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http://hdl.handle.net/2289/5959Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Beri, Aru | - |
| dc.contributor.author | Jain, Chetana | - |
| dc.contributor.author | Paul, Biswajit | - |
| dc.contributor.author | Raichur, Harsha | - |
| dc.date.accessioned | 2014-09-03T07:13:38Z | - |
| dc.date.available | 2014-09-03T07:13:38Z | - |
| dc.date.issued | 2014-04-01 | - |
| dc.identifier.citation | Monthly Notices of the Royal Astronomical Society, 2014, Vol. 439, p1940-1947 | en |
| dc.identifier.issn | 0035-8711 | - |
| dc.identifier.issn | 1365-2966 - (online) | - |
| dc.identifier.uri | http://hdl.handle.net/2289/5959 | - |
| dc.description | Open Access | en |
| dc.description.abstract | We review the pulse profile evolution of the unique accretion powered X-ray pulsar 4U 1626−67 over the last 40 yr since its discovery. This pulsar showed two distinct eras of steady spin-up separated by a steady spin-down episode for about 18 yr. In this work, using data from different observatories active during each phase of spin-up and spin-down, we establish a clear correlation between the accretion torque acting on this pulsar and its pulse profile. The energy-resolved pulse profiles are identical in both the spin-up eras and quite different in the spin-down era, especially in the low-energy band. This correlation, along with the already known feature of strong quasi-periodic oscillations (QPO) that was present only in the spin-down era, clearly establishes two different accretion modes on to the neutron star which produce different pulse profiles and only one of which produces the QPOs. | en |
| dc.language.iso | en | en |
| dc.publisher | Oxford University Press | en |
| dc.relation.uri | http://adsabs.harvard.edu/abs/2014MNRAS.439.1940B | en |
| dc.relation.uri | http://arxiv.org/abs/1401.2936 | en |
| dc.relation.uri | http://dx.doi.org/10.1093/mnras/stu087 | en |
| dc.rights | 2014 The authors & the Royal Astronomical Society. | en |
| dc.subject | accretion discs | en |
| dc.title | Torque reversals and pulse profile of the pulsar 4U 1626-67 | en |
| dc.type | Article | en |
| Appears in Collections: | Research Papers (A&A) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2014_MNRAS_439_1940.pdf | Open Access | 923.08 kB | Adobe PDF | View/Open |
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