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THE INCLINATION ANGLE AND EVOLUTION OF THE BRAKING INDEX OF PULSARS WITH PLASMA-FILLED MAGNETOSPHERE: APPLICATION TO THE HIGH BRAKING INDEX OF PSR J1640-4631

Eksi, K. Y.; Andac, I. C.; Cikintoglu, S.; Gugercinoglu, E.; Motlagh, A. Vahdat; Kiziltan, B.


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  "@id": 57187, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "name": "Eksi, K. Y."
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Fac Sci & Letters, Dept Engn Phys, TR-34469 Istanbul, Turkey", 
      "name": "Andac, I. C."
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Fac Sci & Letters, Dept Engn Phys, TR-34469 Istanbul, Turkey", 
      "name": "Cikintoglu, S."
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Univ, Dept Astron & Space Sci, Fac Sci, TR-34119 Istanbul, Turkey", 
      "name": "Gugercinoglu, E."
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Fac Sci & Letters, Dept Engn Phys, TR-34469 Istanbul, Turkey", 
      "name": "Motlagh, A. Vahdat"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA", 
      "name": "Kiziltan, B."
    }
  ], 
  "datePublished": "2016-01-01", 
  "description": "The recently discovered rotationally powered pulsar PSR J1640-4631 is the first to have a braking index measured, with high enough precision, that is greater than 3. An inclined magnetic rotator in vacuum or plasma would be subject not only to spin-down but also to an alignment torque. The vacuum model can address the braking index only for an almost orthogonal rotator, which is incompatible with the single-peaked pulse profile. The magnetic dipole model with the corotating plasma predicts braking indices between 3 and 3.25. We find that the braking index of 3.15 is consistent with two different inclination angles, 18 degrees.5 +/- 3 degrees and 56 degrees +/- 4 degrees. The smaller angle is preferred given that the pulse profile has a single peak and the radio output of the source is weak. We infer the change in the inclination angle to be at the rate -0 degrees.23 per century, three times smaller in absolute value than the rate recently observed for the Crab pulsar.", 
  "headline": "THE INCLINATION ANGLE AND EVOLUTION OF THE BRAKING INDEX OF PULSARS WITH PLASMA-FILLED MAGNETOSPHERE: APPLICATION TO THE HIGH BRAKING INDEX OF PSR J1640-4631", 
  "identifier": 57187, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "THE INCLINATION ANGLE AND EVOLUTION OF THE BRAKING INDEX OF PULSARS WITH PLASMA-FILLED MAGNETOSPHERE: APPLICATION TO THE HIGH BRAKING INDEX OF PSR J1640-4631", 
  "url": "https://aperta.ulakbim.gov.tr/record/57187"
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