Re: Supernova, Hypernova, Ultranova ?


Gautam Majumdar wrote:
What do we call the SN2006gy - an Ultranova ?

Since the link between long period GRB and supernova explosion was
established, as I understood it, big, massive stars undergo a hypernova
explosion and produce a black hole. I remember reading about a minimum
mass of something like 40 solar mass for hypernova explosion. Now it
appears that real, real, supermassive starts (lower mass limit ?) would go
beyond a hypernova explosion and won't have a black hole as a remnant.
What do we call such extreme events ? An Ultranova ?

Eta carniae won't kill us then with a burst of gamma-ray when it goes bang
in near (astronomically speaking) future :-).


--
gautam

My estimates of the source energy as eta Car. evolves after its next
and final eruption range from 10^44 Joules upwards.

What do you estimate the gamma-ray content to be, please? ed.

.

Relevant Pages

  • Re: Supernova, Hypernova, Ultranova ?
    ... Since the link between long period GRB and supernova explosion was ... mass of something like 40 solar mass for hypernova explosion. ... Eta carniae won't kill us then with a burst of gamma-ray when it goes bang ...
    (sci.astro)
  • Re: SR time dilation on remote objects ?
    ... >that the white dwarf implodes, ... it can no longer support it own mass and implodes. ... >> Thank you for using the correct term `implosion' even if you have the ... It is your choice to use the term explosion to ...
    (sci.astro)
  • Re: Where does all the firewood weight go?
    ... **The truth is the products of a combustion reaction (smoke particles, ... The energy released by the ... combustion reaction is indeed the conversion of some mass into energy ... the reactants before the explosion is given by the expression (binding ...
    (misc.rural)
  • Re: Center of Mass of the Universe?
    ... universe is "at every point" is based on the fact that we cannot from ... explosion which will indeed develop boundaries but which since then ... having a center of mass. ... of the bang. ...
    (sci.physics)
  • Re: explosives
    ... think of a square meter some distance away from the explosion. ... velocity v. now double the mass of the explosive. ... simply proportional to the amount of explosive present. ... detonation is simply determined by the speed of the detonation frong ...
    (sci.physics)