A High Reliability Survey of Discrete Epoch of Reionization Foreground...
Detection of the Epoch of Reionization HI signal requires a precise understanding of the intervening galaxies and AGN, both for instrumental calibration and foreground removal. We present a catalogue...
View ArticleFrequentist model comparison tests of sinusoidal variations in measurements...
Anderson et al have claimed to find evidence for periodic sinusoidal variations (period=5.9 years) in measurements of Newton's Gravitational constant. These claims have been disputed by Pitkin. Using...
View ArticlePolarization Sensitive Multi-Chroic MKIDs
We report on the development of scalable prototype microwave kinetic inductance detector (MKID) arrays tailored for future multi-kilo-pixel experiments that are designed to simultaneously characterize...
View ArticleThe new SOXS instrument for the ESO NTT
SOXS (Son Of X-Shooter) will be a unique spectroscopic facility for the ESO-NTT 3.5-m telescope in La Silla (Chile), able to cover the optical/NIR band (350-1750 nm). The design foresees a...
View ArticleSpectrometers and Polyphase Filterbanks in Radio Astronomy
This review gives an introduction to spectrometers and discusses their use within radio astronomy. While a variety of technologies are introduced, particular emphasis is given to digital systems. Three...
View ArticleIntensity interferometry: Optical imaging with kilometer baselines
Optical imaging with microarcsecond resolution will reveal details across and outside stellar surfaces but requires kilometer-scale interferometers, challenging to realize either on the ground or in...
View ArticleMathematical Foundations of the GraphBLAS [Replacement]
The GraphBLAS standard (GraphBlas.org) is being developed to bring the potential of matrix based graph algorithms to the broadest possible audience. Mathematically the Graph- BLAS defines a core set of...
View ArticleSuperplot: a graphical interface for plotting and analysing MultiNest output...
We present an application, Superplot, for calculating and plotting statistical quantities relevant to parameter inference from a "chain" of samples drawn from a parameter space, produced by e.g....
View ArticleThe upGREAT 1.9 THz multi-pixel high resolution spectrometer for the SOFIA...
We present a new multi-pixel high resolution (R >10^7) spectrometer for the Stratospheric Observatory for Far-Infrared Astronomy (SOFIA). The receiver uses 2 x 7-pixel subarrays in orthogonal...
View ArticleSelf-Consistent Modeling of Reionization in Cosmological Hydrodynamical...
The ultraviolet background (UVB) emitted by quasars and galaxies governs the ionization and thermal state of the intergalactic medium (IGM), regulates the formation of high-redshift galaxies, and is...
View ArticleSETI Observations of Exoplanets with the Allen Telescope Array
We report radio SETI observations on a large number of known exoplanets and other nearby star systems using the Allen Telescope Array (ATA) for about 19000 hours from May 2009 to Dec 2015. This search...
View ArticleUsing baseline-dependent window functions for data compression and...
In radio interferometry, observed visibilities are intrinsically sampled at some interval in time and frequency. Modern interferometers are capable of producing data at very high time and frequency...
View ArticleHR 8799: The Benchmark Directly-Imaged Planetary System
HR 8799 harbors arguably the first and best-studied directly-imaged planets. In this brief article, I describe how the HR 8799 planetary system is a benchmark system for studying the atmospheres,...
View ArticleSuperplot: a graphical interface for plotting and analysing MultiNest output...
We present an application, Superplot, for calculating and plotting statistical quantities relevant to parameter inference from a "chain" of samples drawn from a parameter space, produced by e.g....
View ArticleWISE x SuperCOSMOS photometric redshift catalog: 20 million galaxies over 3pi...
We cross-match the two currently largest all-sky photometric catalogs, mid-infrared WISE and SuperCOSMOS scans of UKST/POSS-II photographic plates, to obtain a new galaxy sample that covers 3pi...
View ArticleInference of Unresolved Point Sources At High Galactic Latitudes Using...
We construct a Bayesian framework to perform inference of dim or overlapping point sources. The method involves probabilistic cataloging, where samples are taken from the posterior probability...
View ArticleOptical Characterization of the BICEP3 CMB Polarimeter at the South Pole
BICEP3 is a small-aperture refracting cosmic microwave background (CMB) telescope designed to make sensitive polarization maps in pursuit of a potential B-mode signal from inflationary gravitational...
View ArticleOptimal Orderings of k-subsets for Star Identification [Cross-Listing]
Finding the optimal ordering of k-subsets with respect to an objective function is known to be an extremely challenging problem. In this paper we introduce a new objective for this task, rooted in the...
View ArticleCritical-angle x-ray transmission grating spectrometer with extended bandpass...
Several high priority subjects in astrophysics can be addressed by a state-of-the-art soft x-ray grating spectrometer (XGS). An Explorer-scale, large-area (> 1,000 cm2), high resolving power (R >...
View ArticleHigh-precision astrometry towards ELTs
With the aim of paving the road for future accurate astrometry with MICADO at the European-ELT, we performed an astrometric study using two different but complementary approaches to investigate two...
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