Simulation of the In-flight Background for HXMT/HE
The Hard X-ray Modulation Telescope (HXMT) is a broad band X-ray astronomical satellite from 1 to 250 keV. Understanding the X-ray background in detail will help to achieve a good performance of the...
View ArticleA search for Fast Radio Bursts at low frequencies with Murchison Widefield...
We present the results of a pilot study search for Fast Radio Bursts (FRBs) using the Murchison Widefield Array (MWA) at low frequencies (139 - 170 MHz). We utilised MWA data obtained in a routine...
View ArticleMagellan Adaptive Optics first-light observations of the exoplanet beta Pic...
Young giant exoplanets are a unique laboratory for understanding cool, low-gravity atmospheres. A quintessential example is the massive extrasolar planet $\beta$ Pic b, which is 9 AU from and embedded...
View ArticleWFIRST-AFTA Coronagraph Science Yield Modeling with EXOSIMS
We present and discuss the design details of an extensible, modular, open source software framework called EXOSIMS, which creates end-to-end simulations of space-based exoplanet imaging missions. We...
View Article‘Modal-noise’ in single-mode fibers: A cautionary note for high precision...
Exploring the use of single-mode fibers (SMFs) in high precision Doppler spectrometers has become increasingly attractive since the advent of diffraction-limited adaptive optics systems on...
View ArticleA Response to Elvis’ 2015 Critique of the AURA Report "From Cosmic Birth to...
To ensure progress in astronomy over the coming decades, the key questions are "what facilities will we build, and when?" Toward this end, the Association of Universities for Research in Astronomy...
View ArticleSupercal: Cross-Calibration of Multiple Photometric Systems to Improve...
Current cosmological analyses which use Type Ia supernova (SN Ia) observations combine SN samples to expand the redshift range beyond that of a single sample and increase the overall sample size. The...
View ArticleA polyphase filter for many-core architectures
In this article we discuss our implementation of a polyphase filter for real-time data processing in radio astronomy. We describe in detail our implementation of the polyphase filter algorithm and its...
View ArticleConsiderations on the microwave radiation emitted by extended air showers
The emission of microwave radiation by extended air showers produced by high energy cosmic rays has been investigated for more than half a century. We discuss the expected emitted power as a function...
View ArticleSIDRA: a blind algorithm for signal detection in photometric surveys
We present the Signal Detection using Random-Forest Algorithm (SIDRA). SIDRA is a detection and classification algorithm based on the Machine Learning technique (Random Forest). The goal of this paper...
View ArticleCrowdsourcing quality control for Dark Energy Survey images
We have developed a crowdsourcing web application for image quality control employed by the Dark Energy Survey. Dubbed the "DES exposure checker", it renders science-grade images directly to a web...
View ArticleGAMMA-400 gamma-ray observatory [Replacement]
The GAMMA-400 gamma-ray telescope with excellent angular and energy resolutions is designed to search for signatures of dark matter in the fluxes of gamma-ray emission and electrons + positrons....
View ArticleModeling atmospheric emission for CMB ground-based observations [Replacement]
Atmosphere is one of the most important noise sources for ground-based cosmic microwave background (CMB) experiments. By increasing optical loading on the detectors, it amplifies their effective noise,...
View ArticleFirst light of the VLT planet finder SPHERE – II. The physical properties and...
[Abridged] Context. The young systems PZ Tel and HD 1160, hosting known low-mass companions, were observed during the commissioning of the new planet finder SPHERE with several imaging and...
View ArticleObserving the polarisation pattern of Saturn using CARMA
We observe Saturn and its ring system at wavelengths of 1.3 mm (220 GHz) using the Combined Array for Research in Millimeter-wave Astronomy (CARMA) interferometric array. We study the intensity and...
View ArticleReduction of CCD observations made with a scanning Fabry–Perot...
We describe the recent modifications to the data reduction technique for observations acquired with the scanning Fabry-Perot interferometer (FPI) mounted on the 6-m telescope of the Special...
View ArticleExtreme Contrast Ratio Imaging of Sirius with a Charge Injection Device
The next fundamental steps forward in understanding our place in the universe could be a result of advances in extreme contrast ratio (ECR) imaging and point spread function (PSF) suppression. For...
View ArticleEstimating SI violation in CMB due to non-circular beam and complex scan in...
Mild, unavoidable deviations from circular-symmetry of instrumental beams along with scan strategy can give rise to measurable Statistical Isotropy (SI) violation in Cosmic Microwave Background (CMB)...
View ArticleThe capabilities and performance of the Automated Planet Finder Telescope...
We report initial performance results emerging from 600 hours of observations with the Automated Planet Finder (APF) telescope and Levy Spectrometer located at UCO/Lick Observatory. We have obtained...
View ArticleFirst light of the VLT planet finder SPHERE. II. The physical properties and...
[Abridged] Context. The young systems PZ Tel and HD 1160, hosting known low-mass companions, were observed during the commissioning of the new planet finder SPHERE with several imaging and...
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