Outputs (370)

Large-scale structure in f(T) gravity (2011)
Journal Article
Li, B., Sotiriou, T., & Barrow, J. (2011). Large-scale structure in f(T) gravity. Physical Review D, 83, Article 104017. https://doi.org/10.1103/physrevd.83.104017

In this work we study the cosmology of the general f(T) gravity theory. We express the modified Einstein equations using covariant quantities, and derive the gauge-invariant perturbation equations in covariant form. We consider a specific choice of f... Read More about Large-scale structure in f(T) gravity.

A large catalogue of ultraluminous X-ray source candidates in nearby galaxies (2011)
Journal Article
Walton, D., Gladstone, J., Roberts, T., & Fabian, A. (2011). A large catalogue of ultraluminous X-ray source candidates in nearby galaxies. Astronomical Notes, 332(4), 354-357. https://doi.org/10.1002/asna.201011498

Since their discovery, Ultraluminous X-ray sources (ULXs) have attracted attention due to their combination of extreme luminosities and extra-nuclear locations. However, they are a fairly rare phenomenon, and attempts to investigate the general prope... Read More about A large catalogue of ultraluminous X-ray source candidates in nearby galaxies.

An 'electromagnetic wiggler' originating from refraction of waves at the side edge of a Bragg reflector (2011)
Journal Article
Iorsh, I., Kaliteevski, M., Brand, S., Abram, R., & Kaliteevskaya, N. (2011). An 'electromagnetic wiggler' originating from refraction of waves at the side edge of a Bragg reflector. Journal of Modern Optics, 58(8), 686-693. https://doi.org/10.1080/09500340.2011.565887

Calculations are reported which predict that light incident on the side edge of a Bragg reflector can show varied and unusual refraction behaviour, including a rapid transition from positive to negative refraction. Although under certain conditions n... Read More about An 'electromagnetic wiggler' originating from refraction of waves at the side edge of a Bragg reflector.

On the effects of coupled scalar fields on structure formation (2011)
Journal Article
Li, B., & Barrow, J. (2011). On the effects of coupled scalar fields on structure formation. Monthly Notices of the Royal Astronomical Society, 413(1), 262-270. https://doi.org/10.1111/j.1365-2966.2010.18130.x

A coupling between a scalar field (representing the dark energy) and dark matter could produce rich phenomena in cosmology. It affects cosmic structure formation mainly through the fifth force, a velocity-dependent force that acts parallel to particl... Read More about On the effects of coupled scalar fields on structure formation.

Polymeric spin-valves at room temperature (2011)
Journal Article
Morley, N., Dhandapani, D., Rao, A., Al Qahtani, H., Gibbs, M., Grell, M., …Tanner, B. (2011). Polymeric spin-valves at room temperature. Synthetic Metals, 161(7-8), 558-562. https://doi.org/10.1016/j.synthmet.2010.11.011

Detection of very-high-energy $\gamma$-ray emission from the vicinity of PSR B1706-44 and G 343.1-2.3 with H.E.S.S. (2011)
Journal Article
Collaboration, H., Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A., Anton, G., …Giacani, E. (2011). Detection of very-high-energy $\gamma$-ray emission from the vicinity of PSR B1706-44 and G 343.1-2.3 with H.E.S.S. Astronomy & Astrophysics, 528, https://doi.org/10.1051/0004-6361/201015381

Galaxy and Mass Assembly: FUV, NUV, ugrizYJHK Petrosian, Kron and Sérsic photometry (2011)
Journal Article
Hill, D., Kelvin, L., Driver, S., Robotham, A., Cameron, E., Cross, N., …van Kampen, E. (2011). Galaxy and Mass Assembly: FUV, NUV, ugrizYJHK Petrosian, Kron and Sérsic photometry. Monthly Notices of the Royal Astronomical Society, 412, 765-799. https://doi.org/10.1111/j.1365-2966.2010.17950.x

(No) dynamical constraints on the mass of the black hole in two ULXs (2011)
Journal Article
Roberts, T., Gladstone, J., Goulding, A., Swinbank, A., Ward, M., Goad, M., & Levan, A. (2011). (No) dynamical constraints on the mass of the black hole in two ULXs. Astronomical Notes, 332(4), 398-401. https://doi.org/10.1002/asna.201011508

We present the preliminary results of two Gemini campaigns to constrain the mass of the black hole in an ultraluminous X-ray source (ULX) via optical spectroscopy. Pilot studies of the optical counterparts of a number of ULXs revealed two candidates... Read More about (No) dynamical constraints on the mass of the black hole in two ULXs.

On the Evolution of the Molecular Gas Fraction of Star-Forming Galaxies (2011)
Journal Article
Geach, J., Smail, I., Moran, S., MacArthur, L., Lagos, C., & Edge, A. (2011). On the Evolution of the Molecular Gas Fraction of Star-Forming Galaxies. Astrophysical Journal Letters, 730(2), Article L19. https://doi.org/10.1088/2041-8205/730/2/l19

Gas expulsion by quasar-driven winds as a solution to the overcooling problem in galaxy groups and clusters (2011)
Journal Article
McCarthy, I., Schaye, J., Bower, R., Ponman, T., Booth, C., Dalla Vecchia, C., & Springel, V. (2011). Gas expulsion by quasar-driven winds as a solution to the overcooling problem in galaxy groups and clusters. Monthly Notices of the Royal Astronomical Society, 412(3), 1965-1984. https://doi.org/10.1111/j.1365-2966.2010.18033.x