Constraints on high-energy neutrino emission from SN 2008D

Debanjan Bose, Stijn Buitink, Catherine De Clercq, Olbren Depaepe, Daan Hubert, Mathieu Labare, Alfio Rizzo, Erik Strahler, Nicolaas Van Eijndhoven

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

SN 2008D, a core collapse supernova at a distance of 27 Mpc, was serendipitously discovered by the Swift satellite through an associated X-ray flash. Core collapse supernovae have been observed in association with long gamma-ray bursts and X-ray flashes and a physical connection is widely assumed. This connection could imply that some core collapse supernovae possess mildly relativistic jets in which high-energy neutrinos are produced through proton-proton collisions. The predicted neutrino spectra would be detectable by Cherenkov neutrino detectors like IceCube. A search for a neutrino signal in temporal and spatial correlation with the observed X-ray flash of SN 2008D was conducted using data taken in 2007-2008 with 22 strings of the IceCube detector. Events were selected based on a boosted decision tree classifier trained with simulated signal and experimental background data. The classifier was optimized to the position and a 'soft jet' neutrino spectrum assumed for SN 2008D. Using three search windows placed around the X-ray peak, emission time scales from 100 - 10000 s were probed. No events passing the cuts were observed in agreement with the signal expectation of 0.13 events. Upper limits on the muon neutrino flux from core collapse supernovae were derived for different emission time scales and the principal model parameters were constrained.
Original languageEnglish
Number of pages8
JournalAstronomy & Astrophysics
Volume527
Publication statusPublished - 2011

Keywords

  • core collapse supernovae
  • SN 2008D
  • cosmic neutrinos
  • SN-GRB connection
  • high-energy neutrinos

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