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ics Joint Astronomy-Physics Colloquium
Friday, February 17, 2006
4:00 PM
Physics Building, Room 203
Note special time.
Note special room.
Christopher Stubbs [Host: Brad Cox]
Harvard University
"Preliminary Results on the Nature of the Dark Energy from the ESSENCE Supernova Survey "
The discovery of the accelerating expansion of the Universe provides clear evidence of physics beyond the standard model. Our current challenge is figuring out what it means! I will describe the initial results we have obtained in the ESSENCE supernova survey. This project was designed to detect 200 type Ia supernovae in the redshift range between 0.2 < z < 0.8, with the goal of measuring the equation of state parameter of the Dark Energy. We are paying particular attention to potential sources of systematic errors that might afflict the measurement, and I will describe some of the steps we are taking to both control and quantify these effects.

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