High-energy emission from isolated pulsars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Pulsars, X-Ray Sources, X-Ray Bursts, Magnetic And Electric Fields, Polarization Of Starlight

Scientific paper

Rotation-powered pulsars can produce observable high-energy emission by a number of mechanisms. Non-thermal X-rays and gamma-rays are produced by relativistic particles, accelerated in the pulsar magnetosphere at a still unknown location, via curvature, synchrotron and inverse Compton radiation. Thermal X-rays may be produced at the stellar surface by cooling of the neutron star or by a variety of possible heating mechanisms that include the bombardment of the surface by backflowing particles and internal friction. In pulsars with ultra-strong fields, known as magnetars, the magnetic field is the dominant energy source responsible for both the radiation and the spin-down behavior. I will review models for pulsar emission in light of recent X-ray data from ROSAT, ASCA and RXTE. .

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