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 = {Mon Oct 15 00:00:00 EDT 2007},
month = {Mon Oct 15 00:00:00 EDT 2007}
}