSTEM

VERITAS Mark Lang, National University of Ireland, Galway. VERY ENERGETIC RADIATION IMAGING TELESCOPE ARRAY SYSTEM. VERITAS Organization. Teaming Agreement Collaborators

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VERY ENERGETIC RADIATION IMAGING TELESCOPE ARRAY SYSTEM

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  1. VERITAS Mark Lang, National University of Ireland, Galway VERY ENERGETIC RADIATION IMAGING TELESCOPE ARRAY SYSTEM

  2. VERITAS Organization Teaming Agreement Collaborators Iowa State University Adler Planetarium Leeds University Barnard College McGill University DePauw University National University of Ireland, Dublin Grinnell College Purdue University U.C. Santa Cruz Smithsonian Astrophysical Observatory U. Mass. University of California, Los Angeles N.U.I., Galway University of Chicago Cork I.T. University of Utah Galway-Mayo I.T. Washington University, Saint Louis Argonne National Lab. The VERITAS Collaboration Project Office: Whipple Observatory, SAO (Managing Organization) Funding from NSF/DOE/Smithsonian/PPARC/SFI/NSERC

  3. VERITAS – UK Leeds: Stella Bradbury, Michael Hillas, Johannes Knapp, Jeremy Lloyd-Evans, Joachim Rose Oxford: (Associate) Ignacio de la Calle Perez

  4. VERITAS – Ireland UCD: John Quinn NUI Galway: Gary Gillanders, Mark Lang Galway-Mayo Inst. Tech.: Pat Moriarty Cork Inst. Tech.: Josh Reynolds

  5. VERITAS – Ireland Data Acquisition Software Data Analysis Software Optical alignment Sky-clarity monitoring 10m AGN monitoring

  6. Whipple Base camp site 1967-8 In

  7. VERITAS 2007 Instrument: ● Four 12-m telescopes ● 500-pixel cameras (3.5° FoV) ● FLWO, Mt. Hopkins, Az (1268 m) ● Completed Spring, 2007

  8. Specifications: ●Energy threshold ~ 150 GeV ● Source location < 0.05° ● Energy resolution ~ 10-20 % ●Sensitivity (crab) ~ 31 s hr -½

  9. Kitt Peak Site (Horseshoe Canyon).

  10. VERITAS-4 at the Whipple Observatory T2 Since January 2006 109 m Fall 2006 85 m T3 85 m T1 35 m T4 January 2007

  11. Crab Signal as seen in VERITAS in real time VERITAS: 31 sigma in one hour of data taking

  12. GALACTIC Crab Nebula (plerion) LSI +61 303 (binary)* IC433 (SNR) Cas A (SNR) MGRO J1908 (dark) EXTRAGALACTIC Mrk 421 (blazar) Mrk 501 (blazar) H1426+42 (blazar) 1ES2344 (blazar) 1ES1218 (blazar) M87 (radio galaxy)* RGB0152+017 (blazar) Sources detected by VERITAS(as of November, 2007)

  13. LS I +61 303: Binary

  14. VERITAS Detection of LS I+61 303:40.8 hr of data:Oct. ’06 – Jan. ’07Two/three telescopesSignificance = +8.6 σMean rate = 0.24 +/- 0.03 γ/min

  15. VERITAS Active TeV regions Active X-ray Regions

  16. 44 h of 3-telescope observations • elevations from 55o to 71o • 5.1 σ, Rate of ~0.1 γ/min • ~1.7% of Crab Nebula flux (E>250 GeV)

  17. TeV Variability of M87 VERITAS constant flux fit: χ2 = 21.4/22 HESS Tubac, April 27, 2007

  18. X-ray/TeV gamma-ray

  19. VERITAS Observing Program • Allocation of time • Key Science Projects (50%) • Scheduled by TAC (35%) • Director’s Discretionary (15%) ToO and Engineering • Key Projects: • Sky Survey (130 hours) • AGN (110 hours) • SNR (100 hours) • Dark Matter (60 hours) • Guest Observer Program • Strong Associates Program • No formal GI program

  20. End

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