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From: HVAC on 6 Nov 2009 14:49 "Henry Wilson DSc ." <HW@..> wrote in message news:j7t7f5l8mp9rhiv6us7g9tu2o5vu210r6h(a)4ax.com... > > Wormey, what exactly causes a SN to explode? The short answer is gravity. If you want I can go further into the details. -- The world will scream out, "Help Us!" I'll answer, "No".
From: Androcles on 6 Nov 2009 16:24 "Henry Wilson DSc ." <HW@..> wrote in message news:6609f5l470q2k3fhinr38fi87fau9ctmpn(a)4ax.com... > On Fri, 06 Nov 2009 18:26:30 GMT, Sam Wormley <swormley1(a)mchsi.com> wrote: > >>Henry Wilson DSc wrote: >> >>> >>> Wormey, what exactly causes a SN to explode? >> >> Contributors include shock wave bounce and a tremendous outpouring of >> neutrinos. >> >> In the case of SN 1987A >> o total anti-neutrino energy 3 x 10^52 erg >> o total neutrino energy 2.5 x 10^53 erg >> o total neutrino luminosity 10^55 erg/s >> o average neutrino temperature 4 MeV or 10^10 K >> o number of neutrinos produced 10^58 neutrinos >> >> o neutrino flux density at the earth 5 x 10^10 /cm^2 > > Which comes first, the neutrinos or the explosion? > Two stars collided for that one. You can clearly see the double ejecta. http://www.public.asu.edu/~rjansen/localgroup/SN1987A_Challis.jpg
From: BradGuth on 6 Nov 2009 20:33 On Nov 6, 1:24 pm, "Androcles" <Headmas...(a)Hogwarts.physics_p> wrote: > "Henry Wilson DSc ." <HW@..> wrote in messagenews:6609f5l470q2k3fhinr38fi87fau9ctmpn(a)4ax.com... > > > On Fri, 06 Nov 2009 18:26:30 GMT, Sam Wormley <sworml...(a)mchsi.com> wrote: > > >>Henry Wilson DSc wrote: > > >>> Wormey, what exactly causes a SN to explode? > > >> Contributors include shock wave bounce and a tremendous outpouring of > >> neutrinos. > > >> In the case of SN 1987A > >> o total anti-neutrino energy 3 x 10^52 erg > >> o total neutrino energy 2.5 x 10^53 erg > >> o total neutrino luminosity 10^55 erg/s > >> o average neutrino temperature 4 MeV or 10^10 K > >> o number of neutrinos produced 10^58 neutrinos > > >> o neutrino flux density at the earth 5 x 10^10 /cm^2 > > > Which comes first, the neutrinos or the explosion? > > Two stars collided for that one. You can clearly see the double > ejecta. > http://www.public.asu.edu/~rjansen/localgroup/SN1987A_Challis.jpg Nice one. How many light years diameter for each of those rings? ~ BG
From: Androcles on 7 Nov 2009 01:28 "Henry Wilson DSc ." <HW@..> wrote in message news:1r3af5d62khgap648f6n65es96tm8c4dei(a)4ax.com... > On Fri, 6 Nov 2009 21:24:53 -0000, "Androcles" > <Headmaster(a)Hogwarts.physics_p> > wrote: > >> >>"Henry Wilson DSc ." <HW@..> wrote in message >>news:6609f5l470q2k3fhinr38fi87fau9ctmpn(a)4ax.com... >>> On Fri, 06 Nov 2009 18:26:30 GMT, Sam Wormley <swormley1(a)mchsi.com> >>> wrote: >>> >>>>Henry Wilson DSc wrote: >>>> >>>>> >>>>> Wormey, what exactly causes a SN to explode? >>>> >>>> Contributors include shock wave bounce and a tremendous outpouring of >>>> neutrinos. >>>> >>>> In the case of SN 1987A >>>> o total anti-neutrino energy 3 x 10^52 erg >>>> o total neutrino energy 2.5 x 10^53 erg >>>> o total neutrino luminosity 10^55 erg/s >>>> o average neutrino temperature 4 MeV or 10^10 K >>>> o number of neutrinos produced 10^58 neutrinos >>>> >>>> o neutrino flux density at the earth 5 x 10^10 /cm^2 >>> >>> Which comes first, the neutrinos or the explosion? >>> >>Two stars collided for that one. You can clearly see the double >>ejecta. >> http://www.public.asu.edu/~rjansen/localgroup/SN1987A_Challis.jpg > > I wouldn't want to try to work it out. > We know that, D.umb Sc.umbag.
From: Nightcrawler on 7 Nov 2009 13:45
"Henry Wilson DSc." <HW@..> wrote in message news:5s3af5lt3o4126sp916860c9jdl49l07ga(a)4ax.com... > We know that, wormey...but the compression due to gravity ultimately causes > some kind of fusion... the principal energy source. Gravity alone can't cause > the bloody thing to blow up. Yes, just like a spark-plug, alone, does not make a piston move. |