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English Physics Astrophysics and astroparticles

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Showing 61-80 of 10,000 results

  1. Modelling Synchrotron Outbursts in 3C 273

    We present an improved approach to derive the observed evolution of a typical synchrotron outburst in 3C 273. The method consists in a simultaneous...
    Marc Türler in Black Holes in Binaries and Galactic Nuclei: Diagnostics, Demography and Formation
    Conference paper

  3. Simulations of Solar AO Systems

    In this paper, first we compare the two kinds of algorithms that are being used in solar AO systems to sense a distorted wave-front through...
    R. Sridharan, A. Raja Bayanna, P. Venkatakrishnan in Science with Adaptive Optics
    Conference paper

  4. Selected Examples of Solar and Extra-Solar Planetary Science with AO

    High spatial resolution planetary science has seen a large boost from AO observations complementing space missions. Adaptive optics is particularly...
    Laird M. Close, Rainer Lenzen, ... Markus Hartung in Science with Adaptive Optics
    Conference paper

  5. Quality Control and Data Flow Operations of NAOS-CONICA

    The verification of data and the monitoring of instrument performance – known collectively as quality control (QC) – are an integral part of the...
    Wolfgang Hummel, Chris Lidman, ... Danuta Dobrzycka in Science with Adaptive Optics
    Conference paper

  6. NACO and PUEO-GriF Investigating Small Scale Structures and Velocity Fields in OMC1

    Infrared observations of the OMC1 star forming region obtained at the CFHT and at the ESO VLT, both in imaging mode with adaptive optics, are...
    Jean Louis Lemaire, David Field in Science with Adaptive Optics
    Conference paper

  7. A Search for Close Companions in Sco OB2

    Using adaptive optics we study the binary population in the nearby OB association Scorpius OB2. We present the first results of our near-infrared...
    Thijs Kouwenhoven, Anthony Brown, ... Alessia Gualandris in Science with Adaptive Optics
    Conference paper

  8. Lyot Coronagraphy at the Palomar and Phase-Mask Coronagraphy at the VLT

    In this paper, we report on observations of faint companions and circumstellar disks at the Palomar 200-inch telescope. As a result, we present...
    Anthony Boccaletti, Jean-Charles Augereau, ... Pierre Baudoz in Science with Adaptive Optics
    Conference paper

  9. NACO Observations of NGC 1068

    We present various recent results obtained with adaptive optics systems on the very central region of NGC 1068: Grif long-slit spectroscopy in K band...
    Damien Gratadour, Daniel Rouan, ... François Lacombe in Science with Adaptive Optics
    Conference paper

  10. AO-Assisted Observations of Ultra-Compact H II Regions

    High-spatial resolution observations in the near-infrared (NIR) with Adaptive Optics (AO) represent a powerful tool to investigate massive star...
    Elena Puga, Markus Feldt, ... Bringfried Stecklum in Science with Adaptive Optics
    Conference paper

  11. Near-Infrared High Resolution Spectroscopy of High-z QSO Absorption Systems with the Subaru Adaptive Optics System

    We are conducting a near-infrared (1.0–1.35 μm) high resolution spectroscopic survey of high-z QSOs to study the QSO absorption systems at high...
    Naoto Kobayashi, Takuji Tsujimoto, Yosuke Minowa in Science with Adaptive Optics
    Conference paper

  12. Mining the Local Universe: the QSO Space Density

    We present progress results of a new survey for bright QSOs (V < 14.5, R < 15.4, B J...
    Stefano Cristiani, Andrea Grazian, ... Christopher Corbally in Mining the Sky
    Conference paper

  13. Field Galaxy Evolution from the Munich Near-Infrared Cluster Survey (MUNICS)

    The Munich Near-IR Cluster Survey (MUNICS) is a K’-selected survey covering 1 square degree in the K’ and J near-infrared bands with complementary...
    Georg Feulner, Niv Drory, ... Claudia Mendes de Oliveira in Mining the Sky
    Conference paper

  14. Nonlinear Peculiar-Velocity Analysis and PCA

    We allow for nonlinear effects in the likelihood analysis of peculiar velocities, and obtain...
    Avishai Dekel, Amiram Eldar, ... Idit Zehavi in Mining the Sky
    Conference paper

  15. Strong Constraints on Cosmology from Galaxy Clusters

    In this work we show how galaxy clusters can be used to discriminate among different cosmological models. We have used available X-ray & optical...
    J. M. Diego, E. Martínez-González, ... J. Silk in Mining the Sky
    Conference paper

  16. FORCE: FORtran for Cosmic Errors

    We review the theory of cosmic errors we have recently developed for count-in-cells statistics. The corresponding FORCE package provides a simple and...
    Stéphane Colombi, István Szapudi in Mining the Sky
    Conference paper

  17. Automated Classification Techniques for Large Spectroscopic Surveys

    With the onset of large, systematically selected spectroscopic surveys we have the opportunity to understand the distribution and evolution of...
    A. J. Connolly, F. Castander, ... C. W. Yip in Mining the Sky
    Conference paper

  18. Near-Infrared Integral Field Spectroscopy of Damped Lyman- $\alpha$ Systems

    We assess the feasibility of detecting star formation in damped Lyman- $\alpha$...
    Andrew Bunker, Annette Ferguson, ... Rachel Somerville in Mining the Sky
    Conference paper

  19. Fast Algorithms and Efficient Statistics: N-Point Correlation Functions

    We present here a new algorithm for the fast computation of N-Point correlation functions in large astronomical data sets. The algorithm is based on...
    Andrew W. Moore, Andy J. Connolly, ... Larry Wasserman in Mining the Sky
    Conference paper

  20. Noise Estimation in CMB Time-Streams and Fast Iterative Map-Making

    We describe here an iterative method for jointly estimating the noise power spectrum from a CMB experiment’s time-ordered data, together with the...
    S. Prunet, P. A. R. Ade, ... N. Vittorio in Mining the Sky
    Conference paper
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