VERY ENERGETIC RADIATION IMAGING TELESCOPE ARRAY SYSTEM
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1 VERY ENERGETIC RADIATION VERY ENERGETIC RADIATION IMAGING TELESCOPE ARRAY SYSTEM IMAGING TELESCOPE ARRAY SYSTEM VERITAS Mark Lang, National University of Ireland, Galway
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VERITAS Mark Lang, National University of Ireland, Galway. VERY ENERGETIC RADIATION IMAGING TELESCOPE ARRAY SYSTEM. VERITAS Organization. Teaming Agreement Collaborators - PowerPoint PPT Presentation
Transcript of VERY ENERGETIC RADIATION IMAGING TELESCOPE ARRAY SYSTEM
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VERY ENERGETIC RADIATION VERY ENERGETIC RADIATION IMAGING TELESCOPE ARRAY IMAGING TELESCOPE ARRAY SYSTEMSYSTEM
VERITAS
Mark Lang, National University of Ireland, Galway
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VERITAS OrganizationVERITAS Organization
Teaming Agreement CollaboratorsTeaming Agreement Collaborators
Iowa State University Adler PlanetariumIowa State University Adler Planetarium Leeds University Barnard CollegeLeeds University Barnard College McGill University DePauw UniversityMcGill University DePauw University National University of Ireland, Dublin Grinnell CollegeNational University of Ireland, Dublin Grinnell College Purdue University U.C. Santa CruzPurdue University U.C. Santa Cruz Smithsonian Astrophysical Observatory U. Mass.Smithsonian Astrophysical Observatory U. Mass. University of California, Los Angeles N.U.I., GalwayUniversity of California, Los Angeles N.U.I., Galway University of Chicago Cork I.T.University of Chicago Cork I.T. University of Utah Galway-Mayo I.T.University of Utah Galway-Mayo I.T. Washington University, Saint Louis Argonne National Lab.Washington University, Saint Louis Argonne National Lab.
Funding from Funding from NSF/DOE/Smithsonian/PPARC/SFI/NSERCNSF/DOE/Smithsonian/PPARC/SFI/NSERC
The VERITAS The VERITAS CollaborationCollaboration
Project Office: Whipple Observatory, SAO(Managing Organization)
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VERITAS – UK
Leeds:
Stella Bradbury, Michael Hillas, Johannes Knapp, Jeremy Lloyd-Evans, Joachim Rose
Oxford: (Associate)
Ignacio de la Calle Perez
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VERITAS – Ireland
UCD: John Quinn
NUI Galway: Gary Gillanders, Mark Lang
Galway-Mayo Inst. Tech.: Pat Moriarty
Cork Inst. Tech.: Josh Reynolds
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VERITAS – Ireland
Data Acquisition Software
Data Analysis Software
Optical alignment
Sky-clarity monitoring
10m AGN monitoring
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Whipple Base camp site Whipple Base camp site
1967-81967-8
In
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VERITAS VERITAS 20072007
Instrument:● Four 12-m telescopes● 500-pixel cameras (3.5° FoV)● FLWO, Mt. Hopkins, Az (1268 m)● Completed Spring, 2007
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Specifications:
● Energy threshold ~ 150 GeV● Source location < 0.05°● Energy resolution ~ 10-20 %● Sensitivity (crab) ~ 31 hr -½
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Kitt Peak Site (Horseshoe Canyon).Kitt Peak Site (Horseshoe Canyon).
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1212
85 m
109 m
85 m
35 mT1
Fall 2006
January 2007
T4
T2
T3
SinceJanuary
2006
VERITAS-4 at the Whipple Observatory
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Crab Signal as seen in VERITAS in real time
VERITAS:31 sigma in one hour of data taking
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Sources detected by Sources detected by VERITASVERITAS (as of November, 2007)(as of November, 2007) GALACTICGALACTIC
Crab Nebula Crab Nebula (plerion)(plerion)
LSI +61 303 LSI +61 303 (binary)(binary)**
IC433 (SNR)IC433 (SNR) Cas A (SNR)Cas A (SNR) MGRO J1908 (dark)MGRO J1908 (dark)
EXTRAGALACTICEXTRAGALACTIC Mrk 421 (blazar)Mrk 421 (blazar) Mrk 501 (blazar)Mrk 501 (blazar) H1426+42 (blazar)H1426+42 (blazar) 1ES2344 (blazar)1ES2344 (blazar) 1ES1218 (blazar)1ES1218 (blazar) M87 (radio galaxy)M87 (radio galaxy)** RGB0152+017 RGB0152+017
(blazar)(blazar)
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LS I +61 303: BinaryLS I +61 303: Binary
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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
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Active X-ray RegionsActive X-ray Regions
Active TeV regionsActive TeV regions
VERITAS
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•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)
The Rocky Road to VERITASThe Rocky Road to VERITAS Tubac, April 27, 2007 Tubac, April 27, 2007
TeV Variability of M87 VERITAS
HESS
constant flux fit: χ2 = 21.4/22
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X-ray/TeV gamma-ray X-ray/TeV gamma-ray
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VERITAS Observing VERITAS Observing ProgramProgram Allocation of timeAllocation of time
Key Science Projects (50%)Key Science Projects (50%) Scheduled by TAC (35%)Scheduled by TAC (35%) Director’s Discretionary (15%) ToO and EngineeringDirector’s Discretionary (15%) ToO and Engineering
Key Projects:Key Projects: Sky Survey (130 hours)Sky Survey (130 hours) AGN (110 hours)AGN (110 hours) SNR (100 hours)SNR (100 hours) Dark Matter (60 hours)Dark Matter (60 hours)
Guest Observer ProgramGuest Observer Program Strong Associates ProgramStrong Associates Program No formal GI programNo formal GI program
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