Attenuation of vacuum ultraviolet light in liquid argon [Cross-Listing]
The transmission of liquid argon has been measured, wavelength resolved, for a wavelength interval from 118 to 250 nm. The wavelength dependent attenuation length is presented for pure argon. It is...
View ArticleIntense Vacuum-Ultraviolet and Infrared Scintillation of Liquid Ar-Xe...
Vacuum ultraviolet light emission from xenon-doped liquid argon is described in the context of liquid noble gas particle detectors. Xenon concentrations in liquid argon from 0.1 ppm to 1000 ppm were...
View ArticleIntense Infrared Scintillation of Liquid Ar-Xe Mixtures [Cross-Listing]
Intense infrared (IR) light emission from liquid Ar-Xe mixtures has been observed using 12 keV electron-beam excitation. The emission peaks at a wavelength of 1.18 $\mu$m and the half-width of the...
View ArticleIon-beam excitation of liquid argon [Cross-Listing]
The scintillation light of liquid argon has been recorded wavelength and time resolved with very good statistics in a wavelength interval ranging from 118 nm through 970 nm. Three different ion beams,...
View ArticleTable-top setup for investigating the scintillation properties of liquid...
The spectral and temporal light emission properties of liquid argon have been studied in the context of its use in large liquid rare-gas detectors for detecting Dark Matter particles in astronomy. A...
View ArticleThe scintillation of liquid argon [Cross-Listing]
A spectroscopic study of liquid argon from the vacuum ultraviolet at 110 nm to 1000 nm is presented. Excitation was performed using continuous and pulsed 12 keV electron beams. The emission is...
View ArticleDetection Efficiency of Asteroid Surveys
A comprehensive characterization of the detection efficiency of nine of the major asteroid surveys which have been active over the past two decades is presented. The detection efficiency is estimated...
View ArticleFast and dynamically reliable symplectic integration for solar system N-body...
We apply one of the exactly symplectic integrators, that we call HB15, of \cite{HB15} to solve solar system $N$-body problems. We compare the method to Wisdom-Holman methods (WH), MERCURY, and others...
View ArticleRadial velocity information content of M dwarf spectra in the near-infrared
Aims: We evaluate the radial velocity (RV) information content and achievable precision on M0-M9 spectra covering the ZYJHK bands. We do so while considering both a perfect atmospheric transmission...
View ArticleGeometrical on-the-fly shock detection in SPH
We present an on-the-fly geometrical approach for shock detection and Mach number calculation in simulations employing smoothed particle hydrodynamics (SPH). We utilize pressure gradients to select...
View ArticleThe ICRF-3: Status, plans, and progress on the next generation International...
The goal of this presentation is to report the latest progress in creation of the next generation of VLBI-based International Celestial Reference Frame, ICRF3. Two main directions of ICRF3 development...
View ArticleThe Araucaria Project: High-precision orbital parallax and masses of the...
Context: Independent distance estimates are particularly useful to check the precision of other distance indicators, while accurate and precise masses are necessary to constrain evolution models. Aim:...
View ArticleSOLARPROP: Charge-sign Dependent Solar Modulation for Everyone
We present SOLARPROP, a tool to compute the influence of charge-sign dependent solar modulation for cosmic ray spectra. SOLARPROP is able to use the output of popular tools like GALPROP or DRAGON and...
View ArticleGravitational-Wave Detection and Astrophysics with Pulsar Timing Arrays
We have begun an exciting era for gravitational wave detection, as several world-leading experiments are breaching the threshold of anticipated signal strengths. Pulsar timing arrays (PTAs) are...
View ArticleDevelopment of superconducting Klystron cavity for the Mario Schenberg...
Superconducting reentrant cavities can be used in parametric transducers for Gravitational Wave antennas. The Mario Schenberg detector, which is being built by the GRAVITON group at Instituto Nacional...
View ArticleA GPU accelerated Barnes-Hut Tree Code for FLASH4 [Replacement]
We present a GPU accelerated CUDA-C implementation of the Barnes Hut (BH) tree code for calculating the gravitational potential on octree adaptive meshes. The tree code algorithm is implemented within...
View ArticleComparison of Four Space Propulsion Methods for Reducing Transfer Times of...
We assess the possibility of reducing the travel time of a manned mission to Mars by examining four different propulsion methods, and keeping the mass at departure under 2,500 tonnes, for a fixed...
View ArticleOn the feasibility of RADAR detection of high-energy cosmic neutrinos
We discuss the radar detection technique as a probe for high-energy cosmic neutrino induced particle cascades in a dense medium like ice. With the recent detection of high-energy cosmic neutrinos by...
View ArticleTurning noise into signal: learning from the scatter in the Hubble diagram
The supernova Hubble diagram residual contains valuable information on both the present matter power spectrum and its growth history. In this paper we show that this information can be retrieved with...
View ArticleSpectroradiometry with Space Telescopes
Radiometry has been of fundamental importance in astronomy from the early beginnings. Initially, astronomers had their own radiometric system, based on extraterrestrial standards, namely the irradiance...
View Article