Proposed low-energy absolute calibration of nuclear recoils in a dual-phase...
We propose a new technique for the calibration of nuclear recoils in large noble element dual-phase time projection chambers used to search for WIMP dark matter in the local galactic halo. This...
View ArticleDetectors and cooling technology for direct spectroscopic biosignature...
Direct spectroscopic biosignature characterization (hereafter "biosignature characterization") will be a major focus for future space observatories equipped with coronagraphs or starshades. Our aim in...
View ArticleComparing cosmic web classifiers using information theory [Replacement]
We introduce a decision scheme for optimally choosing a classifier, which segments the cosmic web into different structure types (voids, sheets, filaments, and clusters). Our framework, based on...
View ArticleSOAR Adaptive Module (SAM): seeing improvement with a UV laser
The adaptive module of the 4.1-m SOAR telescope, SAM, corrects ground-layer turbulence using a UV laser guide star. It has been commissioned in 2013 and it is in regular science operation since 2014....
View ArticleInstrumental performance and results from testing of the BLAST-TNG receiver,...
Polarized thermal emission from interstellar dust grains can be used to map magnetic fields in star forming molecular clouds and the diffuse interstellar medium (ISM). The Balloon-borne Large Aperture...
View ArticlePhotometric classification of type Ia supernovae in the SuperNova Legacy...
In the era of large astronomical surveys, photometric classification of supernovae (SNe) has become an important research field due to limited spectroscopic resources for candidate follow-up and...
View ArticleGaia: focus, straylight and basic angle [Replacement]
The Gaia all-sky astrometric survey is challenged by several issues affecting the spacecraft stability. Amongst them, we find the focus evolution, straylight and basic angle variations Contrary to...
View ArticleFrequentist model comparison tests of sinusoidal variations in measurements...
Anderson et al have claimed to find evidence for periodic sinusoidal variations (period=5.9 years) in measurements of Newton's Gravitational constant. These claims have been disputed by Pitkin. Using...
View ArticleA Custom Support Vector Machine Analysis of the Efficacy of Galaxy Shape...
Aims: We present a custom support vector machine classification package for photometric redshift estimation, including comparisons with other methods. We also explore the efficacy of the inclusion of...
View ArticleSpin-SILC: CMB polarisation component separation with spin wavelets...
We present Spin-SILC, a new foreground component separation method that accurately extracts the cosmic microwave background (CMB) polarisation $E$ and $B$ modes from raw multifrequency Stokes $Q$ and...
View ArticleObserving gravitational-wave transient GW150914 with minimal assumptions...
The gravitational-wave signal GW150914 was first identified on Sept 14 2015 by searches for short-duration gravitational-wave transients. These searches identify time-correlated transients in multiple...
View ArticleSystematic effects from an ambient-temperature, continuously-rotating...
We present an evaluation of systematic effects associated with a continuously-rotating, ambient-temperature half-wave plate (HWP) based on two seasons of data from the Atacama B-Mode Search (ABS)...
View ArticleSingle-Source Gravitational Wave Limits from the J1713+0747 24-hr Global...
Dense, continuous pulsar timing observations over a 24-hr period provide a method for probing intermediate gravitational wave (GW) frequencies from 10 microhertz to 20 millihertz. The European Pulsar...
View ArticleICE: a scalable, low-cost FPGA-based telescope signal processing and...
We present an overview of the 'ICE' hardware and software framework that implements large arrays of interconnected FPGA-based data acquisition, signal processing and networking nodes economically. The...
View ArticleLarge Observatory for x-ray Timing (LOFT-P): A Probe-classs Mission Concept...
LOFT-P is a concept for a NASA Astrophysics Probe-Class (<$1B) X-ray timing mission, based on the LOFT concept originally proposed to ESAs M3 and M4 calls. LOFT-P requires very large collecting area...
View ArticleThe Remote Observatories of the Southeastern Association for Research in...
We describe the remote facilities operated by the Southeastern Association for Research in Astronomy (SARA), a consortium of colleges and universities in the US partnered with Lowell Observatory, the...
View ArticleStudy of Distortions in Statistics of Counts in CCD Observations using the...
Factors distorting the statistics of photocounts when acquiring objects with low fluxes were considered here. Measurements of the Fano factor for existing CCD systems were conducted. The study allows...
View ArticleA High Resolution Spectrograph for the 72 cm Waltz Telescope at...
The Waltz Spectrograph is a fiber-fed high-resolution \'echelle spectrograph for the 72 cm Waltz Telescope at the Landessternwarte, Heidelberg. It uses a 31.6 lines/mm 63.5$^{\circ}$ blaze angle...
View ArticleAstroSat – a multi-wavelength astronomy satellite
AstroSat is a multi-wavelength astronomy satellite, launched on 2015 September 28. It carries a suite of scientific instruments for multi-wavelength observations of astronomical sources. It is a major...
View ArticleCharged Particle Monitor on the AstroSat mission
Charged Particle Monitor (CPM) on-board the AstroSat satellite is an instrument designed to detect the flux of charged particles at the satellite location. A Cesium Iodide Thallium (CsI(Tl)) crystal is...
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