arXiv:1605.04660 [astro-ph.HE]AbstractReferencesReviewsResources Classifications Subjects Themes Keywords black hole central engine, ultra-long gamma-ray burst 111209a, associated supernova 2011kl, grb 111209a/sn 2011kl Tags Journal Information Publisher Journal Year Month Volume Number Pages DOI URL Miscellaneous Typesetting Pages Language License Submit Reset