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High-energy neutrinos from gamma ray bursts
Charles D Dermer1, Armen Atoyan
1Code 7653, Naval Research Laboratory, Washington, D.C. 20375-5352, USA.
Physical Review Letters
|August 26, 2003
Summary
High-energy neutrinos from gamma-ray bursts (GRBs) were studied. Detecting specific neutrino energies could support the supranova model or indicate nuclear production, with powerful bursts offering the best detection prospects.
Area of Science:
- Astrophysics
- Particle Physics
- High-Energy Astrophysics
Background:
- Gamma-ray bursts (GRBs) are powerful cosmic explosions.
- Neutrino production mechanisms in GRBs are not fully understood.
- Two leading models for GRB energy release are the collapsar and supranova models.
Purpose of the Study:
- To investigate high-energy neutrino production in GRBs.
- To differentiate between the collapsar and supranova models based on neutrino signatures.
- To determine the conditions necessary for detecting neutrinos from GRBs.
Main Methods:
- Detailed calculations of photomeson neutrino production.
- Analysis of neutrino production in the collapsar model (internal synchrotron radiation).
- Analysis of neutrino production in the supranova model (external pulsar-wind synchrotron radiation).
Main Results:
- Neutrino detection at >10 TeV could support the supranova model for GRBs with high Doppler factors (>200).
- Neutrinos at <10 TeV may originate from nuclear production.
- Detection of muon neutrinos (nu(mu)) is feasible only from the most powerful GRBs (fluence >3 x 10(-4) erg cm(-2)).
Conclusions:
- Neutrino observations offer a unique probe of GRB physics.
- Distinguishing between GRB models is possible through multi-messenger astronomy.
- Future neutrino observatories may detect signals from powerful GRBs.