A nova outburst scenario for GX 1+4 spin-down episode |
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| Authors: | R. K. Manchanda |
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| Affiliation: | (1) University College, ADFA, Univ. of NSW, Canberra, Australia;(2) Tata Institute of Fundamental Research, Colaba, Bombay, India |
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| Abstract: | X-ray spectral data of the source during 1982–1987 suggest that the observed low state of the source intensity could have arisen due to additional absorption of the X-ray flux by material surrounding the X-ray source, which could have come from the companion star during a nova outburst. The accretion models can not explain the rapid spin-down of the pulsar. If the spin-down is caused by the nova outburst, it is suggested that period slow down can occur due to mechanical braking of the pulsar generated by the increased moment of inertia. |
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