Next version of abstract -- probably needs more work.

From: Saul Perlmutter (saul@lbl.gov)
Date: Thu Jan 26 2006 - 13:10:09 PST

  • Next message: Marc Postman: "Re: Next version of abstract -- probably needs more work."

    Our Cycle 14 program has now proven a new extremely efficient approach
    to obtain z>1 dust-free Type Ia supernovae, and we here propose to
    capitalize on this new technique . We will collect a total sample of
    ~20 z>1 SNe Ia in cluster ellipticals, yielding dark energy measurements
    that do not suffer from the major systematic uncertainty at these
    redshifts, that of the extinction correction with a prior. By targeting
    massive galaxy clusters at z>1, we obtain a five-times [CHECK] higher
    efficiency in detection of Type Ia supernovae in elliptical galaxies,
    and provide a well-understood host galaxy environment. These same deep
    cluster images then also yield fundamental calibrations required for
    future weak lensing and Sunyaev-Zel'dovich measurements of dark energy,
    as well as an entire program of cluster studies. The data will make
    possible a factor of two improvement on supernova constraints on dark
    energy time variation, and much larger improvement in systematic
    uncertainty, taking advantage of the uniquely well-controlled host
    environment that clusters provide. They will provide both a cluster
    dataset and a SN Ia data set that will be a longstanding scientific
    resource.



    This archive was generated by hypermail 2.1.4 : Thu Jan 26 2006 - 13:10:45 PST