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Precise GRB source locations from the renewed interplanetary network
Hurley, K.; Kouveliotou, C.; Cline, T. L. +14 more
A new interplanetary network (IPN) is made possible by the modification of the NEAR mission, now at 2 AU distance. With Ulysses and the near-Earth GRB monitors, this fully long-baseline network will produce GRB localizations at a rate of about one per week, with accuracies varying from several to tens of arc minutes. Given the delays inherent in t…
The peak flux distribution of bright gamma-ray bursts measured with ULYSSES
Hurley, K.; Atteia, J. -L.; Boër, M.
Observations of gamma-ray burst afterglows have shown that these events come from formidable explosions at cosmological distances. If the most distant GRBs seen by BATSE have redshifts of the order of 3-6 (e.g. GB 971214), it is a coincidence that the bright end of the GRB intensity distribution displays the -3/2 slope expected for a Euclidean dis…
Determination of interstellar helium parameters from the ULYSSES-NEUTRAL GAS experiment: Method of data analysis.
Rosenbauer, H.; Witte, M.; Banaszkiewicz, M.
The GAS instrument on board the ULYSSES spacecraft has, for the first time, measured directly the interstellar flux of helium atoms in the inner solar system. From the locally measured angular distribution of the flux, the task is to derive the five parameters of the Maxwellian distribution function: density, bulk velocity vector, and temperature …
ULYSSES precise localizations of gamma-ray bursts.
Cline, T.; Hurley, K.; Kouveliotou, C. +10 more
The Ulysses mission is presently about 5 AU from Earth, in the vicinity of Jupiter. It carries a gamma-ray burst detector sensitive to ≈ 15 - 150 keV X-rays, with time resolution down to 8 ms. for the purpose of high accuracy burst localization by the time-of-arrival method. This spacecraft, which is farther from Earth than any previous mission wi…
The ULYSSES solar wind plasma experiment
McComas, D. J.; Goldstein, B. E.; Bame, S. J. +5 more
The scientific objectives of the Ulysses solar wind plasma experiment, termed the Solar Wind Observations Over the Poles of the Sun (SWOOPS) include measurements of the solar-wind global properties, the nonlinear MHD disturbances in the solar wind, the internal state of the solar wind plasma, and the solar-wind interaction with Jupiter's magnetic …
The magnetic field investigation on the ULYSSES mission - Instrumentation and preliminary scientific results
Balogh, A.; Tsurutani, B. T.; Forsyth, R. J. +5 more
A fundamental feature of the heliosphere is the three-dimensional structure of the interplanetary magnetic field. The magnetic field investigation on Ulysses, the first space probe to explore the out-of-ecliptic and polar heliosphere, aims at determining the large-scale features and gradients of the field, as well as the heliolatitude dependence o…
The Solar Wind Ion Composition Spectrometer
Livi, S.; Balsiger, H.; Geiss, J. +21 more
The Solar Wind Ion Composition Spectrometer (SWICS) on Ulysses is designed to determine uniquely the elemental and ionic-charge composition, and the temperatures and mean speeds of all major solar-wind ions, from H through Fe, at solar wind speeds ranging from 175 km/s (protons) to 1280 km/s (Fe(8+)). The instrument, which covers an energy per cha…
The ULYSSES Cosmic Ray and Solar Particle Investigation
Balogh, A.; Sierks, H.; Kunow, H. +28 more
The Ulysses experimental program termed Cosmic Ray and Solar Particle Investigation (COSPIN) is described, with special attention given to the scientific objectives of the COSPIN, the measurements performed, the initial postlaunch results, and the characteristics of the individual COSPIN instruments. The instrument package of the COSPIN experiment…
The ULYSSES Mission
Smith, E. J.; Marsden, R. G.; Page, D. E. +1 more
The Unified Radio and Plasma wave investigation
de Conchy, Y.; Goetz, K.; Desch, M. D. +7 more
The scientific objectives of the Ulysses Unified Radio and Plasma wave (URAP) experiment are twofold: (1) the determination of the direction, angular size, and polarization of radio sources for remote sensing of the heliosphere and the Jovian magnetosphere and (2) the detailed study of local wave phenomena, which determine the transport coefficien…