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Oct 26, 2016

Using radiative energy losses to constrain the magnetisation and ma…

We calculate the severe radiative energy losses which occur at the base of black hole jets using a relativistic fluid jet model, including in-situ ac…
Jul 20, 2007
By sousbie

The three dimensional skeleton: tracing the filamentary structure of …

The skeleton formalism aims at extracting and quantifying the filamentary structure of the universe is generalized to 3D density fields; a numerical …
Mar 09, 2011

The Subluminous and Peculiar Type Ia Supernova PTF09dav

PTF09dav is a peculiar subluminous type Ia supernova (SN) discovered by the Palomar Transient Factory (PTF). Spectroscopically, it appears superficia…
Oct 06, 2007

The star formation histories of early-type galaxies: insights from th…

Our current understanding of the star formation histories of early-type galaxies is reviewed, in the context of recent observational studies of their…
Oct 07, 2014

A prompt radio transient associated with a gamma-ray superflare from …

On 2014 April 23, the Swift satellite detected a gamma-ray superflare from the nearby star system DG CVn. This system comprises a M-dwarf binary with…
Sep 04, 2013

The effects of disc warping on the inclination of planetary orbits

The interaction between a planet located in the inner region of a disc and the warped outer region is studied. We consider the stage of evolution aft…
Feb 08, 2011

Inhomogeneous cosmological models: exact solutions and their applic…

Recently, inhomogeneous generalisations of the Friedmann-Lemaitre-Robertson-Walker cosmological models have gained interest in the astrophysical comm…
Mar 17, 2015

Evolution of the fine-structure constant in runaway dilaton models

We study the detailed evolution of the fine-structure constant $\alpha$ in the string-inspired runaway dilaton class of models of Damour, Piazza and …
Sep 27, 2011

Mapping the Shores of the Brown Dwarf Desert III: Young Moving Groups

We present the results of an aperture masking interferometry survey for substellar companions around 67 members of the young (~8-200Myr) nearby (~5-8…
Jan 16, 2008
By nordin

Quantifying systematic uncertainties in supernova cosmology

Observations of Type Ia supernovae used to map the expansion history of the Universe suffer from systematic uncertainties that need to be propagated …
May 23, 2011
By lmrf

SWIFT Observations of the Arp 147 Ring galaxy system

We present observations of Arp 147, a galaxy system comprising a collisionally-created ring galaxy and an early-type galaxy, using the Oxford SWIFT i…
Apr 11, 2012

Near-infrared observations of type Ia supernovae: The best known st…

We present an analysis of the Hubble diagram for 12 Type Ia supernovae (SNe Ia) observed in the near-infrared J and H bands. We select SNe exclusivel…
May 15, 2008
By kcs

Multiwavelength study of Cygnus A I. Precession and slow jet speeds f…

We study the jet and counterjet of the powerful classical double FRII radio galaxy Cygnus A as seen in the 5, 8 and 15-GHz radio bands using the high…
Jul 05, 2011
By pmocz

The inverse-Compton ghost HDF 130 and the giant radio galaxy 6C 090…

We present new GMRT observations of HDF 130, an inverse-Compton (IC) ghost of a giant radio source that is no longer being powered by jets. We compar…
Feb 06, 2010
By jacke

Constraining dark matter halo properties using lensed SNLS supernovae

This paper exploits the gravitational magnification of SNe Ia to measure properties of dark matter haloes. The magnification of individual SNe Ia can…
May 06, 2007
By cabella

Constraints on CPT violation from WMAP three year polarization data: …

We perform a wavelet analysis of the temperature and polarization maps of the Cosmic Microwave Background (CMB) delivered by the WMAP experiment in s…
Dec 21, 2011
By ptaylor
Fluid Dynamics

Measuring the Effects of Artificial Viscosity in SPH Simulations of …

A commonly cited drawback of SPH is the introduction of spurious shear viscosity by the artificial viscosity term in situations involving rotation. E…
Dec 23, 2009
By mrlb

2D Kinematics and physical properties of 1.0 < z < 1.5 star-forming …

We combined two-dimensional kinematic and morphology information on the Halpha emission, obtained using near-infrared integral field spectroscopy, wi…
Feb 16, 2011

The Metric of the Cosmos from Luminosity and Age Data

This paper presents the algorithm for determining the Lemaitre-Tolman (LT) model that best fits given datasets for maximum stellar ages, and SNIa lum…
Dec 09, 2010
By siri

Scale-dependent Bias from the Reconstruction of Non-Gaussian Distri…

Primordial non-Gaussianity introduces a scale-dependent variation in the clustering of density peaks corresponding to rare objects. This variation, p…
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