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Mega-masers, Dark Energy and the Hubble Constant

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Title Mega-masers, Dark Energy and the Hubble Constant
Author Fred Lo
Publisher SLAC National Accelerator Laboratory (SLAC)
Release Date 2007
Language English

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Subject Area Physics
Abstract Powerful water maser emission (water mega-masers) can be found in accretion disks in the nuclei of some galaxies. Besides providing a measure of the mass at the nucleus, such mega-masers can be used to determine the distance to the host galaxy, based on a kinematic model. We will explain the importance of determining the Hubble Constant to high accuracy for constraining the equation of state of Dark Energy and describe the Mega-maser Cosmology Project that has the goal of determining the Hubble Constant to better than 3%. Time permitting, we will also present the scientific capabilities of the current and future NRAO facilities: ALMA, EVLA, VLBA and GBT, for addressing key astrophysical problems
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  174 ms - page object

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AV-Portal 3.7.0 (943df4b4639bec127ddc6b93adb0c7d8d995f77c)