All Outputs (203)

Clumpy galaxies in CANDELS. II. Physical properties of UV-bright clumps at 0.5 ? z < 3 (2018)
Journal Article

Studying giant star-forming clumps in distant galaxies is important to understand galaxy formation and evolution. At present, however, observers and theorists have not reached a consensus on whether the observed "clumps" in distant galaxies are the s... Read More about Clumpy galaxies in CANDELS. II. Physical properties of UV-bright clumps at 0.5 ? z < 3.

Detecting Lorentz violations with gravitational waves from black hole binaries (2018)
Journal Article

Gravitational wave observations have been used to test Lorentz symmetry by looking for dispersive effects that are caused by higher order corrections to the dispersion relation. In this Letter I argue on general grounds that, when such corrections ar... Read More about Detecting Lorentz violations with gravitational waves from black hole binaries.

Quench dynamics of a dissipative Rydberg gas in the classical and quantum regimes (2018)
Journal Article

Understanding the non-equilibrium behavior of quantum systems is a major goal of contemporary physics. Much research is currently focused on the dynamics of many-body systems in lowdimensional lattices following a quench, i.e., a sudden change of par... Read More about Quench dynamics of a dissipative Rydberg gas in the classical and quantum regimes.

Writing and reading antiferromagnetic Mn2Au by Néel spin-orbit torques and large anisotropic magnetoresistance (2018)
Journal Article

Using antiferromagnets as active elements in spintronics requires the ability to manipulate and read-out the Néel vector orientation. Here we demonstrate for Mn2Au, a good conductor with a high ordering temperature suitable for applications, reproduc... Read More about Writing and reading antiferromagnetic Mn2Au by Néel spin-orbit torques and large anisotropic magnetoresistance.

Ho?ava gravity after GW170817 (2018)
Journal Article

The recent detection of gravitational wave GW170817 has placed a severe bound on the deviation of the speed of gravitational waves from the speed of light. We explore the consequences of this detection for Ho?ava gravity.

Atom chips with free-standing two-dimensional electron gases: advantages and challenges (2018)
Journal Article

In this work, we consider the advantages and challenges of using free-standing two-dimensional electron gases (2DEG) as active components in atom chips for manipulating ultracold ensembles of alkali atoms. We calculate trapping parameters achievable... Read More about Atom chips with free-standing two-dimensional electron gases: advantages and challenges.

Evidence for merger-driven growth in luminous, high-z, obscured AGNs in the CANDELS/COSMOS field (2018)
Journal Article

While major mergers have long been proposed as a driver of both active galactic nucleus (AGN) activity and the MBH–sbulge relation, studies of moderate to high-redshift Seyfert-luminosity AGN hosts have found little evidence for enhanced rates of in... Read More about Evidence for merger-driven growth in luminous, high-z, obscured AGNs in the CANDELS/COSMOS field.

Galaxy and Mass Assembly (GAMA): morphological transformation of galaxies across the green valley (2018)
Journal Article

We explore constraints on the joint photometric and morphological evolution of typical low redshift galaxies as they move from the blue cloud through the green valley and onto the red sequence. We select GAMA survey galaxies with 10.25 < log(M*/M⊙) <... Read More about Galaxy and Mass Assembly (GAMA): morphological transformation of galaxies across the green valley.

Simulations of Cold Electroweak Baryogenesis: quench from portal coupling to new singlet field (2018)
Journal Article

We compute the baryon asymmetry generated from Cold Electroweak Baryogenesis, when a dynamical Beyond-the-Standard-Model scalar singlet field triggers the spinodal transition. Using a simple potential for this additional field, we match the speed of... Read More about Simulations of Cold Electroweak Baryogenesis: quench from portal coupling to new singlet field.

ALMA observations of lensed Herschel sources: testing the dark matter halo paradigm (2018)
Journal Article

With the advent of wide-area submillimetre surveys, a large number of high-redshift gravitationally lensed dusty star-forming galaxies have been revealed. Because of the simplicity of the selection criteria for candidate lensed sources in such survey... Read More about ALMA observations of lensed Herschel sources: testing the dark matter halo paradigm.

The second Herschel–ATLAS Data Release – III. Optical and near-infrared counterparts in the North Galactic Plane field (2018)
Journal Article

This paper forms part of the second major public data release of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). In this work, we describe the identification of optical and near-infrared counterparts to the submillimetre detected so... Read More about The second Herschel–ATLAS Data Release – III. Optical and near-infrared counterparts in the North Galactic Plane field.

