jean ballet, isabelle grenier cea saclay dsm/irfu/sap
DESCRIPTION
Jean Ballet, Isabelle Grenier CEA Saclay DSM/IRFU/SAp. GLAST: schedule and science program on behalf of the LAT collaboration. GLAST Observatory. Large Area Telescope (LAT) 20 MeV – 300 GeV Gamma-ray Burst Monitor (GBM) 8 keV – 30 MeV launch June 2008 lifetime: 5 + 5 years. - PowerPoint PPT PresentationTRANSCRIPT
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GLASTObservatoryLarge Area Telescope (LAT)20 MeV 300 GeVGamma-ray Burst Monitor (GBM)8 keV 30 MeV
launch June 2008 lifetime: 5 + 5 years
http://glast.gsfc.nasa.gov/public/resources/images/
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LAT telescopeGround eventSimulation of high-energy gammaValidation by beam test at CERN in 2006 on 2 towersReconstruction
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GLAST comparable to ACTs, 1 year all-sky vs a few days in a small fieldhttp://www-glast.slac.stanford.edu/software/IS/glast_lat_performance.htmSensitivity
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LAT performance20 MeV to 300 GeV, sensitivity > 25 x EGRET3.2 to 9 resolution > GeV, 5 dE/E 10 %2.5 sr, 3/4 sky per orbit, slewing => all sky every 3 hEGRETLAT 1 year
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the LAT sky> 100 MeV, 1 yrsensitivity x25localization x10field x4-raybinariespulsar winds-qso jets> 2000 AGNblazars and radiogal = f(,z)evolution z 5Sgr A*102 GRB /yearGeV afterglowdark matterneutralino linesdark gas> 40 pulsarsmagnetosphere physicspulsar wind nebulaecosmic raysacceleration in supernova remnantsOB associations, SNOBspropagation (MWay, M31, LMC, SMC)interstellar mass tracers in galaxieshopesstarburst galaxiesgalaxy clustersunIDs
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-ray blazarsEGRET46 FSRQ + 14 Bl Lac (to be revised)to z = 4.5 and 5.5TeV20 sources, z < 0.2to E > 30 TeV+ M87 radiogalaxySowards-Emmerd et al. 04Dermer 07FSRQ EGRET
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-ray blazarsLAT~ 2000 blazar detectionsdeep all-sky surveyz 5 because of Doppler amplificationDermer 07
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synchrotron & ICaccretion rate ?Donato 01
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variability: multi- campaigns
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-ray pulsars: from 6 to tens~ 220 radio and X-ray pulsars monitored for ephemeridesParkes, Jodrell, Greenbank, Nancay, RXTE, XMM ... coord: David SmithLook for new GemingasSearch for periodicities in time differences. Atwood et al 06Extend the relations between:-ray luminosity and spindown powerspectral hardening and ageLook for Pulsar Wind Nebulae:more difficult than at TeV
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55 daysimulationE>200 MeVE>100 MeVE>100 MeVE>100 MeVE>100 MeVE>300 MeVM. RazzanoLAT team
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polar cap / slot gap / outer gappopulation studies(l,b) distributionspectralightcurve shapes+B e+X e
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RX J1713.7-3946HESS + X-ray contoursBrightest TeV supernova remnantHadronic and leptonic models for TeV emission predict very different GeV flux
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confused unIDs
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GLAST launch and early operationsLaunch date now early June, after shuttle launch on May 31Early operations:Two weeks turn-on and checkoutTwo weeks calibration runsFirst light (short survey mode) after one month (early July)Pointed and survey mode tuning for one monthStart year 1 science operations after two months (survey mode with occasional repoints for GRBs or ToOs)
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GLAST LAT datato be delivered readily:-ray bursts, bright transientslightcurves of useful variable sources
after 6 months:simple conservative 3-months source list for supporting 2nd AOanalysis software suite
after 1 year:calibrated data, skymapsinterstellar modelfull source catalogue (1+2+5 yr)
Stay tuned in early June !