Eur. Phys. J. A (2004) 19: 197-201
https://doi.org/10.1140/epjad/s2004-03-033-9

Cold and hot nuclear matter

The Supernova–GRB connection

¹ 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

Received: 1 September 2003
Published online: 12 February 2004

Abstract

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.