The USNO-UKIRT K-band Hemisphere Survey (2018)
Conference Proceeding

We present initial results from the United States Naval Observatory (USNO) and UKIRT K-band Hemisphere Survey (U2HS), currently underway using the Wide Field Camera (WFCAM) installed on UKIRT on Maunakea. U2HS is a collaborative effort undertaken by... Read More about The USNO-UKIRT K-band Hemisphere Survey.

Voltage- and light-controlled spin properties of a two-dimensional hole gas in p-type GaAs/AlAs resonant tunneling diodes (2018)
Journal Article

We have investigated the spin properties of a two-dimensional hole gas (2DHG) formed at the contact layer of a p-type GaAs/AlAs resonant tunneling diode (RTD). We have measured the polarized-resolved photoluminescence of the RTD as a function of bias... Read More about Voltage- and light-controlled spin properties of a two-dimensional hole gas in p-type GaAs/AlAs resonant tunneling diodes.

Exploring the advantages of multiband fMRI with simultaneous EEG to investigate coupling between gamma frequency neural activity and the BOLD response in humans (2018)
Journal Article

We established an optimal combination of EEG recording during sparse multiband (MB) fMRI that preserves high resolution, whole brain fMRI coverage whilst enabling broad-band EEG recordings which are uncorrupted by MRI gradient artefacts (GAs). We fir... Read More about Exploring the advantages of multiband fMRI with simultaneous EEG to investigate coupling between gamma frequency neural activity and the BOLD response in humans.

Stable DHLA–PEG capped PbS quantum dots: from synthesis to near-infrared biomedical imaging (2018)
Journal Article

The short shelf-life of water-soluble quantum dots (QDs) due to colloidal instability represents a major drawback to their exploitation. This work examines the colloidal stability of PbS nanoparticles capped with dihydrolipoic acid–polyethylene glyco... Read More about Stable DHLA–PEG capped PbS quantum dots: from synthesis to near-infrared biomedical imaging.

Growing up in a megalopolis: environmental effects on galaxy evolution in a supercluster at z?0.65 in UKIDSS UDS (2018)
Journal Article

We present a large-scale galaxy structure Cl J021734-0513 at z ∼ 0.65 discovered in the UKIDSS UDS field, made of ∼ 20 galaxy groups and clusters, spreading over 10 Mpc. We report on a VLT/VIMOS spectroscopic follow-up program that, combined with pas... Read More about Growing up in a megalopolis: environmental effects on galaxy evolution in a supercluster at z?0.65 in UKIDSS UDS.

Candidate high-z proto-clusters among the Planck compact sources, as revealed by Herschel-SPIRE (2018)
Journal Article

By determining the nature of all the Planck compact sources within 808.4 deg2 of large Herschel surveys, we have identified 27 candidate proto-clusters of dusty star forming galaxies (DSFGs) that are at least 3σ overdense in either 250, 350 or 500 μm... Read More about Candidate high-z proto-clusters among the Planck compact sources, as revealed by Herschel-SPIRE.

The Herschel-ATLAS: magnifications and physical sizes of 500-?m-selected strongly lensed galaxies (2018)
Journal Article

We perform lens modelling and source reconstruction of Sub-millimetre Array (SMA) data for a sample of 12 strongly lensed galaxies selected at 500μm in the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). A previous analysis of the same... Read More about The Herschel-ATLAS: magnifications and physical sizes of 500-?m-selected strongly lensed galaxies.

Quantum-limited directional amplifiers with optomechanics (2018)
Journal Article

Directional amplifiers are an important resource in quantum-information processing, as they protect sensitive quantum systems from excess noise. Here, we propose an implementation of phase-preserving and phase-sensitive directional amplifiers for mic... Read More about Quantum-limited directional amplifiers with optomechanics.

Synthesis and properties of open fullerenes encapsulating ammonia and methane (2018)
Journal Article

We describe the synthesis and characterisation of open fullerene (1) and its reduced form (2) in which CH₄ and NH₃ are encapsulated, respectively. The ¹H NMR resonance of endohedral NH₃ is broadened by scalar coupling to the quadrupolar ¹⁴N nucleus,... Read More about Synthesis and properties of open fullerenes encapsulating ammonia and methane.