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Channel: Instrumentation and Methods – Vox Charta
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Limits on momentum-dependent asymmetric dark matter with CRESST-II

The usual assumption in direct dark matter searches is to only consider the spin-dependent or spin-independent scattering of dark matter particles. However, especially in models with light dark matter...

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Real-Time Data Mining of Massive Data Streams from Synoptic Sky Surveys

The nature of scientific and technological data collection is evolving rapidly: data volumes and rates grow exponentially, with increasing complexity and information content, and there has been a...

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Coherence loss in stroboscopic radar ranging in the problem of asteroid size...

We consider the problem of coherence loss in a stroboscopic high resolution radar ranging due to phase instability of the probing and reference radio signals. Requirements to the coherence of reference...

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Calibration of mixed-polarization interferometric observations

Heterodyne receivers register the sky signal on either a circular polarization basis (where it is split into left-hand and right-hand circular polarization) or a linear polarization basis (where it is...

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Million-Body Star Cluster Simulations: Comparisons between Monte Carlo and...

We present the first detailed comparison between million-body globular cluster simulations computed with a H\'enon-type Monte Carlo code, CMC, and a direct $N$-body code, NBODY6++GPU. Both simulations...

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An Overview of the SKA Science Analysis Pipeline

When completed the Square Kilometre Array (SKA) will feature an unprecedented rate of image generation. While previous generations of telescopes have relied on human expertise to extract scientifically...

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Multi-Source Self-Calibration: Unveiling the microJy Population of Compact...

Context. Very Long Baseline Interferometry (VLBI) data are extremely sensitive to the phase stability of the VLBI array. This is especially important when we reach {\mu}Jy r.m.s. sensitivities....

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Seismic isolation of Advanced LIGO: Review of strategy, instrumentation and...

Isolating ground-based interferometric gravitational wave observatories from environmental disturbances is one of the great challenges of the advanced detector era. In order to directly observe...

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Auto-Tuning Dedispersion for Many-Core Accelerators [Cross-Listing]

In this paper, we study the parallelization of the dedispersion algorithm on many-core accelerators, including GPUs from AMD and NVIDIA, and the Intel Xeon Phi. An important contribution is the...

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The CDF Archive: Herschel PACS and SPIRE Spectroscopic Data Pipeline and...

We present the COPS-DIGIT-FOOSH (CDF) Herschel spectroscopy data product archive, and related ancillary data products, along with data fidelity assessments, and a user-created archive in collaboration...

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Observational calibration of the projection factor of Cepheids. II....

The distance to pulsating stars is classically estimated using the parallax-of-pulsation (PoP) method, which combines spectroscopic radial velocity measurements and angular diameter estimates to derive...

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Optical tracking of deep-space spacecraft in Halo L2 orbits and beyond: the...

We tackle the problem of accurate optical tracking of distant man-made probes, on Halo orbit around the Earth-Sun libration point L2 and beyond, along interplanetary transfers. The improved performance...

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Calibration of mixed-polarization interferometric observations [Replacement]

Heterodyne receivers register the sky signal on either a circular polarization basis (where it is split into left-hand and right-hand circular polarization) or a linear polarization basis (where it is...

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Odyssey: A Public GPU-Based Code for General-Relativistic Radiative Transfer...

General-relativistic radiative transfer (GRRT) calculations coupled with the calculation of geodesics in the Kerr spacetime are an essential tool for determining the images, spectra and light curves...

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The noise properties of 42 millisecond pulsars from the European Pulsar...

The sensitivity of Pulsar Timing Arrays to gravitational waves depends on the noise present in the individual pulsar timing data. Noise may be either intrinsic or extrinsic to the pulsar. Intrinsic...

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Maximum Likelihood Foreground Cleaning for Cosmic Microwave Background...

We extend a general maximum likelihood foreground estimation for cosmic microwave background polarization data to include estimation of instrumental systematic effects. We focus on two particular...

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How to measure metallicity from five-band photometry with supervised machine...

We demonstrate that it is possible to measure metallicity from the SDSS five-band photometry to better than 0.1 dex using supervised machine learning algorithms. Using spectroscopic estimates of...

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Solar energetic particle events: trajectory analysis and flux reconstruction...

The PAMELA satellite experiment is providing first direct measurements of Solar Energetic Particles (SEPs) with energies from about 80 MeV to several GeV in near-Earth space, bridging the low energy...

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Optimal binning of X-ray spectra and response matrix design

A theoretical framework is developed to estimate the optimal binning of X-ray spectra. We derived expressions for the optimal bin size for model spectra as well as for observed data using different...

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Random sub-Nyquist polarimetric modulator

We show that it is possible to measure polarization with a polarimeter that gets rid of the seeing while still measuring at a frequency well below that of the seeing. We study a standard polarimeter...

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