Enabling science with Gaia observations of naked-eye stars
ESA's Gaia space astrometry mission is performing an all-sky survey of stellar objects. At the beginning of the nominal mission in July 2014, an operation scheme was adopted that enabled Gaia to...
View ArticleLOTUS: A low cost, ultraviolet spectrograph
We describe the design, construction and commissioning of LOTUS; a simple, low-cost long-slit spectrograph for the Liverpool Telescope. The design is optimized for near-UV and visible wavelengths and...
View ArticleA Mach-Zehnder interferometer based on orbital angular momentum for improved...
The Annular Groove Phase Mask (AGPM) is a vectorial vortex phase mask. It acts as a half-wave plate with a radial fast axis orientation operating in the mid infrared domain. When placed at the focus of...
View ArticleAn Extension of Godunov SPH II: Application to Elastic Dynamics [Replacement]
Godunov Smoothed Particle Hydrodynamics (Godunov SPH) method is a computational fluid dynamics method that utilizes a Riemann solver and achieves the second-order accuracy in space. In this paper, we...
View ArticleMIMAC low energy electron-recoil discrimination measured with fast neutrons...
MIMAC (MIcro-TPC MAtrix of Chambers) is a directional WIMP Dark Matter detector project. Direct dark matter experiments need a high level of electron/recoil discrimination to search for nuclear recoils...
View ArticleA comparison between grid and particle methods on the small-scale dynamo in...
We perform a comparison between the smoothed particle magnetohydrodynamics (SPMHD) code, Phantom, and the Eulerian grid-based code, Flash, on the small-scale turbulent dynamo in driven, Mach 10...
View ArticleThe NIKA2 commissioning campaign: performance and first results
The New IRAM KID Array 2 (NIKA 2) is a dual-band camera operating with three frequency-multiplexed kilopixels arrays of Lumped Element Kinetic Inductance Detectors (LEKID) cooled at 150 mK. NIKA 2 is...
View ArticleProper motions of 15 pulsars: a comparison between Bayesian and frequentist...
We present proper motions for 15 pulsars which are observed regularly by the Nanshan 25-m radio telescope. Two methods, the frequentist method (Coles et al.2011) and the Bayesian (Lentati et al. 2014)...
View ArticleLaboratory validation of the dual-zone phase mask coronagraph in broadband...
Specific high contrast imaging instruments are mandatory to characterize circumstellar disks and exoplanets around nearby stars. Coronagraphs are commonly used in these facilities to reject the...
View ArticleThe NIKA2 commissioning campaign: performance and first results [Replacement]
The New IRAM KID Array 2 (NIKA 2) is a dual-band camera operating with three frequency-multiplexed kilopixels arrays of Lumped Element Kinetic Inductance Detectors (LEKID) cooled at 150 mK. NIKA 2 is...
View ArticleFaster GPU-based convolutional gridding via thread coarsening [Replacement]
Convolutional gridding is a processor-intensive step in interferometric imaging. While it is possible to use graphics processing units (GPUs) to accelerate this operation, existing methods use only a...
View ArticleExoData: A python package to handle large exoplanet catalogue data [Replacement]
Exoplanet science often involves using the system parameters of real exoplanets for tasks such as simulations, fitting routines, and target selection for proposals. Several exoplanet catalogues are...
View ArticleA new polarisation amplitude bias reduction method [Replacement]
Polarisation amplitude estimation is affected by a positive noise bias, particularly important in regions with low signal-to-noise ratio (SNR). We present a new approach to correct for this bias in the...
View ArticleGrayStarServer: Server-side spectrum synthesis with a browser-based...
I present GrayStarServer (GSS), a stellar atmospheric modeling and spectrum synthesis code of pedagogical accuracy that is accessible in any web browser on commonplace computational devices and that...
View ArticleThe Latin American Giant Observatory: a successful collaboration in Latin...
In this work the strategy of the Latin American Giant Observatory (LAGO) to build a Latin American collaboration is presented. Installing Cosmic Rays detectors settled all around the Continent, from...
View ArticleGAVIP: A Platform for Gaia Data Analysis
Gaia is a major European Space Agency (ESA) astrophysics mission designed to map and analyse 10$^9$ stars, ultimately generating more than 1 PetaByte of data products. As Gaia data becomes publicly...
View ArticleDevelopment of SED Camera for Quasars in Early Universe (SQUEAN)
We describe the characteristics and performance of a camera system, Spectral energy distribution Camera for Quasars in Early Universe (SQUEAN). It was developed to measure SEDs of high redshift quasar...
View ArticleAMiBA: Cluster Sunyaev-Zel’dovich Effect Observations with the Expanded...
The Yuan-Tseh Lee Array for Microwave Background Anisotropy (AMiBA) is a co-planar interferometer array operating at a wavelength of 3mm to measure the Sunyaev-Zeldovich effect (SZE) of galaxy...
View ArticleFine tuning consensus optimization for distributed radio interferometric...
We recently proposed the use of consensus optimization as a viable and effective way to improve the quality of calibration of radio interferometric data. We showed that it is possible to obtain far...
View ArticleRPC application in muography and specific developments [Cross-Listing]
Muography is an imaging technique for large and dense structures as volcanoes or nuclear reactors using atmospheric muons. We applied this technique to the observation of the Puy de D\^ome, a volcano 2...
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