March 23, 2000 CfA Colloquium

Title: Probing the Transient Universe From the Outside In

Speaker: Brian Schmidt

Abstract: Recent advances in instrumentation and computing enable us to survey the sky for objects which are not constant in time over broader regions and to fainter levels than previously possible. I will describe a number of surveys which we are undertaking aimed at exploiting transient objects as tools to understand the Universe on a scales from the solar system on up. These surveys include the High-Z SN Search, our program which uses Type Ia Supernovae to z>1 to measure the Global Properties of the Universe. Rapid Follow-up to Gamma Ray Burst Decections. The Abell Cluster and All Sky Southern Supernova searches, programs designed to measure the peculiar motions of galaxies. The Southern Sky RRLyrae survey to measure the kinematics and mass of the outer Halo of the Milky Way, and the TNO survey, a search of the ecliptic for bright Trans-Neptunian Objects. I will discuss the status of these different projects and show current results including the most distant SN Ia (z=1.23) and most distant halo star (R=100 kpc) yet detected.

References for students:

Lunch on Friday 3/24 at 12:00 pm in Phillips