Browsing by Author "Centre of Data Innovation Research"

Now showing items 1-20 of 328

    • A 100 kpc inverse Compton x-ray halo around 4C 60.07 at z = 3.79 

      Smail, I.; Lehmer, B.D.; Ivison, R.J.; Alexander, D.M.; Bower, R.; Stevens, J. A.; Geach, James; Scharf, C.; Coppin, Kristen; van Breugel, W. (2009)
      We analyze a 100 ks Chandra observation of the powerful radio galaxy, 4C 60.07 at z = 3.79. We identify extended X-ray emission with L X ~ 1045 erg s–1 across a ~90 kpc region around the radio galaxy. The energetics of ...

    • A 100-kiloparsec wind feeding the circumgalactic medium of a massive compact galaxy 

      Rupke, David S.~N.; Coil, Alison; Geach, James E.; Tremonti, Christy; Diamond-Stanic, Aleksandar M.; George, Erin R.; Hickox, Ryan C.; Kepley, Amanda A.; Leung, Gene; Moustakas, John; Rudnick, Gregory; Sell, Paul H. (2019-10-31)
      Ninety per cent of baryons are located outside galaxies, either in the circumgalactic or intergalactic medium1,2. Theory points to galactic winds as the primary source of the enriched and massive circumgalactic medium3,4,5,6. ...

    • 3D Selection of 167 Substellar Companions to Nearby Stars 

      Feng, Fabo; Butler, R. Paul; Vogt, Steven S.; Clement, Matthew S.; Tinney, C. G.; Cui, Kaiming; Aizawa, Masataka; Jones, Hugh R. A.; Bailey, J.; Burt, Jennifer; Carter, B. D.; Crane, Jeffrey D.; Dotti, Francesco Flammini; Holden, Bradford; Ma, Bo; Ogihara, Masahiro; Oppenheimer, Rebecca; O’Toole, S. J.; Shectman, Stephen A.; Wittenmyer, Robert A.; Wang, Sharon X.; Wright, D. J.; Xuan, Yifan (2022-08-26)
      We analyze 5108 AFGKM stars with at least five high-precision radial velocity points, as well as Gaia and Hipparcos astrometric data, utilizing a novel pipeline developed in previous work. We find 914 radial velocity signals ...

    • Active galactic nucleus feedback drives the colour evolution of local galaxies 

      Shabala, S.S.; Kaviraj, S.; Silk, J. (2011-06-01)
      We investigate the effects of active galactic nucleus (AGN) feedback on the colour evolution of galaxies found in local (z <0.2) groups and clusters. Galaxies located within the lobes of powerful Fanaroff-Riley type II ...

    • Active sensing in a dynamic olfactory world 

      Crimaldi, John; Lei, Hong; Schaefer, Andreas; Schmuker, Michael; Smith, Brain H.; C. True, Aaron; Verhagen, Justus V.; Victor , Jonathan D. (2021-09-30)
      This Perspective highlights the shift from the classic picture of olfaction as slow and static to a view in which dynamics play a critical role at many levels of sensing and behavior. Olfaction is now increasingly seen as ...

    • Activity and telluric contamination in HARPS observations of Alpha Centauri B 

      Lisogorskyi, Maksym; Jones, Hugh; Feng, Fabo (2019-06-01)
      The Alpha Centauri system is the primary target for planet search as it is the closest star system composed of a solar twin α CenA, a K-dwarf α Cen B, and an M-dwarf Proxima Centauri, which has a confirmed planet in the ...

    • AD Leonis : Radial velocity signal of stellar rotation or spin-orbit resonance? 

      Tuomi, Mikko; Jones, Hugh R. A.; Anglada-Escudé, Guillem; Butler, R. Paul; Kiraga, Marcin; Vogt, Steven S. (2018-04-16)
      AD Leonis is a nearby magnetically active M dwarf. We find Doppler variability with a period of 2.23 days, as well as photometric signals: (1) a short-period signal, which is similar to the radial velocity signal, albeit ...

