Outputs (559)

Quantum mechanical tunneling in the automerization of cyclobutadiene (2018)
Journal Article
Schoonmaker, R., Lancaster, T., & Clark, S. (2018). Quantum mechanical tunneling in the automerization of cyclobutadiene. The Journal of Chemical Physics, 148(10), Article 104109. https://doi.org/10.1063/1.5019254

Cyclobutadiene has a four-membered carbon ring with two double bonds, but this highly strained molecular configuration is almost square and, via a coordinated motion, the nuclei quantum mechanically tunnels through the high-energy square state to a c... Read More about Quantum mechanical tunneling in the automerization of cyclobutadiene.

Reconstructing the baryon acoustic oscillations using biased tracers (2018)
Journal Article
Birkin, J., Li, B., Cautun, M., & Shi, Y. (2018). Reconstructing the baryon acoustic oscillations using biased tracers. Monthly Notices of the Royal Astronomical Society, 483(4), 5267-5280. https://doi.org/10.1093/mnras/sty3365

The reconstruction of the initial conditions of the Universe is an important topic in cosmology, particularly in the context of sharpening the measurement of the baryon acoustic oscillation (BAO) peak. Nonlinear reconstruction algorithms developed in... Read More about Reconstructing the baryon acoustic oscillations using biased tracers.

The Durham Adaptive Optics Simulation Platform (DASP): Current status (2018)
Journal Article
Basden, A., Bharmal, N., Jenkins, D., Morris, T., Osborn, J., Peng, J., & Staykov, L. (2018). The Durham Adaptive Optics Simulation Platform (DASP): Current status. SoftwareX, 7, 63-69. https://doi.org/10.1016/j.softx.2018.02.005

The Durham Adaptive Optics Simulation Platform (DASP) is a Monte-Carlo modelling tool used for the simulation of astronomical and solar adaptive optics systems. In recent years, this tool has been used to predict the expected performance of the forth... Read More about The Durham Adaptive Optics Simulation Platform (DASP): Current status.

A general framework to test gravity using galaxy clusters I: Modelling the dynamical mass of haloes in f(R) gravity (2018)
Journal Article
Mitchell, M. A., He, J., Arnold, C., & Li, B. (2018). A general framework to test gravity using galaxy clusters I: Modelling the dynamical mass of haloes in f(R) gravity. Monthly Notices of the Royal Astronomical Society, 477(1), 1133-1152. https://doi.org/10.1093/mnras/sty636

We propose a new framework for testing gravity using cluster observations, which aims to provide an unbiased constraint on modified gravity models from Sunyaev Zel’dovich (SZ) and X-ray cluster counts and the cluster gas fraction, among other possibl... Read More about A general framework to test gravity using galaxy clusters I: Modelling the dynamical mass of haloes in f(R) gravity.

The NuSTAR Extragalactic Surveys: Source Catalog and the Compton-thick Fraction in the UDS Field (2018)
Journal Article
Masini, A., Civano, F., Comastri, A., Fornasini, F., Ballantyne, D., Lansbury, G., …Zappacosta, L. (2018). The NuSTAR Extragalactic Surveys: Source Catalog and the Compton-thick Fraction in the UDS Field. Astrophysical Journal Supplement, 235(1), Article 17. https://doi.org/10.3847/1538-4365/aaa83d

We present the results and the source catalog of the NuSTAR survey in the UKIDSS Ultra Deep Survey (UDS) field, bridging the gap in depth and area between NuSTAR's ECDFS and COSMOS surveys. The survey covers a ~0.6 deg2 area of the field for a total... Read More about The NuSTAR Extragalactic Surveys: Source Catalog and the Compton-thick Fraction in the UDS Field.

The Cocoon Shocks of Cygnus A: Pressures and Their Implications for the Jets and Lobes (2018)
Journal Article
Snios, B., Nulsen, P. E., Wise, M. W., de Vries, M., Birkinshaw, M., Worrall, D. M., …Young, A. J. (2018). The Cocoon Shocks of Cygnus A: Pressures and Their Implications for the Jets and Lobes. Astrophysical Journal, 855(1), Article 71. https://doi.org/10.3847/1538-4357/aaaf1a

We use 2.0 Msec of Chandra observations to investigate the cocoon shocks of Cygnus A and some implications for its lobes and jet. Measured shock Mach numbers vary in the range 1.18–1.66 around the cocoon. We estimate a total outburst energy of $\sime... Read More about The Cocoon Shocks of Cygnus A: Pressures and Their Implications for the Jets and Lobes.

Unmixing the Galactic Halo with RR Lyrae tagging (2018)
Journal Article
Belokurov, V., Deason, A., Koposov, S., Catelan, M., Erkal, D., Drake, A., & Evans, N. (2018). Unmixing the Galactic Halo with RR Lyrae tagging. Monthly Notices of the Royal Astronomical Society, 477(2), 1472-1483. https://doi.org/10.1093/mnras/sty615

We show that tagging RR Lyrae stars according to their location in the period-amplitude diagram can be used to shed light on the genesis of the Galactic stellar halo. The mixture of RR Lyrae of ab type, separated into classes along the lines suggeste... Read More about Unmixing the Galactic Halo with RR Lyrae tagging.

Color Variabilities of Spectrally Defined Red QSOs at z = 0.3–1.2 (2018)
Journal Article
Chen, I.-C., Hwang, C.-Y., Kaiser, N., Magnier, E., Metcalfe, N., & Waters, C. (2018). Color Variabilities of Spectrally Defined Red QSOs at z = 0.3–1.2. Theory and Decision, 855(1), Article 66. https://doi.org/10.3847/1538-4357/aaab5b

We study the brightness and the color variabilities of 34 red and 122 typical quasi-stellar objects (QSOs) at z = 0.3–1.2 using data from the Pan-STARRS Medium Deep Survey. The red and the typical QSOs are selected based on the ratios of the flux den... Read More about Color Variabilities of Spectrally Defined Red QSOs at z = 0.3–1.2.

Searches for vector-like quarks at future colliders and implications for composite Higgs models with dark matter (2018)
Journal Article
Chala, M., Gröber, R., & Spannowsky, M. (2018). Searches for vector-like quarks at future colliders and implications for composite Higgs models with dark matter. Journal of High Energy Physics, 2018(3), Article 040. https://doi.org/10.1007/jhep03%282018%29040

Many composite Higgs models predict the existence of vector-like quarks with masses outside the reach of the LHC, e.g. m Q ≳ 2 TeV, in particular if these models contain a dark matter candidate. In such models the mass of the new resonances is bounde... Read More about Searches for vector-like quarks at future colliders and implications for composite Higgs models with dark matter.

Aqueous Immiscible Layered Double Hydroxides: Synthesis, Characterisation and Molecular Dynamics Simulation (2018)
Journal Article
Ruengkajorn, K., Erastova, V., Buffet, J., Greenwell, H. C., & O'Hare, D. (2018). Aqueous Immiscible Layered Double Hydroxides: Synthesis, Characterisation and Molecular Dynamics Simulation. Chemical Communications, 54(35), 4394-4397. https://doi.org/10.1039/c8cc00528a

We describe a novel post treatment for layered double hydroxide (LDH) materials using aqueous immiscible (AIM) solvents resulting in improved surface area and powder flow. The effect of solvent functional groups and structure are explored, aided by m... Read More about Aqueous Immiscible Layered Double Hydroxides: Synthesis, Characterisation and Molecular Dynamics Simulation.