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  1. No Access

    Article

    The HEAO-3 Cosmic Ray Isotope spectrometer

    This paper describes the Cosmic Ray Isotope instrument launched aboard the HEAO-3 satellite on September 20, 1979. The primary purpose of the experiment is to measure the isotopic composition of cosmic ray nuc...

    M. Bouffard, J. J. Engelmann, L. Koch, A. Soutoul… in Astrophysics and Space Science (1982)

  2. No Access

    Article

    Mission aspects of GRASP ESA's prospective gamma-ray astronomy satellite

    Mission aspects of the project GRASP (Gamma-Ray Astronomy with Spectroscopy and Positioning) are described as documented in the ESA assessment study at the end of 1986. The goals of this study addressed scient...

    C. Winkler, G. Tomaschek, G. F. Bignami, G. Villa, A. J. Dean… in Space Science Reviews (1989)

  3. No Access

    Article

    The GRASP telescope

    The GRASP mission Gamma-Ray Astronomy with Spectroscopy and Positioning addresses the scientific goals of fine spectroscopy with imaging and accurate positioning of gamma-ray sources, an unexplored area within...

    G. F. Bignami, A. J. Dean, Ph. Durouchoux, K. Hurley, N. Lund… in Space Science Reviews (1989)

  4. No Access

    Chapter and Conference Paper

    Map** the Galactic Center Region with Grasp

    The GRASP mission (Gamma-ray Astronomy with Spectroscopy and Positioning) is currently under study as an ESA space astronomy mission to be launched in the mid 90’s. GRASP is designed as a high quality spectral im...

    Ph. Durouchoux, G. Bignami, A. Dean, N. Lund, B. McBreen… in The Center of the Galaxy (1989)

  5. No Access

    Article

    Study of WATCH GRB error boxes

    We have studied the first WATCH GRB Catalogue ofγ-ray Bursts in order to find correlations between WATCH GRB error boxes and a great variety of celestial objects present in 33 different catalogues. No particular ...

    J. Gorosabel, A. J. Castro-Tirado, N. Lund, S. Brandt… in Astrophysics and Space Science (1995)

  6. No Access

    Article

    Review of GRANAT observations of gamma-ray bursts

    The GRANAT observatory was launched into a high apogee orbit on 1 December, 1989. Three instruments onboard GRANAT - PHEBUS, WATCH and SIGMA are able to detect gamma-ray bursts in a very broad energy range fro...

    O. Terekhov, D. Denissenko, R. Sunyaev, S. Sazonov… in Astrophysics and Space Science (1995)

  7. No Access

    Article

    Deka-keV X-ray emission associated with the onset of radio noise storms

    Radio noise storms show that suprathermal electrons (a few tens of keV) are present in the vicinity of active regions during several hours or even a few days. Where and how these electrons are energized is not...

    N. Crosby, N. Vilmer, N. Lund, K. -L. Klein, R. Sunyaev in Solar Physics (1996)

  8. No Access

    Chapter and Conference Paper

    Super-eddington luminosity in the bursting pulsar GRO J1744-28. GRANAT/WATCH results

    We present the results of GRANAT/WATCH observations of the BATSE bursting pulsar GRO J1744-28 in January – March 1996, during an intense outburst of this transient. The observations started in mid-January, exa...

    S. Y. Sazonov, R. A. Sunyaev, N. Lund in Accretion Disks — New Aspects (1997)

  9. No Access

    Article

    Optical behaviour of XTE J1550-564 and XTE J1859+226 from outburst to quiescence

    We present here the optical light curves of the Soft X-ray TransientsXTE J1550-564 and XTEJ1859+226 from outburst to quiescence

    C. Sánchez-Fernández, A. J. Castro-Tirado, A. Giménez… in Astrophysics and Space Science (2001)

  10. No Access

    Chapter and Conference Paper

    Optical Behaviour of XTE J1550–564 and XTE J1859+226 from Outburst to Quiescence

    We present here the optical light curves of the Soft X-ray Transients XTE J1550–564 and XTEJ1859+226 from outburst to quiescence

    C. Sánchez-Fernández, A. J. Castro-Tirado, A. Giménez, C. Zurita… in Microquasars (2001)

  11. No Access

    Article

    Observation of quasi-periodic pulsations in the solar flare SF 900610

    A quasi-periodic component was found at the maximum of the X-ray light curve for the June 10, 1990 solar flare detected by the Granat observatory. The pulsation period was 143.2±0.8 s. The intensity of the pul...

    O. V. Terekhov, A. V. Shevchenko, A. G. Kuz’min, S. Yu. Sazonov… in Astronomy Letters (2002)

  12. No Access

    Article

    Localization of the solar flare SF900610 in X-rays with the WATCH instrument of the GRANAT observatory

    During the solar flare of June 10, 1990, the WATCH instrument of the GRANAT space observatory obtained 110 localizations of the X-ray source in the X-ray range 8–20 keV. Its coordinates were measured with an a...

    O. V. Terekhov, A. G. Kuzmin, A. V. Shevchenko, S. Yu. Sazonov… in Astronomy Letters (2002)