MARSHALL, F. E.; GUILLEMOT, Lucas; HARDING, A. K.; MARTIN, P.; SMITH, D. A.

doi:10.1088/2041-8205/807/2/L27

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MARSHALL, F. E.
GSFC Astrophysics Science Division

GUILLEMOT, Lucas
Unité Scientifique de la Station de Nançay [USN]
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace [LPC2E]

HARDING, A. K.
GSFC Astrophysics Science Division

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The Astrophysical journal letters. 2015, vol. 807, n° 2, p. L27

Bristol : IOP Publishing

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We report the discovery of a large, sudden, and persistent increase in the spin-down rate of B0540-69, a young pulsar in the Large Magellanic Cloud, using observations from the Swift and RXTE satellites. The relative increase in the spin-down rate $\dot{\nu }$ of 36% is unprecedented for B0540-69. No accompanying change in the spin rate is seen, and no change is seen in the pulsed X-ray emission from B0540-69 following the change in the spin-down rate. Such large relative changes in the spin-down rate are seen in the recently discovered class of "intermittent pulsars," and we compare the properties of B0540-69 to such pulsars. We consider possible changes in the magnetosphere of the pulsar that could cause such a large change in the spin-down rate.< Réduire

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Discovery of a Spin-down State Change in the LMC Pulsar B0540-69

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