Skip to main content

Research Repository

Advanced Search

All Outputs (78)

Re-evaluation of the ¹⁶O(n, γ)¹⁷O cross section at astrophysical energies and its role as a neutron poison in the s-process (2016)
Journal Article
Mohr, P., Heinz, C., Pignatari, M., Dillmann, I., Mengoni, A., & Käppeler, F. (2016). Re-evaluation of the ¹⁶O(n, γ)¹⁷O cross section at astrophysical energies and its role as a neutron poison in the s-process. The Astrophysical journal, 827(1), Article ARTN 29. https://doi.org/10.3847/0004-637X/827/1/29

The doubly magic nucleus ¹⁶O has a small neutron-capture cross section of just a few tens of microbarns in the astrophysical energy region. Despite this, ¹⁶O plays an important role as a neutron poison in the astrophysical slow neutron capture (s) pr... Read More about Re-evaluation of the ¹⁶O(n, γ)¹⁷O cross section at astrophysical energies and its role as a neutron poison in the s-process.

A textbook example of ram-pressure stripping in the Hydra A/A780 cluster (2016)
Journal Article
Roediger, E., De Grandi, S., Eckert, D., Gaspari, M., Gastaldello, F., Ghizzardi, S., Girardi, M., Molendi, S., Nonino, M., & Rossetti, M. (2016). A textbook example of ram-pressure stripping in the Hydra A/A780 cluster. Astronomy and Astrophysics, 592, A154. https://doi.org/10.1051/0004-6361/201526641

In the current epoch, one of the main mechanisms driving the growth of galaxy clusters is the continuous accretion of group-scale halos. In this process, the ram pressure applied by the hot intracluster medium on the gas content of the infalling grou... Read More about A textbook example of ram-pressure stripping in the Hydra A/A780 cluster.

Geometrical structures of chemically decomposed thick and thin disk populations (2016)
Book Chapter
Kawata, D., Brook, C., Rahimi, A., & Gibson, B. (2017). Geometrical structures of chemically decomposed thick and thin disk populations.

We summarize the thick and thin disk formation commonly seen in cosmological N-body simulations. As suggested in Brook et al. (2004), a hierarchical clustering scenario causes multiple minor gas-rich mergers, and leads to the formation of a kinematic... Read More about Geometrical structures of chemically decomposed thick and thin disk populations.

Pan-STARRS and PESSTO search for an optical counterpart to the LIGO gravitational-wave source GW150914 (2016)
Journal Article
Smartt, S. J., Chambers, K. C., Smith, K. W., Huber, M. E., Young, D. R., Cappellaro, E., Wright, D. E., Coughlin, M., Schultz, A. S. B., Denneau, L., Flewelling, H., Heinze, A., Magnier, E. A., Primak, N., Rest, A., Sherstyuk, A., Stalder, B., Stubbs, C. W., Tonry, J., Waters, C., …Goggia, T. (2016). Pan-STARRS and PESSTO search for an optical counterpart to the LIGO gravitational-wave source GW150914. Monthly notices of the Royal Astronomical Society, 462(4), 4094-4116. https://doi.org/10.1093/mnras/stw1893

We searched for an optical counterpart to the first gravitational wave source discovered by LIGO (GW150914), using a combination of the Pan-STARRS1 wide-field telescope and the PESSTO spectroscopic follow-up programme. As the final LIGO sky maps chan... Read More about Pan-STARRS and PESSTO search for an optical counterpart to the LIGO gravitational-wave source GW150914.

Two-electron processes in multiple ionization under strong soft-x-ray radiation (2016)
Journal Article
Ilchen, M., Mazza, T., Karamatskos, E. T., Markellos, D., Bakhtiarzadeh, S., Rafipoor, A. J., Costello, J. T., Walsh, N., Kelly, T. J., O'Keeffe, P., Gerken, N., Martins, M., Lambropoulos, P., & Meyer, M. (2016). Two-electron processes in multiple ionization under strong soft-x-ray radiation. Physical Review A, 94(1), 013413-1-013413-11. https://doi.org/10.1103/PhysRevA.94.013413

In a combined experimental and theoretical study we have investigated the ionization of atomic argon upon irradiation with intense soft-x-ray pulses of 105 eV photon energy from the free-electron laser FLASH. The measured ion yields show charge state... Read More about Two-electron processes in multiple ionization under strong soft-x-ray radiation.

The role of gas infall in the evolution of disc galaxies (2016)
Journal Article
Mollá, M., Díaz, Á. I., Gibson, B. K., Cavichia, O., & López-Sánchez, Á. R. (2016). The role of gas infall in the evolution of disc galaxies. Monthly notices of the Royal Astronomical Society, 462(2), 1329-1340. https://doi.org/10.1093/mnras/stw1723

Spiral galaxies are thought to acquire their gas through a protracted infall phase resulting in the inside-out growth of their associated discs. For field spirals, this infall occurs in the lower density environments of the cosmic web. The overall in... Read More about The role of gas infall in the evolution of disc galaxies.

