2008/07/31 by Xiang-Yu Wang, Zi-Gao Dai · 1 citation
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Earth Systems and Cosmic Evolution #Gamma-ray bursts and supernovae #astro-ph #hep-ph
paper · pdf · doi:10.1088/0004-637x/691/2/l67
published as Astrophys.J. 691(2009) L67-L71 · Accepted by ApJ Letters, some changes made following the referees' comments, conclusions unchanged. The paper was originally submitted to PRL on June 6 (2008); resubmitted to ApJL on Oct.1 (2008); accepted by ApJL on Dec. 9 (2008)
arxiv created 2008/12/09 · openalex publication_date 2009/01/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
Recently it was suggested that a photospheric component that results from internal dissipation occurring in the optically thick inner parts of relativistic outflows may be present in the prompt γ/X-ray emission of gamma-ray bursts or X-ray flashes. We explore high-energy neutrino emission in this dissipative photosphere model, assuming that the composition of the outflow is baryon dominated. We find that neutrino emission from a proton–proton collision process forms an interesting signature in the neutrino spectra. Under favorable conditions for the shock dissipation site, these low-energy neutrinos could be detected by km 3 detectors, such as Icecube. Higher-energy (≳10 TeV) neutrino emission from proton–proton collision and photopion production processes could be significantly suppressed for dissipation at relatively small radii due to efficient Bethe–Heitler cooling of protons and/or radiative cooling of the secondary mesons in the photosphere radiation. As the dissipation shocks continue further out, high-energy neutrinos from the photopion production process become dominant.