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Parameter Estimation From Improved Measurements of the Cosmic Microwave Background From QUaD
(IOP Publishing, 2010)
We evaluate the contribution of cosmic microwave background (CMB) polarization spectra to cosmological parameter constraints. We produce cosmological parameters using high-quality CMB polarization data from the ground-based ...
Characterization of the BICEP Telescope for High-precision Cosmic Microwave Background Polarimetry
(IOP Publishing, 2010)
The Background Imaging of Cosmic Extragalactic Polarization (BICEP) experiment was designed specifically to search for the signature of inflationary gravitational waves in the polarization of the cosmic microwave background ...
Measurement of Cosmic Microwave Background Polarization Power Spectra from Two Years of BICEP Data
(IOP Publishing, 2010)
Background Imaging of Cosmic Extragalactic Polarization (BICEP) is a bolometric polarimeter designed to measure the inflationary B-mode polarization of the cosmic microwave background (CMB) at degree angular scales. During ...
Measuring the spins of accreting black holes
(IOP Publishing, 2011)
A typical galaxy is thought to contain tens of millions of stellar-mass black holes, the collapsed remnants of once massive stars, and a single nuclear supermassive black hole. Both classes of black holes accrete gas from ...
A Simple Perspective on the Mass-Area Relationship in Molecular Clouds
(Oxford University Press, 2012)
Despite over 30 yr of study, the mass–area relationship within and among clouds is still poorly understood both observationally and theoretically. Modern extinction data sets should have sufficient resolution and dynamic ...
Infall and Outflow of Molecular Gas in Sgr B2
(American Astronomical Society, 2008)
Observations of two \(H_2CO (3_{03}-2_{02} and 3_{21}-2_{20})\) lines and continuum emission at 1.3 mm toward Sgr B2(N) and Sgr B2(M) have been carried out with the SMA. The mosaic maps of Sgr B2(N) and Sgr B2(M) in both ...
Toward a New Geometric Distance to the Active Galaxy NGC 4258. II. Centripetal Accelerations and Investigation of Spiral Structure
(American Astronomical Society, 2008)
We report measurements of centripetal accelerations of maser spectral components of NGC 4258 for 51 epochs spanning 1994 to 2004. This is the second paper of a series, in which the goal is the determination of a new geometric ...
An X‐Ray, Infrared, and Submillimeter Flare of Sagittarius A*
(American Astronomical Society, 2008)
Energetic flares are observed in the Galactic supermassive black hole Sagittarius A* from radio to X-ray wavelengths. On a few occasions, simultaneous flares have been detected in IR and X-ray observations, but clear ...
Event-Horizon-Scale Structure in the Supermassive Black Hole Candidate at the Galactic Centre
(Nature Publishing Group, 2008)
The cores of most galaxies are thought to harbour supermassive black holes, which power galactic nuclei by converting the gravitational energy of accreting matter into radiation. Sagittarius A* (Sgr A*), the compact source ...
Reply to Boslough: Is Greenland Pt anomaly global or local?
(Proceedings of the National Academy of Sciences, 2013)