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Title: Conversion of a neutron star to a strange star: A two-step process

Abstract

The conversion of a neutron star to a strange star is studied. Such a transition may be viewed as a two-step process in which the hadronic matter first gets converted to two-flavor quark matter, which, in turn, converts to strange quark matter in the second step of the process. Relativistic hydrodynamical equations are employed to obtain the velocity of propagation of the first conversion front. The second transition front, arising from the conversion of two-flavor to three-flavor quark matter, is studied by using an appropriate weak interaction rate. The propagation velocity of the first conversion front initially shoots up near the core of the star to eventually saturate to some ultrarelativistic value. The first conversion takes about a millisecond, during which the second conversion front is likely to be generated. The second process takes about a hundred seconds to convert the whole quark star into a strange star.

Authors:
 [1]; ;  [2];  [3];  [2];  [4]
  1. Department of Physics, University of Calcutta, 92, A. P. C Road, Kolkata 700009 (India)
  2. Centre for Astroparticle Physics and Space Science, Bose Institute, 93/1, A. P. C Road, Kolkata 700009 (India)
  3. (India)
  4. Department of Physics, Bose Institute, 93/1, A. P. C. Road, Kolkata 700009 (India)
Publication Date:
OSTI Identifier:
20864246
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 74; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.74.065804; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CONVERSION; FLAVOR MODEL; HADRONS; NEUTRON STARS; QUARK MATTER; RELATIVISTIC RANGE; S QUARKS; WEAK INTERACTIONS

Citation Formats

Bhattacharyya, Abhijit, Ghosh, Sanjay K., Raha, Sibaji, Department of Physics, Bose Institute, 93/1, A. P. C. Road, Kolkata 700009, Joarder, Partha S., and Mallick, Ritam. Conversion of a neutron star to a strange star: A two-step process. United States: N. p., 2006. Web. doi:10.1103/PHYSREVC.74.065804.
Bhattacharyya, Abhijit, Ghosh, Sanjay K., Raha, Sibaji, Department of Physics, Bose Institute, 93/1, A. P. C. Road, Kolkata 700009, Joarder, Partha S., & Mallick, Ritam. Conversion of a neutron star to a strange star: A two-step process. United States. doi:10.1103/PHYSREVC.74.065804.
Bhattacharyya, Abhijit, Ghosh, Sanjay K., Raha, Sibaji, Department of Physics, Bose Institute, 93/1, A. P. C. Road, Kolkata 700009, Joarder, Partha S., and Mallick, Ritam. Fri . "Conversion of a neutron star to a strange star: A two-step process". United States. doi:10.1103/PHYSREVC.74.065804.
@article{osti_20864246,
title = {Conversion of a neutron star to a strange star: A two-step process},
author = {Bhattacharyya, Abhijit and Ghosh, Sanjay K. and Raha, Sibaji and Department of Physics, Bose Institute, 93/1, A. P. C. Road, Kolkata 700009 and Joarder, Partha S. and Mallick, Ritam},
abstractNote = {The conversion of a neutron star to a strange star is studied. Such a transition may be viewed as a two-step process in which the hadronic matter first gets converted to two-flavor quark matter, which, in turn, converts to strange quark matter in the second step of the process. Relativistic hydrodynamical equations are employed to obtain the velocity of propagation of the first conversion front. The second transition front, arising from the conversion of two-flavor to three-flavor quark matter, is studied by using an appropriate weak interaction rate. The propagation velocity of the first conversion front initially shoots up near the core of the star to eventually saturate to some ultrarelativistic value. The first conversion takes about a millisecond, during which the second conversion front is likely to be generated. The second process takes about a hundred seconds to convert the whole quark star into a strange star.},
doi = {10.1103/PHYSREVC.74.065804},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 74,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2006},
month = {Fri Dec 15 00:00:00 EST 2006}
}