    • Adaptive leaky integrator models of cerebellar Purkinje cells can learn the clustering of temporal patterns 

      Steuber, Volker; Willshaw, D. J. (1999-06)
      We have shown previously that the metabotropic glutamate receptor signalling network in a cerebellar Purkinje cell can implement adaptive postsynaptic delays. Here we present a leaky integrator version of the Purkinje cell ...

    • Adaptive Olfactory Encoding in Agents Controlled by Spiking Neural Networks 

      Oros, N.; Steuber, Volker; Davey, N.; Canamero, L.; Adams, R.G. (2008)
      We created a neural architecture that can use two different types of information encoding strategies depending on the environment. The goal of this research was to create a simulated agent that could react to two different ...

    • Adaptive Robot Mediated Upper Limb Training Using Electromyogram Based Muscle Fatigue Indicators 

      Thacham-Poyil, Azeemsha; Steuber, Volker; Amirabdollahian, Farshid (2020-05-29)
      Studies on improving the adaptability of upper limb rehabilitation training do not often consider the implications of muscle fatigue sufficiently. In this study, electromyogram features were used as fatigue indicators in ...

    • Address-Event Signal Processing: Silicon Retina, Cochlea and Olfaction A Review 

      Tayarani, Mohammad; Schmuker, Michael (2021-05-31)
      The nervous systems converts the physical quantities sensed by its primary receptors into trains of events that are then processed in the brain. The unmatched efficiency in information processing has long inspired engineers ...

    • AGN in dwarf galaxies: frequency, triggering processes and the plausibility of AGN feedback 

      Kaviraj, Sugata; Martin, Garreth; Silk, Joseph (2019-10-01)
      While active galactic nuclei (AGN) are considered to be key drivers of the evolution of massive galaxies, their potentially significant role in the dwarf-galaxy regime (M ∗ < 10 9 M ⊙) remains largely unexplored. We combine ...

    • AGN jet-induced feedback in galaxies - II : Galaxy colours from a multicloud simulation 

      Tortora, C.; Antonuccio-Delogu, V.; Romeo, A.D.; Becciani, U.; Kaviraj, S.; Silk, J. (2009-06-01)
      We study the feedback from an active galactic nucleus (AGN) on stellar formation within its host galaxy, mainly using one high-resolution numerical simulation of the jet propagation within the interstellar medium (ISM) of ...

    • AlH lines in the blue spectrum of Proxima Centauri 

      Pavlenko, Yakiv V.; Tennyson, Jonathan; Yurchenko, Sergei N.; Schmidt, Mirek R.; Jones, Hugh R. A.; Lyubchik, Yuri; Mascareño, A. Suárez (2022-11-30)
      The recently-computed ExoMol line lists for isotopologues of AlH are used to analyse the blue spectrum (4000-4500 {\AA}) of Proxima Cen (M5.5 V). Comparison of the observed and computed spectra enables the identification ...

    • ALMA observations of massive molecular gas reservoirs in dusty early-type galaxies 

      Sansom, A. E.; Glass, D. H. W.; Bendo, G. J.; Davis, T. A.; Rowlands, K.; Bourne, N.; Dunne, L.; Eales, S.; Kaviraj, S.; Popescu, C.; Smith, M.; Viaene, S. (2019-02-01)
      Unresolved gas and dust observations show a surprising diversity in the amount of interstellar matter in early-type galaxies. Using Atacama Large Millimetre/submillimeter Array (ALMA) observations we resolve the ISM in z ...

    • An ALMA survey of the S2CLS UDS field: optically invisible submillimetre galaxies 

      Smail, Ian; Dudzevičiūtė, U.; Stach, S. M.; Almaini, O.; Birkin, J. E.; Chapman, S. C.; Chen, Chian-Chou; Geach, J. E.; Gullberg, B.; Hodge, J. A.; Ikarashi, S.; Ivison, R. J.; Scott, D.; Simpson, Chris; Swinbank, A. M.; Thomson, A. P.; Walter, F.; Wardlow, J. L.; Werf, P. van der (2021-04-01)
      We analyse a robust sample of 30 near-infrared-faint (KAB > 25.3, 5σ) submillimetre galaxies (SMGs) selected from a 0.96 deg2 field to investigate their properties and the cause of their faintness in optical/near-infrared ...

