Gamma-ray burst arrival time localizations: Simultaneous observations by Mars Observer, Compton Gamma Ray Observatory, and Ulysses

J. G. Laros, W. V. Boynton, K. C. Hurley, C. Kouveliotou, M. L. McCollough, G. J. Fishman, C. A. Meegan, D. M. Palmer, T. L. Cline, R. D. Starr, J. I. Trombka, M. Boer, M. Niel, A. E. Metzger

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Between 1992 October 4 and 1993 August 1, concurrent coverage by the Compton Gamma Ray Observatory (CGRO), Mars Observer (MO), and Ulysses spacecraft was obtained for 78 gamma-ray bursts (GRBs). Although most of these were below the MO and Ulysses thresholds, nine were positively detected by all three spacecraft, with data quality adequate for quantitative localization analysis. All were localized independently to ∼2° accuracy by the CGRO Burst and Transient Source Experiment (BATSE). We computed arrival-time error boxes with larger dimensions ranging from a few arcminutes to the diameters of the BATSE-only boxes and with smaller dimensions in the arcminute range. Three events are of particular interest: GB 930704 (BATSE 2428) has been described as a possible repeater. The arrival-time information is consistent with that hypothesis, but only just so. The GB 930706 (2431) box, at ∼1′ × 4′, is the only one this small obtained since Pioneer Venus Orbiter (PVO) entered the Venusian atmosphere in 1992 October. Sensitive radio and optical observations of this location were made within 8 and 9 days of the burst, but no counterpart candidates were identified. GB 930801 (2477) is the first GRB that had its localization improved by taking into account BATSE Earth occultation.

Original languageEnglish (US)
Pages (from-to)157-161
Number of pages5
JournalAstrophysical Journal, Supplement Series
Volume110
Issue number1
DOIs
StatePublished - May 1997

Keywords

  • Gamma rays: bursts
  • Gamma rays: observations

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Laros, J. G., Boynton, W. V., Hurley, K. C., Kouveliotou, C., McCollough, M. L., Fishman, G. J., Meegan, C. A., Palmer, D. M., Cline, T. L., Starr, R. D., Trombka, J. I., Boer, M., Niel, M., & Metzger, A. E. (1997). Gamma-ray burst arrival time localizations: Simultaneous observations by Mars Observer, Compton Gamma Ray Observatory, and Ulysses. Astrophysical Journal, Supplement Series, 110(1), 157-161. https://doi.org/10.1086/312993