What if pulsars are born as strange stars?

Citation
Rx. Xu et al., What if pulsars are born as strange stars?, ASTROPART P, 15(1), 2001, pp. 101-120
Citations number
126
Language
INGLESE
art.tipo
Review
Categorie Soggetti
Space Sciences
Journal title
ASTROPARTICLE PHYSICS
ISSN journal
0927-6505 → ACNP
Volume
15
Issue
1
Year of publication
2001
Pages
101 - 120
Database
ISI
SICI code
0927-6505(200103)15:1<101:WIPABA>2.0.ZU;2-2
Abstract
The possibility and the implications of the idea, that pulsars are born as strange stars, are explored. Strange stars are very likely to have atmosphe res with typical mass of similar to5 x 10(-15)M. but bare polar caps almost throughout their lifetimes, if they are produced during supernova explosio ns. A direct consequence of the bare polar cap is that the binding energies of both positively and negatively charged particles at the bare quark surf ace are nearly infinity, so that the vacuum polar gap sparking scenario as proposed by Ruderman and Sutherland should operate above the cap, regardles s of the sense of the magnetic pole with respect to the rotational pole. He at cannot accumulate on the polar cap region due to the large thermal condu ctivity on the bare quark surface. We test this "bare polar cap strange sta r" (BPCSS) idea with the present broad band emission data of pulsars, and p ropose several possible criteria to distinguish BPCSSs from neutron stars. (C) 2001 Elsevier Science B.V. All rights reserved.