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Showing 101-120 of 10,000 results
  1. On the Feasibility of Independent Detections of Optical Afterglows of GRBs

    The recent detection of optical afterglows (OAs, optical delayed emission) and optical transients (OTs, optical prompt emission) of gamma ray bursts...
    Conference paper
  2. Tools for Gamma-Ray Burst Data Mining

    Statisticalevidence exists for two or more gamma-ray burst (GRB) subclasses. Pattern recognition algorithms also find this. However, not all...
    Jon Hakkila, Robert S. Mallozzi, ... Charles A. Meegan in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  3. A Variety of Decays of Gamma-Ray Burst Pulses

    The main target of this study is the GRB light curve during the decay phase of long, bright pulses. As shown by Ryde & Svensson (2000; hereafter...
    Felix Ryde, Roland Svensson in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  4. Neutrino Astrophysics with the MACRO Detector

    A sample of 1197 neutrino induced upward-going muons is used to look for point-like sources and for space-time correlations with BATSE and BeppoSAX...
    Teresa Montaruli, Fabrizio Cei, ... Francesco Ronga in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  5. A Preview of the Swift UVOT Capabilities: Imaging and Lightcurves from XMM-Newton OM

    The Swift MIDEX mission, scheduled for launch on 2003, is expected to capture...
    S. Zane, K. O. Mason, ... M. McLelland in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  6. Discovery of a Redshifted Iron K-Line in the X-Ray Afterglow of GRB 000214

    We report on the BeppoSAX observation of the X-ray afterglow of GRB 000214 (“Valentine’s Day Burst”). A strong emission line is detected (3...
    L. A. Antonelli1, M. Vietri, ... G. C. Perola in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  7. The Light Curves of GRB 990123 and GRB 990510

    We have collected all published photometry for GRBs 990123 and 990510, the first two gamma-ray bursts where breaks were observed in their afterglow...
    G. Björnsson1, S. Holland, ... B. Thomsen in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  8. Optical Observations of the Dark Gamma-Ray Burst GRB 000210

    We report on opticalobserv ations on GRB 000210 obtained with the 2.56-m Nordic Optical Telescope and the 1.54-m Danish Telescope starting 12.4 hours...
    Javier Gorosabel, Jens Hjorth, ... Niels Lund in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  9. Physical Constraints from Broadband Afterglow Fits: GRB000926 as an Example

    We develop a model to fit the broadband afterglows of GRBs from the intrinsic parameters of the fireball’s synchrotron emission, and apply it to a...
    Sarah A. Yost, Re’em Sari, ... Paul A. Price in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  10. Observations of Gamma-Ray Bursts with the Rossi X-Ray Timing Explorer

    The role of the Rossi X-ray Timing Explorer (RXTE) in the study of Gamma-ray Bursts (GRBs) is reviewed. Through April 2001, the All-Sky Monitor (ASM)...
    Hale Bradt, Alan M. Levine, ... Toshi Takeshima in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  11. Gamma-Ray Burst Models: The Central Engine

    Twinkle, twinkle superstar. How I wonder what you are. [12]
    Conference paper
  12. The Close Environment of GRB

    We discuss three aspects of the interaction between GRB and their immediate surroundings. Pair production induced by the initial gamma-rays in the...
    Conference paper
  13. A Deep, High-Resolution Imaging Survey of GRB Host Galaxies

    We have begun a survey of GRB host galaxies using HST/STIS to obtain very deep, high-resolution images. The primary aims are to constrain progenitor...
    N. R. Tanvir, S. Holland, ... B. Thomsen in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  14. Determining the Gamma-Ray Burst Rate as a Function of Redshift

    We exploit the 14 gamma-ray bursts (GRBs) with known redshifts z and the 7 GRBs for which there are constraints on z to determine the GRB rate...
    Nevin Weinberg, Carlo Graziani, ... Daniel E. Reichart in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  15. Progenitors of GRBs Originated in the Dense Star Clusters

    The suggestion formulated in the title of this paper arised first to explain the origin of the giant (170-300 pc in radii) stellar arcs in the region...
    Conference paper
  16. Theory of GRB Afterglow

    The most interesting current open question in the theory of GRB afterglow is the propagation of jetted afterglows during the sideway expansion phase....
    T. Piran, J. Granot in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  17. Effects of Free Neutrons on Gamma-Ray Bursts

    We consider a general case of nucleon (neutrons + protons) - loaded fireballs. In our analysis of the relative motion of neutrons and protons in the...
    E. V. Derishev, V. V. Kocharovsky, Vl V. Kocharovsky in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  18. AGILE and Gamma-Ray Bursts

    The AGILE astrophysics mission planned to be operational in 2003 will significantly contribute to the study of Gamma-Ray Bursts. AGILE is equipped...
    M. Tavani, G. Barbiellini, ... D. Zanello in Gamma-Ray Bursts in the Afterglow Era
    Conference paper
  19. Astroparticle Physics with the L3+C Detector

    The L3+C detector, which was located at the CERN electron-positron collider, LEP, has been used to collect a total of...
    Conference paper
  20. Alpha: A Constant That Is Not a Constant?

    We review the observational information on the constancy of the fine structure constant...
    Conference paper
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