Cold and hot nuclear matter
The Supernova–GRB connection
Dipartimento di Fisica, Università di Ferrara and INFN, Sezione di Ferrara, 44100 Ferrara, Italy
2 Dipartimento di Fisica, Politecnico di Torino and INFN, Sezione di Torino, 10129 Torino, Italy
Published online: 12 February 2004
We study the effects of color superconductivity on the structure and formation of compact stars. We show that it is possible to satisfy most of recent observational boundaries on masses and radii if a diquark condensate forms in a hybrid or a quark star. Moreover, we find that a huge amount of energy, of the order of 1053 erg, can be released in the conversion from a (metastable) hadronic star into a (stable) hybrid or quark star, if the presence of a color superconducting phase is taken into account. Accordingly to the scenario proposed in Astrophys.J.586(2003)1250, the energy released in this conversion can power a Gamma Ray Burst. Possible experimental evidences, indicating a range of time delay between a Supernova explosion and a subsequent Gamma Ray Burst, are here discussed and interpreted.
PACS: codes. – 26.60.+c - / codes. – 26.50.+x - / codes. – 12.38.Mh - / codes. – 97.60.Jd -
© Società Italiana di Fisica, Springer-Verlag, 2004