The Effect of Nearby Voids on Galaxy Number Counts
The size, shape and degree of emptiness of void interiors sheds light on the details of galaxy formation. A particularly interesting question is whether void interiors are completely empty or contain a...
View ArticleMechanical design and development of TES bolometer detector arrays for the...
The next generation Advanced ACTPol (AdvACT) experiment is currently underway and will consist of four Transition Edge Sensor (TES) bolometer arrays, with three operating together, totaling ~5800...
View ArticleA Hybrid Riemann Solver for Large Hyperbolic Systems of Conservation Laws...
We are interested in the numerical solution of large systems of hyperbolic conservation laws or systems in which the characteristic decomposition is expensive to compute. Solving such equations using...
View ArticleGain and Polarization Properties of a Large Radio Telescope from Calculation...
Measurement of the brightness temperature of extended radio emission demands knowledge of the gain (or aperture efficiency) of the telescope and measurement of the polarized component of the emission...
View ArticleApodized vortex coronagraph designs for segmented aperture telescopes
Current state-of-the-art high contrast imaging instruments take advantage of a number of elegant coronagraph designs to suppress starlight and image nearby faint objects, such as exoplanets and...
View ArticleMeasurements of gondola motion on a stratospheric balloon flight
Balloon experiments are an economically feasible method of conducting observations in astronomy that are not possible from the ground. The astronomical payload may include a telescope, a detector, and...
View ArticleFlexible focal plane arrays for UVOIR wide field instrumentation
LAM and CEA-LETI are developing the technology of deformable detectors, for UV, VIS or NIR applications. Such breakthrough devices will be a revolution for future wide field imagers and spectrographs,...
View ArticleHybrid Entropy Stable HLL-Type Riemann Solvers for Hyperbolic Conservation...
It is known that HLL-type schemes are more dissipative than schemes based on characteristic decompositions. However, HLL-type methods offer greater flexibility to large systems of hyperbolic...
View ArticleDevelopment of wide-field low-energy X-ray imaging detectors for HiZ-GUNDAM
We are planning a future gamma-ray burst (GRB) mission HiZ-GUNDAM to probe the early universe beyond the redshift of z > 7. Now we are developing a small prototype model of wide-field low-energy...
View ArticleThe Primordial Inflation Polarization Explorer (PIPER)
The Primordial Inflation Polarization ExploreR (PIPER) is a balloon-borne telescope designed to measure the polarization of the Cosmic Microwave Background on large angular scales. PIPER will map 85%...
View ArticleGammaLib and ctools: A software framework for the analysis of astronomical...
The field of gamma-ray astronomy has seen important progress during the last decade, yet there exists so far no common software framework for the scientific analysis of gamma-ray telescope data. We...
View ArticleAssessment of backgrounds of the ANAIS experiment for dark matter direct...
A large effort has been carried out to characterize the background of sodium iodide crystals within the ANAIS (Annual modulation with NaI Scintillators) project. In this paper, the background models...
View ArticleEnd-to-end simulations of the Visible Tunable Filter for the Daniel K. Inouye...
The Visible Tunable Filter (VTF) is a narrowband tunable filter system for imaging spectroscopy and spectropolarimetry based. The instrument will be one of the first-light instruments of the Daniel K....
View ArticleMethod to detect gravitational waves from an ensemble of known pulsars...
Combining information from weak sources, such as known pulsars, for gravitational wave detection, is an attractive approach to improve detection efficiency. We propose an optimal statistic for a...
View ArticleThe FLARE mission: Deep and Wide-field 1-5$\mu$m Imaging and Spectroscopy for...
FLARE (First Light And Reionization Explorer) is a space mission that will be submitted to ESA (M5 call). Its primary goal (about 80% of lifetime) is to identify and study galaxies that dwell in the...
View ArticleLo Gnomone Clementino Astronomia Meridiana in Basilica
The Clementine Gnomon realized in 1702 by the astronomer Francesco Bianchini (1661-1729) upon the will of Pope Clement XI (1700-1721) in the Basilica of Santa Maria degli Angeli in Rome is fully...
View ArticleHigh contrast imaging of exoplanets on ELTs using a super-Nyquist wavefront...
One of the key science goals for extremely large telescopes (ELTs) is the detailed characterization of already known directly imaged exoplanets. The typical adaptive optics (AO) Nyquist control region...
View ArticlePrecision velocimetry planet hunting with PARAS: Current performance and...
PARAS is a fiber-fed stabilized high-resolution cross-dispersed echelle spectrograph, located on the 1.2 m telescope in Mt. Abu India. Designed for exoplanet detection, PARAS is capable of single-shot...
View ArticleA Global Prospective of the Indian Optical and Near-Infrared Observational...
A review of modernization and growth of ground based optical and near-infrared astrophysical observational facilities in the globe attributed to the recent technological developments in optomechanical,...
View ArticleMethod to detect gravitational waves from an ensemble of known pulsars
Combining information from weak sources, such as known pulsars, for gravitational wave detection, is an attractive approach to improve detection efficiency. We propose an optimal statistic for a...
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