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DC Field | Value | Language |
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dc.contributor.author | Maan, Yogesh | - |
dc.contributor.author | Deshpande, A.A. | - |
dc.date.accessioned | 2008-06-10T11:23:08Z | - |
dc.date.available | 2008-06-10T11:23:08Z | - |
dc.date.issued | 2008 | - |
dc.identifier.citation | 40 years of pulsars - millisecond pulsars, magnetars and more. AIP conference proceedings Vol. 983. Eds. C G Bassa | en |
dc.identifier.issn | E-ISSN: 1551-7616 | - |
dc.identifier.issn | P-ISSN: 0094-243X | - |
dc.identifier.uri | http://hdl.handle.net/2289/3555 | - |
dc.description | Open Access. | en |
dc.description.abstract | “Sub-pulse drifting”, one of the rich phenomena exhibited by many pulsars, have been suggested ([8], Ruderman and Sutherland, hereafter RS) as representing a system of sparks circulating around the magnetic axis in the acceleration zone of the star. Although pulse `drift' sequences have been studied for a number of pulsars, only in a few cases (i.e, B0943+10 & B0834+06) have the underlying patterns been mapped so far, revealing a well organized system of emission sub-beams and providing a strong support to the R&S model of circulating sparks. The well-known bright pulsar B1237+25, with its multi-component profile resulting from a special viewing geometry combined with its rich variety in pulse-to-pulse fluctuations, represents a challenging case for exploring the underlying circulation pattern. We present preliminary results of our analysis on a number of pulse-sequences from this object, with a view to investigate the following:1. Are the sub-beam patterns in the two presumed conal rings correlated?2. If yes, are the corresponding sub-beam patterns in the two conal rings offset relative to each other in magnetic azimuth?3. Can the mode-changing phenomenon be understood as a result of some systematic feature in sub-beam patterns?4. Core component: Really a “core” or just another conal ring of suitably small radius? | en |
dc.format.extent | 472543 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | The American Institute of Physics | en |
dc.relation.uri | http://adsabs.harvard.edu/abs/2008AIPC..983..103M | en |
dc.relation.uri | http://dx.doi.org/10.1063/1.2900114 | en |
dc.rights | 2008 American Institute of physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. | en |
dc.subject | Pulsars | en |
dc.subject | Neutron stars | en |
dc.subject | Emission | en |
dc.subject | Ionospheric electromagnetic wave propagation | en |
dc.title | Revisiting the rich sub-pulse patterns of B1237+25: Preliminary results | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
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2008 AIP Proc. Vol.983 p103-105.pdf | Open Access | 461.47 kB | Adobe PDF | View/Open |
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