Comment on

• A new gamma-ray burst classification scheme from GRB 060614.

  Gehrels N, Norris JP, Barthelmy SD, Granot J, Kaneko Y, Kouveliotou C, Markwardt CB, Mészáros P, Nakar E, Nousek JA, O'Brien PT, Page M, Palmer DM, Parsons AM, Roming PW, Sakamoto T, Sarazin CL, Schady P, Stamatikos M, Woosley SE. Gehrels N, et al. Nature. 2006 Dec 21;444(7122):1044-6. doi: 10.1038/nature05376. Nature. 2006. PMID: 17183315
• No supernovae associated with two long-duration gamma-ray bursts.

  Fynbo JP, Watson D, Thöne CC, Sollerman J, Bloom JS, Davis TM, Hjorth J, Jakobsson P, Jørgensen UG, Graham JF, Fruchter AS, Bersier D, Kewley L, Cassan A, Cerón JM, Foley S, Gorosabel J, Hinse TC, Horne KD, Jensen BL, Klose S, Kocevski D, Marquette JB, Perley D, Ramirez-Ruiz E, Stritzinger MD, Vreeswijk PM, Wijers RA, Woller KG, Xu D, Zub M. Fynbo JP, et al. Nature. 2006 Dec 21;444(7122):1047-9. doi: 10.1038/nature05375. Nature. 2006. PMID: 17183316
• An enigmatic long-lasting gamma-ray burst not accompanied by a bright supernova.

  Della Valle M, Chincarini G, Panagia N, Tagliaferri G, Malesani D, Testa V, Fugazza D, Campana S, Covino S, Mangano V, Antonelli LA, D'Avanzo P, Hurley K, Mirabel IF, Pellizza LJ, Piranomonte S, Stella L. Della Valle M, et al. Nature. 2006 Dec 21;444(7122):1050-2. doi: 10.1038/nature05374. Nature. 2006. PMID: 17183317
• A novel explosive process is required for the gamma-ray burst GRB 060614.

  Gal-Yam A, Fox DB, Price PA, Ofek EO, Davis MR, Leonard DC, Soderberg AM, Schmidt BP, Lewis KM, Peterson BA, Kulkarni SR, Berger E, Cenko SB, Sari R, Sharon K, Frail D, Moon DS, Brown PJ, Cucchiara A, Harrison F, Piran T, Persson SE, McCarthy PJ, Penprase BE, Chevalier RA, MacFadyen AI. Gal-Yam A, et al. Nature. 2006 Dec 21;444(7122):1053-5. doi: 10.1038/nature05373. Nature. 2006. PMID: 17183318