skip to main content

Title: Mega-masers, Dark Energy and the Hubble Constant

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 tmore »o 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« less
video
Title: Mega-masers, Dark Energy and the Hubble Constant
Authors:
Publication Date: 2007-10-15
OSTI Identifier: 1014169
DOE Contract Number: AC02-76SF00515
Other Number(s): TRN: US1105403
Resource Type: Multimedia
Resource Relation: Conference: SLAC Colloquium Series, SLAC National Accelerator Laboratory, Menlo Park, California, presented on October 15, 2007
Research Org: SLAC (SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States))
Sponsoring Org: USDOE Office of Science (SC)
Subject: 43 PARTICLE ACCELERATORS ; ACCRETION DISKS ; ACCURACY ; COSMOLOGY ; FERMILAB ACCELERATOR ; GALAXIES ; MASERS ; NUCLEI ; STANFORD LINEAR ACCELERATOR CENTER ; WATER
Country of Publication: United States
Language: English
Run Time: 1:18:40
System Entry Date: 2016-01-27