2009/01/31 by Cecilia Lunardini · 5 citations
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #Electron #Flux (metallurgy) #Neutrino #Neutrino Physics Research #Nuclear physics #Observable #Physics #Quantum mechanics #Supernova #astro-ph.SR #hep-ph
paper · pdf · doi:10.1103/physrevlett.102.231101
published as Phys.Rev.Lett.102:231101,2009 · PDFLaTeX, 4 pages, 3 figures. New version has improved text and graphics, references added. Results unchanged
openalex publication_date 2009/06/10 · arxiv created 2009/07/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
I study the diffuse flux of electron antineutrinos from stellar collapses with direct black hole formation (failed supernovae). This flux is more energetic than that from successful supernovae, and therefore it might contribute substantially to the total diffuse flux above realistic detection thresholds. The total flux might be considerably higher than previously thought, and approach the sensitivity of Super-Kamiokande. For more conservative values of the parameters, the flux from failed supernovae dominates for antineutrino energies above 30-45 MeV, with potential to give an observable spectral distortion at megaton detectors.