Thermal X-ray emission from isolated older pulsars - A new heating mechanism

Astronomy and Astrophysics – Astronomy

Scientific paper

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Pulsars, Stellar Temperature, Thermal Emission, X Ray Astronomy, Magnetic Dipoles, Magnetic Flux, Radiant Heating, Spin Reduction, Stellar Evolution, Stellar Magnetic Fields, Stellar Models, Superfluidity, Surface Temperature

Scientific paper

A new pulsar heating mechanism, magnetic dipole radiation of superfluid neutrons, is proposed. It is also a new mechanism for pulsar spindown, the average value of the spindown rate is proportional to the square of the pulsar period. The expected surface temperatures are calculated for isolated, older pulsars for different models. These temperatures are compared with measurements from the Einstein Observatory (HEAO2). According to this mechanism, the internal magnetic field strengths are estimated for older pulsars.

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