Supernovae

Details Supernovae Supernovae

2000-03-06

arxiv.org/abs/astro-ph/0003083v1

Astronomy and Astrophysics

Astrophysics

12 pages, 2 figures - Invited Lecture at the International Summer School "Experimental Physics of Gravitational Waves", Urbino

Scientific paper

The properties of supernovae (SNe) are reviewed. It is shown that the observed characteristics of the morphological classes of SNe (types Ia, Ib/c, II) can be explained in terms of two basic explosion mechanisms, i.e. core collapse of massive stars and thermonuclear explosion of low/moderate mass stars. The study of SNe can provide valuable insight in the late phases of the evolution of their progenitors and, therefore, can constrain the theory of stellar evolution quite tightly. Also, bright SNe of type Ia can be used to probe the Universe up to high redshifts, allowing us to measure cosmological constants and to gain valuable information on the formation and evolution of galaxies. The case of SN 1987A is discussed in some detail: it appears that in this event a number of predictions were astonishingly well verified but still many aspects were completely at variance with "common wisdom" expectations, indicating that the SN phenomenon is still not fully understood.

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