Volume 384, Number 3, March IV 2002
|Page(s)||899 - 907|
|Section||Interstellar and circumstellar matter|
|Published online||15 March 2002|
Electromagnetic pulse from final gravitational stellar collapse
Development Systems Group B301, Veridian Systems Division, 14700 Lee Road, Chantilly, VA 20151, USA e-mail: Peter.Morley@Veridian.com
2 Departamento de Física, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso, Chile e-mail: email@example.com
Corresponding author: P. D. Morley, firstname.lastname@example.org
Accepted: 16 November 2001
We employ an effective gravitational stellar final collapse model which contains the relevant physics involved in this complex phenomena: spherical radical infall in the Schwarzschild metric of the homogeneous core of an advanced star, giant magnetic dipole moment, magnetohydrodynamic material response and realistic equations of state (EOS). The electromagnetic pulse is computed both for medium size cores undergoing hydrodynamic bounce and large size cores undergoing black hole formation. We clearly show that there must exist two classes of neutron stars, separated by maximum allowable masses: those that collapsed as solitary stars (dynamical mass limit) and those that collapsed in binary systems allowing mass accretion (static neutron star mass). Our results show that the electromagnetic pulse spectrum associated with black hole formation is a universal signature, independent of the nuclear EOS. Our results also predict that there must exist black holes whose masses are less than the static neutron star stability limit.
Key words: pulsars: general / radiation mechanisms: general
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.