Retrieval of Precise Radial Velocities from Near-Infrared High Resolution...
Given that low-mass stars have intrinsically low luminosities at optical wavelengths and a propensity for stellar activity, it is advantageous for radial velocity (RV) surveys of these objects to use...
View ArticleThe LOFAR Solar Imaging Pipeline and the LOFAR Solar Data Center
LOFAR is a new and sensitive radio interferometer that can be used for dynamic high-resolution imaging spectroscopy at low radio frequencies from 10 to 90 and 110 to 250 MHz. Here we describe its usage...
View ArticleBICEP2 / Keck Array VII: Matrix based E/B Separation applied to BICEP2 and...
A linear polarization field on the sphere can be uniquely decomposed into an E-mode and a B-mode component. These two components are analytically defined in terms of spin-2 spherical harmonics. Maps...
View ArticleTransition radiation at radio frequencies from ultra-high energy...
Coherent radiation at radio frequencies from high-energy showers fully contained in a dense radio-transparent medium - like ice, salt or regolith - has been extensively investigated as a promising...
View ArticleSPAMCART: a code for smoothed particle Monte Carlo radiative transfer...
We present a code for generating synthetic SEDs and intensity maps from Smoothed Particle Hydrodynamics simulation snapshots. The code is based on the Lucy (1999) Monte Carlo Radiative Transfer method,...
View ArticleResolution enhancement by extrapolation of coherent diffraction images: A...
In coherent diffractive imaging (CDI) the resolution of the reconstructed object is limited by the numerical aperture of the experimental setup. We present here a theoretical and numerical study for...
View ArticleQuantum Simulations of Nuclei and Nuclear Pasta with the Multi-resolution...
Neutron star and supernova matter at densities just below the nuclear matter saturation density is expected to form a lattice of exotic shapes. These so-called nuclear pasta phases are caused by...
View ArticleMeasurement of 1.7 to 74 MeV polarised gamma rays with the HARPO TPC...
Current {\gamma}-ray telescopes based on photon conversions to electron-positron pairs, such as Fermi, use tungsten converters. They suffer of limited angular resolution at low energies, and their...
View ArticleGrid Noise in Moving Mesh Codes: Fixing The Volume Inconsistency Problem...
Current Voronoi based moving mesh hydro codes suffer from "grid noise". We identify the cause of this noise as the volume inconsistency error, where the volume that is transferred between cells is...
View ArticleXMM-Newton Slew Survey observations of the gravitational wave event GW150914
The detection of the first gravitational wave (GW) transient GW150914 prompted an extensive campaign of follow-up observations at all wavelengths. Although no dedicated XMM-Newton observations have...
View ArticleMeasurement of 1.7 to 74 MeV polarised gamma rays with the HARPO TPC...
Current {\gamma}-ray telescopes based on photon conversions to electron-positron pairs, such as Fermi, use tungsten converters. They suffer of limited angular resolution at low energies, and their...
View Article$K$-corrections: an Examination of their Contribution to the Uncertainty of...
In this paper we provide formulae that can be used to determine the uncertainty contributed to a measurement by a $K$-correction and, thus, valuable information about which flux measurement will...
View ArticleCRPropa 3 – a Public Astrophysical Simulation Framework for Propagating...
We present the simulation framework CRPropa version 3 designed for efficient development of astrophysical predictions for ultra-high energy particles. Users can assemble modules of the most relevant...
View ArticleExcitation and charge transfer in low-energy hydrogen atom collisions with...
A theoretical method for the estimation of cross sections and rates for excitation and charge transfer processes in low-energy hydrogen atom collisions with neutral atoms, based on an asymptotic...
View ArticleAn Adaptive Homomorphic Aperture Photometry Algorithm for Merging Galaxies
We present a novel automatic adaptive aperture photometry algorithm for measuring the total magnitudes of merging galaxies with irregular shapes. First, we use a morphological pattern recognition...
View ArticlePRECL: A new method for interferometry imaging from closure phase
For short-wavelength VLBI observations, it is difficult to measure the phase of the visibility function accurately. The closure phases are reliable measurements under this situation, though it is not...
View ArticleHASH: the Hong Kong/AAO/Strasbourg H-alpha planetary nebula database
By incorporating our major recent discoveries with re-measured and verified contents of existing catalogues we provide, for the first time, an accessible, reliable, on-line SQL database for essential,...
View ArticleSearching for electromagnetic counterpart of LIGO gravitational waves in the...
The Fermi collaboration identified a possible electromagnetic counterpart of the GW event of September 14, 2015. Our goal is to work out an unsupervised data analysis algorithm to identify similar...
View ArticleVariability induced motion in Kepler data
Variability induced motion (VIM) is an observable effect in simultaneous astrometric and photometric measurements caused by brightness variation in one of the components of a double source or blended...
View ArticleExcitation and charge transfer in low-energy hydrogen atom collisions with...
A theoretical method for the estimation of cross sections and rates for excitation and charge transfer processes in low-energy hydrogen atom collisions with neutral atoms, based on an asymptotic...
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