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LSST Astrophysics and Cosmology at Brookhaven: Dark Energy, Galaxy Clusters, Neutrinos

Explore LSST's groundbreaking research in astrophysics and cosmology, focusing on dark energy, galaxy clusters, and neutrino properties. Learn about the instrumentation, data management, and future plans of the Large Synoptic Survey Telescope project at Brookhaven National Laboratory.

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LSST Astrophysics and Cosmology at Brookhaven: Dark Energy, Galaxy Clusters, Neutrinos

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  1. LSST StudiesLarge Synoptic Survey Telescope DOE HEP Program Review April 18, 2006 Brookhaven National Laboratory Morgan May

  2. LSST at Brookhaven • Physics Dept (full time): James Frank, Sheng Wang (grad student), Postdoc, MM • Instrumentation: Veljko Radeka, Paul O’Connor, Peter Takacs • Many others making important contributions Morgan May

  3. LSST Astrophysics/Cosmology • Cosmology data  Fundamental Physics • Nature of Dark Energy: • Vacuum energy, scalar field or modified gravity? • Weak lensing- growth of structure+geometry • Multiple techniques • BNL role: Science – Sensors – Data Management/Analysis • Collaborators (Camera): Harvard, SLAC, Stanford, LLNL, U. of Illinois at Urbana, U. of Pennsylvania Morgan May

  4. LSST • Will survey sky 100 times faster than any existing facility. • Camera-DOE • 3 Gpixel focal plane • Data rate comparable to ATLAS Morgan May

  5. CMBLSS  z=1000 3>z>0 Courtesy of A. Kravtsov (U Chicago) WMAP 3 year Morgan May

  6. Weak Lensing by Large Scale Structure Courtesy of Alexander Refregier Morgan May

  7. Dark Energy Properties: w,wa LSST’s 200,000 galaxy clusters will tightly constrain dark energy equation of state P=wρ Morgan May

  8. Neutrino Dark matter: mν • Cosmology sensitive to Σmνbreaking the degeneracy of ν oscillation measurements • νstart out as hot dark matter, become non-relativistic (CDM) • LSST+Planck sensitive to mν > .03 eV < mνatmospheric Morgan May

  9. Galaxy Cluster Identification Filter Optimization LSST R&D Proposal January 2006 To be published Blue: Galaxy clusters detected by LSST using tomography Green: Apparent clusters due to projection effects Morgan May

  10. Sensor Studies • BNL-Harvard-CfA team. BNL lead role in Science Sensor development • $1.1 millionin study contracts funded by private donors, initiated by BNL • Pre-prototype sensors start arriving at BNL in July for testing • QE, point spread function of CCD and CMOS imagers. Wavelength range: UV to near IR • V. Radeka will discuss tomorrow Morgan May

  11. Data Management/Analysis • LSST Computing Facility • Synergy with BNL ATLAS Computing • Analysis sensor test data • Benchmarking pipelines on parallel processors • Simulations and analysis of precursor data sets • Postdoc 50% funding from LSST Corp Morgan May

  12. Future • LSST collaboration submitted R&D proposal to DOE January 2006 • 3 years R&D, followed by 4 years construction; First Light FY 2013 • Key role for BNL Morgan May

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