re gamma ray bursters where are they in article ethanb apr ptolemy astro washington edu ethanb ptolemy astro washington edu ethan bradford writes in article steinly apr topaz ucsc edu steinly topaz ucsc edu steinn sigurdsson writes the problem with oort cloud sources is that absolutely no plausible mechanism has been proposed it would have to involve new physics as far as i can tell closest to conventional oort sources is a model of b field pinching by comets it s got too many holes in it to count but at least it was a good try so you have a plausible model for grb s at astronomical distances i don t have any plausible models for grbs at any distances recent observations have just about ruled out the merging neutron star hypothesis which had a lot of problems anyhow we have to look for implausible models and what is fundamentally allowed independent of models hmm the superbowl burst has been claimed in press releases to cast doubt on the merging ns hypothesis from what i ve read and i haven t seen the papers only the press i d say it is consistent with some of the merging ns models a paper on the possibility of grb s in the oort cloud just came through the astrophysics abstract service to get a copy of this here is the abstract of that paper indicator to these events all possible sources which are isotropically distributed should remain under consideration this is why the oort cloud of comets is kept on the list although there is no known mechanism for generating grbs from cometary nuclei unlikely as it may seem the possibility that grbs originate in the solar cometary cloud cannot be excluded until it is disproved this does not propose a mechanism for grbs in the oort and no anti matter annihilation does not fit the spectra at least as far as i understand annihilation spectra big difference that s ignoring the question of how you fit a distribution to the oort distribution when the oort distribution is not well known in particular comet aphelia which are not well known are not a good measure of the oort cloud distribution steinn sigurdsson lick observatory steinly lick ucsc edu standard disclaimer the laws of gravity are very very strict and you re just bending them for your own benefit b b
