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Related Experiment Videos

Neutrino Event Rates from Gamma-Ray Bursts.

Halzen, Hooper

    The Astrophysical Journal
    |December 1, 1999
    PubMed
    Summary
    This summary is machine-generated.

    High-energy neutrinos from gamma-ray bursts are rare per event, but large fluctuations mean a few bright bursts significantly increase detection rates. This simplifies observing these cosmic phenomena.

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    Area of Science:

    • Astrophysics
    • Particle Physics

    Background:

    • Gamma-ray bursts (GRBs) are powerful cosmic explosions.
    • The relativistic fireball model describes GRB emissions.
    • High-energy neutrinos are potential probes of extreme astrophysical environments.

    Purpose of the Study:

    • Recalculate the diffuse flux of high-energy neutrinos from GRBs.
    • Assess the detectability of these neutrinos.
    • Investigate the impact of burst-to-burst fluctuations on event rates.

    Main Methods:

    • Utilized the relativistic fireball model.
    • Calculated neutrino event rates for a 1 km² detector.
    • Analyzed the distribution of burst brightness and its effect on observed rates.

    Main Results:

    Related Experiment Videos

    • Confirmed low average neutrino events per GRB (approx. 10⁻²).
    • Demonstrated that event rates are dominated by large burst-to-burst fluctuations.
    • Found that a few exceptionally bright bursts can increase detectable event rates by an order of magnitude or more.

    Conclusions:

    • Despite low average rates, GRB neutrinos are potentially detectable due to significant fluctuations.
    • Bright bursts simplify the detection of high-energy neutrinos from GRBs.
    • This finding enhances the prospects for multi-messenger astronomy with GRBs.