[astro-ph/0511628] Recent Supernovae Ia observations tend to
Posted: November 22 2006
Further re: SN-less GRB:
One degree off axis at 24-light days gives a delay near 200 s. For
a SN-less long-duration/soft spectrum GRB, there has to be
just enough polar overlayer to soften its spectrum (as all GRBs must
start as hard/short), but not enough produce much 56Ni by
burn around the non-polar regions. This is an important clue
about a mechanism we'll be spending the first half of this
century unravelling. Would be too much to ask that an NS-NS
merger produced a long/soft GRB!
Re: rotation in SN Ia 2003fg suggested by Howell to avoid DD
hypothesis: desperation.
One degree off axis at 24-light days gives a delay near 200 s. For
a SN-less long-duration/soft spectrum GRB, there has to be
just enough polar overlayer to soften its spectrum (as all GRBs must
start as hard/short), but not enough produce much 56Ni by
burn around the non-polar regions. This is an important clue
about a mechanism we'll be spending the first half of this
century unravelling. Would be too much to ask that an NS-NS
merger produced a long/soft GRB!
Re: rotation in SN Ia 2003fg suggested by Howell to avoid DD
hypothesis: desperation.