skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

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

Authors:
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
987369
DOE Contract Number:
AC02-76SF00515
Resource Type:
Multimedia
Resource Relation:
Conference: SLAC Colloquium Series, SLAC National Accelerator Laboratory, Menlo Park, California, presented on October 15, 2007
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; MEGA-MASERS; HUBBLE CONSTANT; DARK ENERGY; MEGA-MASER COSMOLOGY PROJECT

Citation Formats

Lo, Fred K.Y. Mega-masers, Dark Energy and the Hubble Constant. United States: N. p., 2007. Web.
Lo, Fred K.Y. Mega-masers, Dark Energy and the Hubble Constant. United States.
Lo, Fred K.Y. Mon . "Mega-masers, Dark Energy and the Hubble Constant". United States. https://www.osti.gov/servlets/purl/987369.
@article{osti_987369,
title = {Mega-masers, Dark Energy and the Hubble Constant},
author = {Lo, Fred K.Y.},
abstractNote = {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},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {10}
}

Multimedia: