SRAO: optical design and the dual-knife-edge WFS
The Southern Robotic Adaptive Optics (SRAO) instrument will bring the proven high-efficiency capabilities of Robo-AO to the Southern-Hemisphere, providing the unique capability to image with...
View ArticlePlanet Formation Imager (PFI): science vision and key requirements
The Planet Formation Imager (PFI) project aims to provide a strong scientific vision for ground-based optical astronomy beyond the upcoming generation of Extremely Large Telescopes. We make the case...
View ArticleSearch for low-mass WIMPs in a 0.6 kg day exposure of the DAMIC experiment at...
We present results of a dark matter search performed with a 0.6 kg day exposure of the DAMIC experiment at the SNOLAB underground laboratory. We measured the energy spectrum of ionization events in the...
View ArticlePYESSENCE – Generalised Coupled Quintessence Linear Perturbation Python Code...
This paper is a guide to the installation and use of the Python package PYESSENCE. PYESSENCE is designed to evolve linear perturbations to Coupled Quintessence models with a arbitrary number of cold...
View ArticleSearch for low-mass WIMPs in a 0.6 kg day exposure of the DAMIC experiment at...
We present results of a dark matter search performed with a 0.6 kg day exposure of the DAMIC experiment at the SNOLAB underground laboratory. We measured the energy spectrum of ionization events in the...
View ArticleMeasurement of the ionization produced by sub-keV silicon nuclear recoils in...
We report a measurement of the ionization efficiency of silicon nuclei recoiling with sub-keV kinetic energy in the bulk silicon of a charge-coupled device (CCD). Nuclear recoils were produced by...
View ArticleMeasurement of the ionization produced by sub-keV silicon nuclear recoils in...
We report a measurement of the ionization efficiency of silicon nuclei recoiling with sub-keV kinetic energy in the bulk silicon of a charge-coupled device (CCD). Nuclear recoils were produced by...
View ArticleA reanalysis of radioisotope measurements of the $^9$Be$(\gamma,n)^8$Be...
The $^9$Be$(\gamma,n)^8$Be reaction is enhanced by a near threshold $1/2^+$ state. Contradictions between existing measurements of this reaction cross-section affect calculations of astrophysical...
View ArticleNuclear Data for Astrophysical Modeling [Cross-Listing]
Nuclear physics has been playing an important role in modern astrophysics and cosmology. Since the early 1950's it has been successfully applied for the interpretation and prediction of astrophysical...
View ArticlePYESSENCE – Generalised Coupled Quintessence Linear Perturbation Python Code...
This paper is a guide to the installation and use of the Python package PYESSENCE. PYESSENCE is designed to evolve linear perturbations to Coupled Quintessence models with a arbitrary number of cold...
View ArticleLow frequency observations of linearly polarized structures in the...
We present deep polarimetric observations at 154 MHz with the Murchison Widefield Array (MWA), covering 625 deg^2 centered on RA=0 h, Dec=-27 deg. The sensitivity available in our deep observations...
View ArticleMulti-region relaxed Hall magnetohydrodynamics with flow [Replacement]
The recent formulations of multi-region relaxed magnetohydrodynamics (MRxMHD) have generalized the famous Woltjer-Taylor states by incorporating a collection of "ideal barriers" that prevent global...
View ArticleSUBARU prime focus spectrograph: integration, testing and performance for the...
The Prime Focus Spectrograph (PFS) of the Subaru Measurement of Images and Redshifts (SuMIRe) project for Subaru telescope consists in four identical spectrographs fed by 600 fibers each. Each...
View ArticleCosmic ray physics with ARGO-YBJ
The ARGO--YBJ experiment has been in stable data taking for more than five years at the Yangbajing cosmic ray observatory (Tibet, P.R. China, 4300 m a.s.l.). The detector collected about...
View ArticleVisible camera cryostat design and performance for the SuMIRe Prime Focus...
We describe the design and performance of the SuMIRe Prime Focus Spectrograph (PFS) visible camera cryostats. SuMIRe PFS is a massively multi-plexed ground-based spectrograph consisting of four...
View ArticleThe survey operation software system development for Prime Focus Spectrograph...
The Prime Focus Spectrograph (PFS) is a wide-field, multi-object spectrograph accommodating 2394 fibers to observe the sky at the prime focus of the Subaru telescope. The software system to operate a...
View ArticleA Novel Reflectometer for Relative Reflectance Measurements of CCDs
The high quantum efficiencies (QE) of backside illuminated charge coupled devices (CCD) has ushered in the age of the large scale astronomical survey. The QE of these devices can be greater than 90 %,...
View ArticleAdaptive optics for high resolution spectroscopy: A direct application with...
Radial velocity instruments require high spectral resolution and extreme thermo-mecanical stability, even more difficult to achieve in near-infra red (NIR) where the spectrograph has to be cooled down....
View ArticlePrime Focus Spectrograph (PFS) for the Subaru Telescope: Overview, recent...
PFS (Prime Focus Spectrograph), a next generation facility instrument on the 8.2-meter Subaru Telescope, is a very wide-field, massively multiplexed, optical and near-infrared spectrograph. Exploiting...
View ArticleIn-orbit Performance of UVIT on ASTROSAT
We present the in-orbit performance and the first results from the ultra-violet Imaging telescope (UVIT) on ASTROSAT. UVIT consists of two identical 38cm coaligned telescopes, one for the FUV channel...
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