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19 April 2024 |
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A Search for Pulsars in Quiescent Soft X-Ray Transients. I | | M. Burgay
; L. Burderi
; A. Possenti
; N. D’Amico
; R. N. Manchester
; A. G. Lyne
; F. Camilo
; | | Date: |
6 Feb 2003 | | Journal: | Astrophys.J. 589 (2003) 902-910 | | Subject: | astro-ph | | Affiliation: | 3,4), N. D’Amico (4,5), R. N. Manchester , A. G. Lyne , F. Camilo ( Universita’ di Bologna, Osservatorio Astronomico di Roma-Monteporzio, Osservatorio Astronomico di Bologna, Osservatorio Astronomico di Cagliari, Universita’ di | | Abstract: | We have carried out a deep search at 1.4 GHz for radio pulsed emission from six soft X-ray transient sources observed during their X-ray quiescent phase. The commonly accepted model for the formation of the millisecond radio pulsars predicts the presence of a rapidly rotating, weakly magnetized neutron star in the core of these systems. The sudden drop in accretion rate associated with the end of an X-ray outburst causes the Alfvèn surface to move outside the light cylinder, allowing the pulsar emission process to operate. No pulsed signal was detected from the sources in our sample. We discuss several mechanisms that could hamper the detection and suggest that free-free absorption from material ejected from the system by the pulsar radiation pressure could explain our null result. | | Source: | arXiv, astro-ph/0302128 | | Services: | Forum | Review | PDF | Favorites | |
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