2011A&A...526A.131C


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.11CET09:09:25

2011A&A...526A.131C - Astronomy and Astrophysics, volume 526A, 131-131 (2011/2-1)

Analyzing X-ray pulsar profiles: geometry and beam pattern of A 0535+26.

CABALLERO I., KRAUS U., SANTANGELO A., SASAKI M. and KRETSCHMAR P.

Abstract (from CDS):

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. We analyzed pulse profiles obtained from iRXTE 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 axisymmetric beam patterns. Constraints on the geometry of the pulsar and a possible solution of the beam pattern are given. We interpreted the reconstructed 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.

Abstract Copyright:

Journal keyword(s): X-rays: binaries - pulsars: individual: A 0535+26

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 245770 HXB 05 38 54.5749436467 +26 18 56.839215267 9.30 9.84 9.39 8.77 8.30 O9/B0III/Ve 861 0
2 V* V779 Cen HXB 11 21 15.0920367078 -60 37 25.627505233   14.4       O9III/Veq 987 0
3 V* HZ Her LXB 16 57 49.8110797681 +35 20 32.487435684 11.90 14.89 13.63 13.88   B3/6ep 1902 0
4 V* V2246 Cyg HXB 20 32 15.2744631713 +37 38 14.839930326   22.16 19.41 17.32 15.18 B0Ve 372 0

    Equat.    Gal    SGal    Ecl

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2019.12.11-09:09:25

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