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Robert Henderson

Other affiliations: Heriot-Watt University, University of Glasgow, Broadcom  ...read more
Bio: Robert Henderson is an academic researcher from University of Edinburgh. The author has contributed to research in topics: Image sensor & Single-photon avalanche diode. The author has an hindex of 58, co-authored 440 publications receiving 13189 citations. Previous affiliations of Robert Henderson include Heriot-Watt University & University of Glasgow.


Papers
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K. C. Chambers, E. A. Magnier, Nigel Metcalfe, H. Flewelling, M. E. Huber, Christopher Waters, L. Denneau, Peter W. Draper, Daniel J. Farrow, D. P. Finkbeiner, C. Holmberg, J. Koppenhoefer, P. A. Price, A. Rest, Roberto P. Saglia, Edward F. Schlafly, Stephen J. Smartt, W. E. Sweeney, R. J. Wainscoat, W. S. Burgett, S. Chastel, T. Grav, J. N. Heasley, Klaus W. Hodapp, Robert Jedicke, Nick Kaiser, R. P. Kudritzki, G. A. Luppino, Robert H. Lupton, David G. Monet, John Morgan, Peter M. Onaka, Bernie Shiao, Christopher W. Stubbs, John L. Tonry, R. L. White, Eduardo Bañados, Eric F. Bell, Ralf Bender, Edouard J. Bernard, M. Boegner, F. Boffi, M. T. Botticella, Annalisa Calamida, Stefano Casertano, W.-P. Chen, X. Chen, Shaun Cole, Niall R. Deacon, C. Frenk, Alan Fitzsimmons, Suvi Gezari, V. Gibbs, C. Goessl, T. Goggia, R. Gourgue, Bertrand Goldman, Phillip Grant, Eva K. Grebel, Nigel Hambly, G. Hasinger, Alan Heavens, Timothy M. Heckman, Robert Henderson, Th. Henning, M. J. Holman, Ulrich Hopp, Wing-Huen Ip, S. Isani, M. Jackson, C. D. Keyes, Anton M. Koekemoer, Rubina Kotak, D. Le, D. Liska, K. S. Long, John R. Lucey, M. Liu, Nicolas F. Martin, G. Masci, Brian McLean, E. Mindel, P. Misra, E. Morganson, David Murphy, A. Obaika, Gautham Narayan, M. Nieto-Santisteban, Peder Norberg, John A. Peacock, E. A. Pier, Marc Postman, N. Primak, C. Rae, A. Rai, Adam G. Riess, A. Riffeser, H. W. Rix, Siegfried Röser, R. Russel, L. Rutz, Elena Schilbach, A. S. B. Schultz, Daniel Scolnic, Louis Gregory Strolger, Alexander S. Szalay, Stella Seitz, E. Small, K. W. Smith, D. R. Soderblom, P. Taylor, Robert R. Thomson, Andy Taylor, A. R. Thakar, J. Thiel, D. A. Thilker, D. Unger, Yuji Urata, Jeff A. Valenti, J. Wagner, T. Walder, Fabian Walter, S. Watters, S. Werner, W. M. Wood-Vasey, R. F. G. Wyse 
TL;DR: Pan-STARRS1 has carried out a set of distinct synoptic imaging sky surveys including the 3ππ$ Steradian Survey and the Medium Deep Survey in 5 bands as mentioned in this paper.
Abstract: Pan-STARRS1 has carried out a set of distinct synoptic imaging sky surveys including the $3\pi$ Steradian Survey and the Medium Deep Survey in 5 bands ($grizy_{P1}$). The mean 5$\sigma$ point source limiting sensitivities in the stacked 3$\pi$ Steradian Survey in $grizy_{P1}$ are (23.3, 23.2, 23.1, 22.3, 21.4) respectively. The upper bound on the systematic uncertainty in the photometric calibration across the sky is 7-12 millimag depending on the bandpass. The systematic uncertainty of the astrometric calibration using the Gaia frame comes from a comparison of the results with Gaia: the standard deviation of the mean and median residuals ($ \Delta ra, \Delta dec $) are (2.3, 1.7) milliarcsec, and (3.1, 4.8) milliarcsec respectively. The Pan-STARRS system and the design of the PS1 surveys are described and an overview of the resulting image and catalog data products and their basic characteristics are described together with a summary of important results. The images, reduced data products, and derived data products from the Pan-STARRS1 surveys are available to the community from the Mikulski Archive for Space Telescopes (MAST) at STScI.

