http://arxiv.org/abs/2211.07485
The analysis of the central compact object within the supernova (SN) remnant HESS J1731-347 suggests that it has a small radius and, even more interestingly, a mass of the order or smaller than one solar mass (Doroshenko et al. 2022, Nature Astronomy). This raises the question of which astrophysical process could lead to such a small mass, since the analysis of various types of SN explosions indicate that is it not possible to produce a neutron star (NS) with a mass smaller than about $1.17 M_\odot$. Here we show that masses of the order or smaller than one solar mass can be obtained in the case of strange quark stars (QSs) and that it is possible to build a coherent astrophysical scenario explaining not only the mass and the radius of that object, but also its slow cooling suggested in various analyses. Moreover, we will show that QSs can fulfill all the limits on masses and radii of the other astrophysical objects discussed in Doroshenko et al. 2022 and can also explain the possible existence of objects having a mass of the order or larger than $2.5 M_\odot$, as suggested by the analysis of GW190814.
F. Clemente, A. Drago and G. Pagliara
Tue, 15 Nov 22
72/103
Comments: 6 pages, 1 Figure, 1 Table