Vacuum gaps in pulsars and PSR J2144-3933

Gil, Janusz; Mitra, D.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1451

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DC Field	Value	Language
dc.contributor.author	Gil, Janusz	-
dc.contributor.author	Mitra, D.	-
dc.date.accessioned	2006-08-30T06:34:40Z	-
dc.date.available	2006-08-30T06:34:40Z	-
dc.date.issued	2001-03-20	-
dc.identifier.citation	Astrophysical Journal, 2001, Vol.550, p383-391	en
dc.identifier.issn	0004-637X	-
dc.identifier.issn	1538-4357(Online)	-
dc.identifier.uri	http://hdl.handle.net/2289/1451	-
dc.description.abstract	In this paper we revisit the radio pulsar death line problem within the framework of curvature radiation and/or the inverse Compton scattering-induced vacuum gap model above neutron star polar caps. Our special interest is in the recently detected pulsar PSR J2144-3933 with extremal period 8.5 s, which lies far beyond conventional death lines. We argue that the formation of vacuum gaps requires a complicated multipolar surface magnetic field, with a strength Bs typically much higher than the surface dipolar component Bd and a radii of curvature R much smaller than the neutron star radius R=106 cm. Such a multipolar surface field is also consistent with death lines including the extremal pulsar PSR J2144-3933. Since vacuum gap models produce sparks, our paper naturally supports the spark related models of subpulse drift phenomenon as well as the spark-associated models of coherent pulsar radio emission.	en
dc.format.extent	191900 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	The University of Chicago Press for the American Astronomical Society	en
dc.relation.uri	http://dx.doi.org/10.1086/319714	en
dc.rights	(2001) by the American Astronomical Society.	en
dc.subject	Magnetic Fields,	en
dc.subject	Stars: Pulsars: General,	en
dc.subject	Radiation Mechanisms: Nonthermal	en
dc.title	Vacuum gaps in pulsars and PSR J2144-3933	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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