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New Class of High-Energy Transients from Crashes of Supernova Ejecta with Massive Circumstellar Material Shells

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arxiv 1012.2834 v2 pith:AUVGRZWW submitted 2010-12-13 astro-ph.HE astro-ph.COhep-ph

New Class of High-Energy Transients from Crashes of Supernova Ejecta with Massive Circumstellar Material Shells

Kohta Murase , Todd A. Thompson , Brian C. Lacki , John F. Beacom This is my paper
classification astro-ph.HE astro-ph.COhep-ph
keywords shellscircumstellarclassejectainfraredmassivematerialoptical
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A new class of core-collapse supernovae (SNe) has been discovered in recent years by optical/infrared surveys; these SNe suggest the presence of one or more extremely dense (~10^5-10^11 cm^-3) shells of circumstellar material (CSM) on 10^2-10^4 AU scales. We consider the collisions of the SN ejecta with these massive CSM shells as potential cosmic-ray (CR) accelerators. If ~10% of the SN energy goes into CRs, multi-TeV neutrinos and/or GeV-TeV gamma rays almost simultaneous with the optical/infrared light curves are detectable for SNe at <20-30 Mpc. A new type of coordinated multi-messenger search for such transients of duration ~1 - 10 months is required; these may give important clues to the physical origin of such SNe and to CR acceleration mechanisms.

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