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Constraints of the compactness of the isolated neutron stars via -ray phase-resolved spectroscopy

Constraints of the compactness of the isolated neutron stars via -ray phase-resolved spectroscopy. Valeri Hambaryan 1 , Valery Suleimanov 2 , Ralph Neuhäuser 1 & Klaus Werner 2. 1 Astrophysical Institut , University of Jena, Germany

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Constraints of the compactness of the isolated neutron stars via -ray phase-resolved spectroscopy

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  1. Constraints of the compactness of the isolated neutron stars via -ray phase-resolved spectroscopy Valeri Hambaryan1, Valery Suleimanov 2, Ralph Neuhäuser 1 & Klaus Werner 2 1Astrophysical Institut , University of Jena, Germany 2Institut for Astronomy & Astrophyscs , University of Tuebingen, Germany 1Astrophysical Institut , University of Jena, Germany Thermallyemittingisolatedneutronstars P-P_dotdiagram Distribution in Galaxy • RBS 1223=1RXS J130848.6+212708 • High galactic latitude: l=338.7457 b=+83.0813 • Highest pulsed fraction among M7: • Double humped light curveStrongest broad absorption feature EW = 150 eV E line = 300 eV

  2. Model: Observationaldata: Spectrumvs LC Fecyclotron energy EC CondensedFesurface spectraapproximations PartiallyionizedH atmospheresabove condencedFesurfaces

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