On the spin-up of neutron stars to millisecond pulsars in long-period binaries
We study the accretion efficiency of neutron stars in long-period binaries (P greater than or similar to 20(d)) which accrete from a giant companion. Using a-disc models and taking into account the effect of irradiation of the accretion disc by the central accretion light source we derive explicit e...
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| Format: | Conference item |
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2001
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| _version_ | 1797098014637031424 |
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| author | Ritter, H King, A |
| author_facet | Ritter, H King, A |
| author_sort | Ritter, H |
| collection | OXFORD |
| description | We study the accretion efficiency of neutron stars in long-period binaries (P greater than or similar to 20(d)) which accrete from a giant companion. Using a-disc models and taking into account the effect of irradiation of the accretion disc by the central accretion light source we derive explicit expressions for the duty cycle d and the accretion efficiency 77 in terms of the parameters of the binary system and the disc instability limit cycle. We show that the absence of millisecond pulsars in wide binaries with circular orbits and periods P greater than or similar to 200(d) can be understood as a consequence of the disc instability if the duration of the quiescent phase between two subsequent outbursts is at least a few decades. |
| first_indexed | 2024-03-07T05:03:35Z |
| format | Conference item |
| id | oxford-uuid:d9278bef-2020-4ed2-b615-0b045c03d654 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:03:35Z |
| publishDate | 2001 |
| record_format | dspace |
| spelling | oxford-uuid:d9278bef-2020-4ed2-b615-0b045c03d6542022-03-27T08:53:50ZOn the spin-up of neutron stars to millisecond pulsars in long-period binariesConference itemhttp://purl.org/coar/resource_type/c_5794uuid:d9278bef-2020-4ed2-b615-0b045c03d654Symplectic Elements at Oxford2001Ritter, HKing, AWe study the accretion efficiency of neutron stars in long-period binaries (P greater than or similar to 20(d)) which accrete from a giant companion. Using a-disc models and taking into account the effect of irradiation of the accretion disc by the central accretion light source we derive explicit expressions for the duty cycle d and the accretion efficiency 77 in terms of the parameters of the binary system and the disc instability limit cycle. We show that the absence of millisecond pulsars in wide binaries with circular orbits and periods P greater than or similar to 200(d) can be understood as a consequence of the disc instability if the duration of the quiescent phase between two subsequent outbursts is at least a few decades. |
| spellingShingle | Ritter, H King, A On the spin-up of neutron stars to millisecond pulsars in long-period binaries |
| title | On the spin-up of neutron stars to millisecond pulsars in long-period binaries |
| title_full | On the spin-up of neutron stars to millisecond pulsars in long-period binaries |
| title_fullStr | On the spin-up of neutron stars to millisecond pulsars in long-period binaries |
| title_full_unstemmed | On the spin-up of neutron stars to millisecond pulsars in long-period binaries |
| title_short | On the spin-up of neutron stars to millisecond pulsars in long-period binaries |
| title_sort | on the spin up of neutron stars to millisecond pulsars in long period binaries |
| work_keys_str_mv | AT ritterh onthespinupofneutronstarstomillisecondpulsarsinlongperiodbinaries AT kinga onthespinupofneutronstarstomillisecondpulsarsinlongperiodbinaries |