21 year timing of the black-widow pulsar J2051-0827 (2016)
Journal Article
Shaifullah, G., Verbiest, J. P., Freire, P. C., Tauris, T. M., Wex, N., Oslowski, S., …Tiburzi, C. (2016). 21 year timing of the black-widow pulsar J2051-0827. Monthly notices of the Royal Astronomical Society, 462(1), 1029-1038. https://doi.org/10.1093/mnras/stw1737

Timing results for the black-widow pulsar J2051-0827 are presented, using a 21 year data set from four European Pulsar Timing Array telescopes and the Parkes radio telescope. This data set, which is the longest published to date for a black-widow sys... Read More about 21 year timing of the black-widow pulsar J2051-0827.

Application of a theory and simulation-based convective boundary mixing model for AGB star evolution and nucleosynthesis (2016)
Journal Article
Battino, U., Pignatari, M., Ritter, C., Herwig, F., Denisenkov, P., Den Hartogh, J. W., Trappitsch, R., Hirschi, R., Freytag, B., Thielemann, F., & Paxton, B. (2016). Application of a theory and simulation-based convective boundary mixing model for AGB star evolution and nucleosynthesis. The Astrophysical journal, 827(1), 30. https://doi.org/10.3847/0004-637X/827/1/30

The s-process nucleosynthesis in Asymptotic giant branch (AGB) stars depends on the modeling of convective boundaries. We present models and s-process simulations that adopt a treatment of convective boundaries based on the results of hydrodynamic si... Read More about Application of a theory and simulation-based convective boundary mixing model for AGB star evolution and nucleosynthesis.

Chemical separation of disc components using RAVE (2016)
Journal Article
Wojno, J., Kordopatis, G., Steinmetz, M., McMillan, P., Matijevič, G., Binney, J., Wyse, R. F. G., Boeche, C., Just, A., Grebel, E. K., Siebert, A., Bienaymé, O., Gibson, B. K., Zwitter, T., Bland-Hawthorn, J., Navarro, J. F., Parker, Q. A., Reid, W., Seabroke, G., & Watson, F. (2016). Chemical separation of disc components using RAVE. Monthly notices of the Royal Astronomical Society, 461(4), 4246-4255. https://doi.org/10.1093/mnras/stw1633

© 2016 The Authors. We present evidence from the RAdial Velocity Experiment (RAVE) survey of chemically separated, kinematically distinct disc components in the solar neighbourhood.We apply probabilistic chemical selection criteria to separate our sa... Read More about Chemical separation of disc components using RAVE.

Dispersion and the electron-phonon interaction in a single heterostructure (2016)
Journal Article
Naylor, D. R., Dyson, A., & Ridley, B. K. (2017). Dispersion and the electron-phonon interaction in a single heterostructure. Physica E: Low-dimensional Systems and Nanostructures, 86, 218-224. https://doi.org/10.1016/j.physe.2016.06.027

We investigate the electron-phonon interaction in a polar-polar single heterostructure through the use of the linear combination of hybrid phonon modes, considering the role of longitudinal optical, transverse optical and interface modes, using a con... Read More about Dispersion and the electron-phonon interaction in a single heterostructure.

Ocean acidification affects marine chemical communication by changing structure and function of peptide signalling molecules (2016)
Journal Article
Roggatz, C. C., Lorch, M., Hardege, J. D., & Benoit, D. M. (2016). Ocean acidification affects marine chemical communication by changing structure and function of peptide signalling molecules. Global change biology, 22(12), 3914-3926. https://doi.org/10.1111/gcb.13354

Ocean acidification is a global challenge that faces marine organisms in the near future with a predicted rapid drop in pH of up to 0.4 units by the end of this century. Effects of the change in ocean carbon chemistry and pH on the development, growt... Read More about Ocean acidification affects marine chemical communication by changing structure and function of peptide signalling molecules.

Inhomogeneous chemical evolution of r-process elements (2016)
Presentation / Conference Contribution
Wehmeyer, B., Pignatari, M., & Thielemann, F.-K. Inhomogeneous chemical evolution of r-process elements. Presented at CETUP* 2015 – WORKSHOP ON DARK MATTER, NEUTRINO PHYSICS AND ASTROPHYSICS AND PPC 2015 – IXTH INTERNATIONAL CONFERENCE ON INTERCONNECTIONS BETWEEN PARTICLE PHYSICS AND COSMOLOGY, Deadwood, South Dakota, USA

We report the results of a galactic chemical evolution (GCE) study for r-process- and alpha elements. For this work, we used the inhomogeneous GCE model "ICE", which allows to keep track of the galactic abundances of elements produced by different as... Read More about Inhomogeneous chemical evolution of r-process elements.

