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The continued spectral evolution of the neutron star RX J0720.4-3125

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 نشر من قبل Jacco Vink
 تاريخ النشر 2004
  مجال البحث فيزياء
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 تأليف Jacco Vink




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We observed the isolated neutron star RX J720.4-3125 with Chandras Low Energy Transmission Grating Spectrometer, following the XMM-Newton discovery of long term spectral evolution of this source. The new observation shows that the spectrum of RX J720.4-3125 has continued to change in the course of 5 months. It has remained hard, similar to the last XMM-Newton observation, but the strong depression observed with XMM-Newton at long wavelengths has disappeared. Contrary to the XMM-Newton observations, the new Chandra observation shows that the flux increase at short wavelengths and the decrease at long wavelengths do not necessarily occur simultaneously.



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