All Outputs (110)

Short term X-ray spectral variability of the quasar PDS 456 observed in a low flux state (2016)
Journal Article
(2016). Short term X-ray spectral variability of the quasar PDS 456 observed in a low flux state. Monthly Notices of the Royal Astronomical Society, 1311-1329. https://doi.org/10.1093/mnras/stw354

We present an analysis of the 2013 Suzaku campaign on the nearby luminous quasar PDS 456, covering a total duration of ~1 Ms and a net exposure of 455 ks. During these observations, the X-ray flux was suppressed by a factor of >10 in the soft X-ray b... Read More about Short term X-ray spectral variability of the quasar PDS 456 observed in a low flux state.

New Transit Observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b and WASP-39 b (2016)
Journal Article
Maciejewski, G., Dimitrov, D., Mancini, L., Southworth, J., Ciceri, S., D'Ago, G., …Henning, T. (2016). New Transit Observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b and WASP-39 b. Acta Astronomica, 66(1), 55 - 74

We present new transit light curves for planets in six extrasolar planetary systems. They were acquired with 0.4-2.2 m telescopes located in west Asia, Europe, and South America. When combined with literature data, they allowed us to redetermine syst... Read More about New Transit Observations for HAT-P-30 b, HAT-P-37 b, TrES-5 b, WASP-28 b, WASP-36 b and WASP-39 b.

A 250-year periodicity in Southern Hemisphere westerly winds over the last 2600 years (2016)
Journal Article
(2016). A 250-year periodicity in Southern Hemisphere westerly winds over the last 2600 years. Climate of the Past, 189 -200. https://doi.org/10.5194/cp-12-189-2016

Southern Hemisphere westerly airflow has a significant influence on the ocean-atmosphere system of the mid-to high latitudes with potentially global climate implications. Unfortunately, historic observations only extend back to the late 19th century,... Read More about A 250-year periodicity in Southern Hemisphere westerly winds over the last 2600 years.

The Global Implications of the Hard Excess II: Analysis of the Local population of Radio Quiet AGN (2016)
Journal Article
(2016). The Global Implications of the Hard Excess II: Analysis of the Local population of Radio Quiet AGN. Astrophysical Journal, https://doi.org/10.3847/0004-637X/818/1/12

Active galactic nuclei (AGN) show evidence for reprocessing gas, outflowing from the accreting black hole. The combined effects of absorption and scattering from the circumnuclear material likely explains the `hard excess' of X-ray emission above 20... Read More about The Global Implications of the Hard Excess II: Analysis of the Local population of Radio Quiet AGN.

Hot Jupiters with relatives: discovery of additional planets in orbit around WASP-41 and WASP-47 (2016)
Journal Article
Hellier. (2016). Hot Jupiters with relatives: discovery of additional planets in orbit around WASP-41 and WASP-47. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201526965

We report the discovery of two additional planetary companions to WASP-41 and WASP-47. WASP-41 c is a planet of minimum mass 3.18 ± 0.20 MJup and eccentricity 0.29 ± 0.02, and it orbits in 421 ± 2 days. WASP-47 c is a planet of minimum mass 1.24 ± 0.... Read More about Hot Jupiters with relatives: discovery of additional planets in orbit around WASP-41 and WASP-47.

Heavy-mineral and garnet compositions of stream sediments and HP–UHP basement rocks from the Western Gneiss Region, SW Norway (2016)
Journal Article
(2016). Heavy-mineral and garnet compositions of stream sediments and HP–UHP basement rocks from the Western Gneiss Region, SW Norway. https://doi.org/10.17850/njg96-1-02

We present heavy-mineral and garnet geochemical data of recent stream sediments and HP?UHP bedrock from the Flatraket and Ulvesund plutonic bodies and from the island of Runde, Western Gneiss Region, SW Norway, to test to what extent the heavy minera... Read More about Heavy-mineral and garnet compositions of stream sediments and HP–UHP basement rocks from the Western Gneiss Region, SW Norway.

The Kinematics of Star Formation: Theory and Observation in the Gaia Era (Published title 'Star Formation in the Gaia Era') (2016)
Journal Article
Wright, N. (2016). The Kinematics of Star Formation: Theory and Observation in the Gaia Era (Published title 'Star Formation in the Gaia Era'). Astronomy and Geophysics, 37-42. https://doi.org/10.1093/astrogeo/atw042

The European Space Agency's Gaia space telescope, launched in 2013, aims to measure the positions, parallaxes, and proper motions of a billion stars in our Galaxy and throughout the Local Group. In doing so it will include hundreds of thousands of yo... Read More about The Kinematics of Star Formation: Theory and Observation in the Gaia Era (Published title 'Star Formation in the Gaia Era').

The Gaia-ESO Survey: Stellar radii in the young open clusters NGC 2264, NGC 2547, and NGC 2516 (2016)
Journal Article
Jackson, R. J., Jeffries, R. D., Randich, S., Bragaglia, A., Carraro, G., Costado, M., …Zaggia, S. (2016). The Gaia-ESO Survey: Stellar radii in the young open clusters NGC 2264, NGC 2547, and NGC 2516. Astronomy and Astrophysics Supplement Series, 586, Article A52. https://doi.org/10.1051/0004-6361/201527507

Context. Rapidly rotating, low-mass members of eclipsing binary systems have measured radii that are significantly larger than predicted by standard evolutionary models. It has been proposed that magnetic activity is responsible for this radius infla... Read More about The Gaia-ESO Survey: Stellar radii in the young open clusters NGC 2264, NGC 2547, and NGC 2516.

Water Dynamics in Shewanella oneidensis at Ambient and High Pressure using Quasi-Elastic Neutron Scattering (2016)
Journal Article
(2016). Water Dynamics in Shewanella oneidensis at Ambient and High Pressure using Quasi-Elastic Neutron Scattering. Scientific reports, 18862 -?. https://doi.org/10.1038/srep18862

Quasielastic neutron scattering (QENS) is an ideal technique for studying water transport and relaxation dynamics at pico- to nanosecond timescales and at length scales relevant to cellular dimensions. Studies of high pressure dynamic effects in live... Read More about Water Dynamics in Shewanella oneidensis at Ambient and High Pressure using Quasi-Elastic Neutron Scattering.

The search for ‘hot shales’ in the western Kufra Basin, Libya: geochemical and mineralogical characterisation of outcrops, and insights into latest Ordovician climate (2016)
Journal Article
(2016). The search for ‘hot shales’ in the western Kufra Basin, Libya: geochemical and mineralogical characterisation of outcrops, and insights into latest Ordovician climate. Arabian Journal of Geosciences, https://doi.org/10.1007/s12517-015-2173-0

Across the Saharan platform, mudrocks of latest Ordovician–Silurian age (the Tanezzuft Formation) are a major source rock interval for Palaeozoic petroleum systems, but source rock quality is variable and difficult to predict. In the Kufra Basin of s... Read More about The search for ‘hot shales’ in the western Kufra Basin, Libya: geochemical and mineralogical characterisation of outcrops, and insights into latest Ordovician climate.