A photometrically and spectroscopically confirmed population of passive spiral galaxies (2016)
Journal Article
Fraser-McKelvie, A., Brown, M. J. I., Pimbblet, K. A., Dolley, T., Crossett, J. P., & Bonne, N. J. (2016). A photometrically and spectroscopically confirmed population of passive spiral galaxies. Monthly notices of the Royal Astronomical Society. Letters, 462(1), L11-L15. https://doi.org/10.1093/mnrasl/slw117

We have identified a population of passive spiral galaxies from photometry and integral field spectroscopy. We selected z < 0.035 spiral galaxies that have WISE colours consistent with little mid-infrared emission from warm dust. Matched aperture pho... Read More about A photometrically and spectroscopically confirmed population of passive spiral galaxies.

Uncertainties in Galactic Chemical Evolution Models (2016)
Journal Article
Côté, B., Ritter, C., O’Shea, B. W., Herwig, F., Pignatari, M., Jones, S., & Fryer, C. L. (2016). Uncertainties in Galactic Chemical Evolution Models. The Astrophysical journal, 824(2), Article ARTN 82. https://doi.org/10.3847/0004-637X/824/2/82

We use a simple one-zone galactic chemical evolution model to quantify the uncertainties generated by the input parameters in numerical predictions for a galaxy with properties similar to those of the Milky Way. We compiled several studies from the l... Read More about Uncertainties in Galactic Chemical Evolution Models.

Cold fronts: probes of plasma astrophysics in galaxy clusters (2016)
Journal Article
ZuHone, J. A., & Roediger, E. (2016). Cold fronts: probes of plasma astrophysics in galaxy clusters. Journal of Plasma Physics, 82(3), 535820301-1-535820301-48. https://doi.org/10.1017/s0022377816000544

The most massive baryonic component of galaxy clusters is the “intracluster medium” (ICM), a diffuse, hot, weakly magnetized plasma that is most easily observed in the X-ray band. Despite being observed for decades, the macroscopic transport properti... Read More about Cold fronts: probes of plasma astrophysics in galaxy clusters.

Numerical investigation of the Rayleigh hypothesis for electromagnetic scattering by a particle (2016)
Journal Article
Auguie, B., Somerville, W. R. C., Roache, S., & Le Ru, E. C. (2016). Numerical investigation of the Rayleigh hypothesis for electromagnetic scattering by a particle. Journal of Optics, 18(7), Article 075007. https://doi.org/10.1088/2040-8978/18/7/075007

The validity of the Rayleigh hypothesis has been a long-standing issue in the applicability of the T-matrix method to near-field calculations, and despite numerous theoretical works, the practical consequences for numerical simulations have remained... Read More about Numerical investigation of the Rayleigh hypothesis for electromagnetic scattering by a particle.

Testing hydrodynamics schemes in galaxy disc simulations (2016)
Journal Article
Few, C. G., Dobbs, C., Pettitt, A., & Konstandin, L. (2016). Testing hydrodynamics schemes in galaxy disc simulations. Monthly notices of the Royal Astronomical Society, 460(4), 4382-4396. https://doi.org/10.1093/mnras/stw1226

We examine how three fundamentally different numerical hydrodynamics codes follow the evolution of an isothermal galactic disc with an external spiral potential. We compare an adaptive mesh refinement code (RAMSES), a smoothed particle hydrodynamics... Read More about Testing hydrodynamics schemes in galaxy disc simulations.

Fluorescent emission enhancement by aluminium nanoantenna arrays in the near UV (2016)
Journal Article
Dorh, N., Sarua, A., Stokes, J., Hueting, N. A., & Cryan, M. J. (2016). Fluorescent emission enhancement by aluminium nanoantenna arrays in the near UV. Journal of Optics, 18(7), 075008. https://doi.org/10.1088/2040-8978/18/7/075008

In this paper, we demonstrate fluorescence enhancement of a laser dye, using aluminium nanoantenna arrays designed for the near UV range. A series of nanorod arrays were fabricated by focused ion beam milling then spin-coated with a dye with an intri... Read More about Fluorescent emission enhancement by aluminium nanoantenna arrays in the near UV.

Magnetic cylindrical colloids at liquid interfaces exhibit non-volatile switching of their orientation in an external field (2016)
Journal Article
Newton, B. J., & Buzza, D. M. A. (2016). Magnetic cylindrical colloids at liquid interfaces exhibit non-volatile switching of their orientation in an external field. Soft matter, 12(24), 5285-5296. https://doi.org/10.1039/c6sm00136j

We study the orientation of magnetic cylindrical particles adsorbed at a liquid interface in an external field using analytical theory and high resolution finite element simulations. Cylindrical particles are interesting since they possess multiple l... Read More about Magnetic cylindrical colloids at liquid interfaces exhibit non-volatile switching of their orientation in an external field.