Exploring the formation of 'Black Widows'

Black Widows (BWs) are a class of binary millisecond pulsars orbiting together with very low mass donor stars (≲ 10<sup>-2</sup>M<sub>⊙</sub>). After the discovery of eclipses in the first known BW, PSR 1957+20, they are considered as close binary systems (CBSs) in which the...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Benvenuto, Omar Gustavo, De Vito, María Alejandra, Horvath, J. E.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2015
Materias:	Ciencias Astronómicas Binaries: close Pulsars: general Pulsars: individual: PSR 1957+20 Pulsars: individual: PSR J1311-3430 Pulsars: individual: PSR J1719-1438 Stars: evolution
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/85890
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-85890
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Astronómicas Binaries: close Pulsars: general Pulsars: individual: PSR 1957+20 Pulsars: individual: PSR J1311-3430 Pulsars: individual: PSR J1719-1438 Stars: evolution
spellingShingle	Ciencias Astronómicas Binaries: close Pulsars: general Pulsars: individual: PSR 1957+20 Pulsars: individual: PSR J1311-3430 Pulsars: individual: PSR J1719-1438 Stars: evolution Benvenuto, Omar Gustavo De Vito, María Alejandra Horvath, J. E. Exploring the formation of 'Black Widows'
topic_facet	Ciencias Astronómicas Binaries: close Pulsars: general Pulsars: individual: PSR 1957+20 Pulsars: individual: PSR J1311-3430 Pulsars: individual: PSR J1719-1438 Stars: evolution
description	Black Widows (BWs) are a class of binary millisecond pulsars orbiting together with very low mass donor stars (≲ 10<sup>-2</sup>M<sub>⊙</sub>). After the discovery of eclipses in the first known BW, PSR 1957+20, they are considered as close binary systems (CBSs) in which the donor star is being evaporated by the radiation emitted by the pulsar. Standard CBS evolution calculations (i.e. without evaporation) have faced serious difficulties when trying to find ways to form BWs. When the donor star is in Roche Lobe Overflow conditions after becoming semi-degenerate, it will evolve to longer orbital periods as a consequence of its swelling reaction to mass loss. In order to reach orbital periods in the range observed for several BWs, it would need to spend times far in excess of the age of the Universe. Here we extend the calculations presented in our previous papers on the topic, including evaporation, showing that the evolution of CBSs with a neutron star component together with an intermediate-mass, normal star provides a successful and natural scenario to account for the existence and properties of BWs.
format	Articulo Articulo
author	Benvenuto, Omar Gustavo De Vito, María Alejandra Horvath, J. E.
author_facet	Benvenuto, Omar Gustavo De Vito, María Alejandra Horvath, J. E.
author_sort	Benvenuto, Omar Gustavo
title	Exploring the formation of 'Black Widows'
title_short	Exploring the formation of 'Black Widows'
title_full	Exploring the formation of 'Black Widows'
title_fullStr	Exploring the formation of 'Black Widows'
title_full_unstemmed	Exploring the formation of 'Black Widows'
title_sort	exploring the formation of 'black widows'
publishDate	2015
url	http://sedici.unlp.edu.ar/handle/10915/85890
work_keys_str_mv	AT benvenutoomargustavo exploringtheformationofblackwidows AT devitomariaalejandra exploringtheformationofblackwidows AT horvathje exploringtheformationofblackwidows
bdutipo_str	Repositorios
_version_	1764820489079881728

Exploring the formation of 'Black Widows'

Ejemplares similares