Limits on the validity of the thin-layer model of the ionosphere for radio...
For a ground-based radio interferometer observing at low frequencies, the ionosphere causes propagation delays and refraction of cosmic radio waves which result in phase errors in the received signal....
View ArticleA Broadband Micro-machined Far-Infrared Absorber
The experimental investigation of a broadband far-infrared meta-material absorber is described. The observed absorptance is $>\,0.95$ from ${\rm 1-20\,THz}$ (${\rm 300-15\,\mu m}$) over a...
View ArticleThe 154 MHz radio sky observed by the Murchison Widefield Array: noise,...
We analyse a 154 MHz image made from a 12 h observation with the Murchison Widefield Array (MWA) to determine the noise contribution and behaviour of the source counts down to 30 mJy. The MWA image has...
View ArticleHow different are the Li\`ege and Hamburg atlases of the solar spectrum?
Context: The high-fidelity solar spectral atlas prepared by Delbouille and co-workers (Li\`ege atlas), and the one by Neckel and co-workers (Hamburg atlas), are widely recognised as the most important...
View ArticleA new concept of a high-energy space-based cosmic ray telescope
Cosmic ray science has proved to be a very active field, with several important results from recent space-based instruments. Next generation experiments will explore the multi-TeV energy range, trying...
View ArticleThe Pierre Auger Observatory Upgrade – Preliminary Design Report
The Pierre Auger Observatory has begun a major Upgrade of its already impressive capabilities, with an emphasis on improved mass composition determination using the surface detectors of the...
View ArticleGPz: Non-stationary sparse Gaussian processes for heteroscedastic uncertainty...
The next generation of cosmology experiments will be required to use photometric redshifts rather than spectroscopic redshifts. Obtaining accurate and well-characterized photometric redshift...
View ArticleThe reliability of observational measurements of column density probability...
Probability distribution functions (PDFs) of column densities are an established tool to characterize the evolutionary state of interstellar clouds. Using simulations, we show to what degree their...
View ArticleScience Learning via Participation in Online Citizen Science [Replacement]
We investigate the development of scientific content knowledge of volunteers participating in online citizen science projects in the Zooniverse (www.zooniverse.org), including the astronomy projects...
View ArticleResults from the first use of low radioactivity argon in a dark matter search...
Liquid argon is a bright scintillator with potent particle identification properties, making it an attractive target for direct-detection dark matter searches. The DarkSide-50 dark matter search here...
View ArticleTowards automatic classification of all WISE sources
The WISE satellite has detected hundreds of millions sources over the entire sky. Classifying them reliably is however a challenging task due to degeneracies in WISE multicolour space and low levels of...
View ArticleNEWS: Nuclear Emulsions for WIMP Search
Nowadays there is compelling evidence for the existence of dark matter in the Universe. A general consensus has been expressed on the need for a directional sensitive detector to confirm, with a...
View ArticleCharacterization of transiting exoplanets: analyzing the impact of the host...
In this PhD dissertation, I discuss issues of the Radial Velocities (RV) and transit methods. These techniques allow us to derive the mass and radius of an exoplanet, necessary to model its bulk...
View ArticleResults from the first use of low radioactivity argon in a dark matter search...
Liquid argon is a bright scintillator with potent particle identification properties, making it an attractive target for direct-detection dark matter searches. The DarkSide-50 dark matter search here...
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 ArticleIntegration of Particle-Gas Systems with Stiff Mutual Drag Interaction...
Numerical simulation of numerous mm/cm-sized particles embedded in a gaseous disk has become an important tool in the study of planet formation and in understanding the dust distribution in observed...
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 ArticlePolarization leakage in epoch of reionization windows — II. Primary beam...
Leakage of diffuse polarized emission into Stokes I caused by the polarized primary beam of the instrument might mimic the spectral structure of the 21-cm signal coming from the epoch of reionization...
View ArticleLimits of noise and confusion in the MWA GLEAM year 1 survey
The GaLactic and Extragalactic All-sky MWA survey (GLEAM) is a new relatively low resolution, contiguous 72-231 MHz survey of the entire sky south of declination +25 deg. In this paper, we outline one...
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