Results 131 to 140 of about 2,165 (169)
A binary merger product as the direct progenitor of a Type II-P supernova
Niu* Z +17 more
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Type II supernovae from prompt explosions
Physical Review Letters, 1987Evidence is cited that supernova 1987A involved a large explosion energy, of about (2-3) x 10 to the 51st ergs. Such large explosion energy has not come from delayed shocks to date, nor is it likely to. Improved physics in the presupernova evolution, especially the inclusion of Coulomb interactions, has brought the iron-core mass down by less than ...
, Baron +4 more
openaire +2 more sources
1984
Evidence is briefly reviewed for believing that the core bounce mechanism actually gives rise to Type II supernovae in massive stars. Strongest evidence comes from the historical observation of the Crab Nebula light curve, the existence of pulsars, and from the nucleosynthesis of a few very neutron-rich isotopes such as 48Ca.
S. E. Woosley, Thomas A. Weaver
openaire +1 more source
Evidence is briefly reviewed for believing that the core bounce mechanism actually gives rise to Type II supernovae in massive stars. Strongest evidence comes from the historical observation of the Crab Nebula light curve, the existence of pulsars, and from the nucleosynthesis of a few very neutron-rich isotopes such as 48Ca.
S. E. Woosley, Thomas A. Weaver
openaire +1 more source
Underluminous type II-P supernovae
AIP Conference Proceedings, 2009We present photometric and spectroscopic data for the largest sample of underluminous type IIP supernovae ever studied. We compare their light curves and spectra with those of normal SNe IIP in order to delineate the characteristics of this family of core‐collapse events.
S. Spiro +8 more
openaire +1 more source
Models of Type II Supernovae and Supernova 1987A
1989Implications from the observations of SN 1987A for the standard model of type II supernova explosions are discussed. In particular, we find evidence for strong mixing prior to the explosion of SN 1987A, which was not expected from simple spherically symmetric models.
Wolfgang Hillebrandt +3 more
openaire +1 more source
Strmömgren zones of type II supernovae
Astronomy Reports, 2003The emission measures EM in the directions of supernova remnants and pulsars are considered as functions of their ages t. The resulting plot has a well-defined lower boundary, which can be approximated by the expression EMmin∝1/t. The quantity EMmin increases with decreasing age t and does not level off or reach a maximum until t≅500 yr.
A. V. Pynzar’, V. I. Shishov
openaire +1 more source
1974
The supernova of 1923 in M83 has only a partial, but continuous light curve (Figure 1) based entirely on Lampland’s assiduous observations at Lowell Observatory from May 5 to July 1, 1923 (Lampland, 1936). There are only three other published observations from Harvard; the SN was invisible on patrol camera plates (m> 14.0 and m> 13.5) on April 6 and 23
openaire +1 more source
The supernova of 1923 in M83 has only a partial, but continuous light curve (Figure 1) based entirely on Lampland’s assiduous observations at Lowell Observatory from May 5 to July 1, 1923 (Lampland, 1936). There are only three other published observations from Harvard; the SN was invisible on patrol camera plates (m> 14.0 and m> 13.5) on April 6 and 23
openaire +1 more source
Hydrodynamical models of type II supernovae
Astrophysics and Space Science, 1983A series of hydrodynamical models of type-II supernova outbursts (SNII) has been calculated. Approximate relations connecting the total outburst energy e, the mass of envelope ejectedM, the presupernova radiusR, and the amount of ionizing quanta radiated by the supernovaeN H with such values as the duration of the light curve plateau Δt, and absolute ...
I. Yu. Litvinova, D. K. Nadyozhin
openaire +1 more source
Physics of Type II Supernova Explosions
1989Supernova explosions are so energetic that one of the following two basic mechanisms must be responsible for each such event: Either a star-size fusion bomb explodes more or less as a whole, or the central core of a massive star in an advanced evolutionary phase becomes unstable and collapses to nuclear densities, thereby releasing an enormous ...
openaire +1 more source