Caballero I, Kraus U, Santangelo A, Sasaki M, Kretschmar P (2011)
Publication Status: Published
Publication Type: Journal article
Publication year: 2011
Publisher: EDP SCIENCES S A
Book Volume: 526
DOI: 10.1051/0004-6361/201014728
Aims. We applied a decomposition method to the energy dependent pulse profiles of the accreting binary pulsar A 0535+26, in order
to identify the contribution of the two magnetic poles of the neutron star and to obtain constraints on the geometry of the system and
on the beam pattern.
Methods. We analyzed pulse profiles obtained from RXTE observations in the X-ray regime. Basic assumptions of the method are
that the asymmetry observed in the pulse profiles is caused by non-antipodal magnetic poles and that the emission regions have ax-
isymmetric beam patterns.
Results. Constraints on the geometry of the pulsar and a possible solution of the beam pattern are given. We interpreted the recon- structed beam pattern in terms of a geometrical model of a hollow column plus a halo of scattered radiation on the neutron star surface, which includes relativistic light deflection.
APA:
Caballero, I., Kraus, U., Santangelo, A., Sasaki, M., & Kretschmar, P. (2011). Analyzing X-ray pulsar profiles: geometry and beam pattern of A0535+26. Astronomy & Astrophysics, 526. https://doi.org/10.1051/0004-6361/201014728
MLA:
Caballero, Isabel, et al. "Analyzing X-ray pulsar profiles: geometry and beam pattern of A0535+26." Astronomy & Astrophysics 526 (2011).
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