    • An ALMA survey of the SCUBA-2 CLS UDS field: physical properties of 707 sub-millimetre galaxies 

      Dudzevičiūtė, U.; Smail, Ian; Swinbank, A. M.; Stach, S. M.; Almaini, O.; Cunha, E. da; An, Fang Xia; Arumugam, V.; Birkin, J.; Blain, A. W.; Chapman, S. C.; Conselice, C. J.; Coppin, K. E. K.; Dunlop, J. S.; Farrah, D.; Geach, J. E.; Gullberg, B.; Hartley, W. G.; Hodge, J. A.; Ivison, R. J.; Maltby, D. T.; Scott, D.; Simpson, C. J.; Walter, F.; Wardlow, J. L.; Weiss, A.; Werf, P. van der (2020-05)
      We analyse the physical properties of a large, homogeneously selected sample of ALMA-located sub-mm galaxies (SMGs) detected in the SCUBA-2 CLS 850-$\mu$m map of the UKIDSS/UDS field. This survey, AS2UDS, identified 707 ...

    • An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field : Dust attenuation in high-redshift Lyman break Galaxies 

      Koprowski, M. P.; Coppin, K. E. K.; Geach, J. E.; Dudzeviciute, U.; Smail, Ian; Almaini, O.; An, Fangxia; Blain, A. W.; Chapman, S. C.; Chen, Chian-Chou; Conselice, C. J.; Dunlop, J. S.; Farrah, D.; Gullberg, B.; Hartley, W.; Ivison, R. J.; Karska, A.; Maltby, D.; Michałowski, M. J.; Pope, A.; Salim, S.; Scott, D.; Swinbank, A. M.; Wardlow, J. L.; Werf, P. P. van der; Whitaker, K. E. (2020-03)
      We analyse 870um Atacama Large Millimetre Array (ALMA) dust continuum detections of 41 canonically-selected z~3 Lyman-break galaxies (LBGs), as well as 209 ALMA-undetected LBGs, in follow-up of SCUBA-2 mapping of the UKIDSS ...

    • An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field : number counts of submillimeter galaxies 

      Stach, S. M.; Smail, I.; Swinbank, A. M.; Geach, J. E.; An, F. X.; Almaini, O.; Arumugam, V.; Blain, A. W.; Chapman, S. C.; Conselice, C. J.; Cooke, E. A.; Coppin, K. E. K.; Dunlop, J. S.; Farrah, D.; Gullberg, B.; Hartley, W.; Ivison, R. J.; Maltby, D. T.; Michałowski, M. J.; Scott, D.; Wardlow, J. L.; Werf, P. van der (2018-06-25)
      We report the first results of AS2UDS, an 870 μm continuum survey with the Atacama Large Millimeter/Submillimeter Array (ALMA) of a total area of ∼50 arcmin 2 comprising a complete sample of 716 submillimeter sources drawn ...

    • An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field : Source catalogue and properties 

      Stach, S. M.; Dudzevičiūtė, U.; Smail, I.; Swinbank, A. M.; Geach, J. E.; An, F. X.; Almaini, O.; Arumugam, V.; Blain, A. W.; Chapman, S. C.; Conselice, C. J.; Cooke, E. A.; Coppin, K. E. K.; Cunha, E. da; Dunlop, J. S.; Farrah, D.; Gullberg, B.; Hodge, J. A.; Ivison, R. J.; Kocevski, Dale D.; Michałowski, M. J.; Miyaji, Takamitsu; Scott, D.; Wardlow, J. L.; Weiss, Axel; Werf, P. van der (2019-06-06)
      We present the catalogue and basic properties of sources in AS2UDS, an 870-\mum continuum survey with the Atacama Large Millimetre/sub-millimetre Array (ALMA) of 716 single-dish sub-millimetre sources detected in the ...