1,257 citations

Journal ArticleDOI
Georges Aad1, Alexander Kupco1, Samuel Webb, Timo Dreyer  +2934 moreInstitutions (2)
TL;DR: Combined measurements of Higgs boson production cross sections and branching fractions arc are presented in this paper, based on the analyses of the Higgs particle decay modes H -> gamma gamma, ZZ...
Abstract: Combined measurements of Higgs boson production cross sections and branching fractions arc presented. The combination is based on the analyses of the Higgs boson decay modes H -> gamma gamma, ZZ ...

505 citations

Journal ArticleDOI
TL;DR: The database is described in detail, including the construction of the database, the provenance of the data, the schema, and how the database tables are related.
Abstract: This paper describes the organization of the database and the catalog data products from the Pan-STARRS1 $3\pi$ Steradian Survey. The catalog data products are available in the form of an SQL-based relational database from MAST, the Mikulski Archive for Space Telescopes at STScI. The database is described in detail, including the construction of the database, the provenance of the data, the schema, and how the database tables are related. Examples of queries for a range of science goals are included. The catalog data products are available in the form of an SQL-based relational database from MAST, the Mikulski Archive for Space Telescopes at STScI.

315 citations


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Christopher M. Bishop1
01 Jan 2006
TL;DR: Probability distributions of linear models for regression and classification are given in this article, along with a discussion of combining models and combining models in the context of machine learning and classification.
Abstract: Probability Distributions.- Linear Models for Regression.- Linear Models for Classification.- Neural Networks.- Kernel Methods.- Sparse Kernel Machines.- Graphical Models.- Mixture Models and EM.- Approximate Inference.- Sampling Methods.- Continuous Latent Variables.- Sequential Data.- Combining Models.

10,141 citations

Journal ArticleDOI
TL;DR: The second Gaia data release, Gaia DR2 as mentioned in this paper, is a major advance with respect to Gaia DR1 in terms of completeness, performance, and richness of the data products.
Abstract: Context. We present the second Gaia data release, Gaia DR2, consisting of astrometry, photometry, radial velocities, and information on astrophysical parameters and variability, for sources brighter than magnitude 21. In addition epoch astrometry and photometry are provided for a modest sample of minor planets in the solar system. Aims: A summary of the contents of Gaia DR2 is presented, accompanied by a discussion on the differences with respect to Gaia DR1 and an overview of the main limitations which are still present in the survey. Recommendations are made on the responsible use of Gaia DR2 results. Methods: The raw data collected with the Gaia instruments during the first 22 months of the mission have been processed by the Gaia Data Processing and Analysis Consortium (DPAC) and turned into this second data release, which represents a major advance with respect to Gaia DR1 in terms of completeness, performance, and richness of the data products. Results: Gaia DR2 contains celestial positions and the apparent brightness in G for approximately 1.7 billion sources. For 1.3 billion of those sources, parallaxes and proper motions are in addition available. The sample of sources for which variability information is provided is expanded to 0.5 million stars. This data release contains four new elements: broad-band colour information in the form of the apparent brightness in the GBP (330-680 nm) and GRP (630-1050 nm) bands is available for 1.4 billion sources; median radial velocities for some 7 million sources are presented; for between 77 and 161 million sources estimates are provided of the stellar effective temperature, extinction, reddening, and radius and luminosity; and for a pre-selected list of 14 000 minor planets in the solar system epoch astrometry and photometry are presented. Finally, Gaia DR2 also represents a new materialisation of the celestial reference frame in the optical, the Gaia-CRF2, which is the first optical reference frame based solely on extragalactic sources. There are notable changes in the photometric system and the catalogue source list with respect to Gaia DR1, and we stress the need to consider the two data releases as independent. Conclusions: Gaia DR2 represents a major achievement for the Gaia mission, delivering on the long standing promise to provide parallaxes and proper motions for over 1 billion stars, and representing a first step in the availability of complementary radial velocity and source astrophysical information for a sample of stars in the Gaia survey which covers a very substantial fraction of the volume of our galaxy.

8,308 citations

Journal ArticleDOI
TL;DR: In this article, a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors.
Abstract: On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of $\sim$1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg$^2$ at a luminosity distance of $40^{+8}_{-8}$ Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 Msun. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at $\sim$40 Mpc) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over $\sim$10 days. Following early non-detections, X-ray and radio emission were discovered at the transient's position $\sim$9 and $\sim$16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. (Abridged)

3,180 citations

Journal Article
TL;DR: In this paper, the ATLAS experiment is described as installed in i ts experimental cavern at point 1 at CERN and a brief overview of the expec ted performance of the detector is given.
Abstract: This paper describes the ATLAS experiment as installed in i ts experimental cavern at point 1 at CERN. It also presents a brief overview of the expec ted performance of the detector.

2,798 citations

01 May 2005

2,648 citations