OIFITS 2: the 2nd version of the Data Exchange Standard for Optical...
This paper describes version 2 of the OI Exchange Format (OIFITS), the standard for exchanging calibrated data from optical (visible/infrared) interferometers. This IAU-endorsed standard has been in...
View ArticleMulti-frequency image reconstruction for radio interferometry. A regularized...
We describe a "spatio-spectral" deconvolution algorithm for wide-band imaging in radio interferometry. In contrast with the existing multi-frequency reconstruction algorithms, the proposed method does...
View ArticleDynamic temperature selection for parallel-tempering in Markov chain Monte...
Modern problems in astronomical Bayesian inference require efficient methods for sampling from complex, high-dimensional, often multi-modal probability distributions. Most popular methods, such as...
View ArticleHow well can we measure supermassive black hole spin?
Being one of only two fundamental properties black holes possess, the spin of supermassive black holes (SMBHs) is of great interest for understanding accretion processes and galaxy evolution. However,...
View ArticleSimulating Turbulence Using the Astrophysical Discontinuous Galerkin Code TENET
In astrophysics, the two main methods traditionally in use for solving the Euler equations of ideal fluid dynamics are smoothed particle hydrodynamics and finite volume discretization on a stationary...
View ArticleDistributed multi-frequency image reconstruction for radio-interferometry
The advent of enhanced technologies in radio interferometry and the perspective of the SKA telescope bring new challenges in image reconstruction. One of these challenges is the spatio-spectral...
View ArticleSubmillimeter Atmospheric Transparency at Maunakea, at the South Pole, and at...
For a systematic assessment of submillimeter observing conditions at different sites, we constructed tipping radiometers to measure the broad band atmospheric transparency in the window around 350...
View ArticleiPTF Search for an Optical Counterpart to Gravitational Wave Trigger GW150914
The intermediate Palomar Transient Factory (iPTF) autonomously responded to and promptly tiled the error region of the first gravitational wave event GW150914 to search for an optical counterpart. Only...
View ArticlePhotometric brown-dwarf classification. II. A homogeneous sample of 1361 L...
We present a homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 (of which 998 are new), from an effective area of 3070 deg2, classified by the photo-type method to an accuracy of one...
View ArticleHigh-precision timing of 42 millisecond pulsars with the European Pulsar...
We report on the high-precision timing of 42 radio millisecond pulsars (MSPs) observed by the European Pulsar Timing Array (EPTA). This EPTA Data Release 1.0 extends up to mid-2014 and baselines range...
View ArticleSOMBI: Bayesian identification of parameter relations in unstructured...
This work describes the implementation and application of a correlation determination method based on Self Organizing Maps and Bayesian Inference (SOMBI). SOMBI aims to automatically identify relations...
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 ArticleA targeted spectral interpolation algorithm for the detection of continuous...
We present an improved method of targeting continuous gravitationalwave signals in data from the LIGO and Virgo detectors with a higher efficiency than the time-domain Bayesian pipeline used in many...
View ArticleCalibration of Radio Interferometers Using a Sparse DoA Estimation Framework
The calibration of modern radio interferometers is a significant challenge, specifically at low frequencies. In this perspective, we propose a novel iterative calibration algorithm, which employs the...
View ArticleThe data processing pipeline for the Herschel SPIRE Fourier Transform...
We present the data processing pipeline to generate calibrated data products from the Spectral and Photometric Imaging Receiver (SPIRE) imaging Fourier Transform Spectrometer on the Herschel Space...
View ArticleA targeted spectral interpolation algorithm for the detection of continuous...
We present an improved method of targeting continuous gravitationalwave signals in data from the LIGO and Virgo detectors with a higher efficiency than the time-domain Bayesian pipeline used in many...
View ArticleNon-random structures in universal compression and the Fermi paradox
We study the hypothesis of information panspermia assigned recently among possible solutions of the Fermi paradox ("where are the aliens?"). It suggests that the expenses of alien signaling can be...
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 ArticleGONG ClassicMerge: Pipeline and Product
A recent processing effort has been undertaken in order to extend the range-of-coverage of the GONG merged dopplergrams. The GONG-Classic-era observations have now been merged to provide, albeit at...
View ArticleThe advantages of using a Lucky Imaging camera for observations of...
In this work, we study the advantages of using a Lucky Imaging camera for the observations of potential planetary microlensing events. Our aim is to reduce the blending effect and enhance exoplanet...
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