# Observations of a Series of Six Recent Glitches in the Crab Pulsar

@article{Wong2000ObservationsOA,
title={Observations of a Series of Six Recent Glitches in the Crab Pulsar},
author={Tony Wong and Donald Charles Backer and Astronomy Dpt. UC - Berkeley and Jodrell Bank Observatory},
journal={arXiv: Astrophysics},
year={2000}
}
From 1995 to 1999, daily monitoring of the radio emission from the Crab pulsar at the Green Bank and Jodrell Bank observatories revealed a series of six sudden rotational spinups or glitches, doubling the number of glitches observed for this pulsar since 1969. With these observations, the range of time intervals between significant Crab glitches has widened considerably, indicating that the occurrence of Crab glitches may be more random than previously thought. The new glitch amplitudes… Expand
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#### References

SHOWING 1-10 OF 41 REFERENCES
The Vela glitch of Christmas 1988
• Physics
• Nature
• 1990
IN the past ten years, the Vela pulsar PSR 0833–45 has undergone several large, discontinuous changes—glitches—in its pulsation period. On 24 December 1988, we were making continuous radioExpand
Glitches in Southern Pulsars
Analysis of glitch parameters shows that most glitches have a fractional amplitude Delta nu(g)/nu of between 10(-8) and 10(-6), and there is no consistent relationship between glitch amplitude and the time since the previous glitch or the time to the following glitch, either for the ensemble or for individual pulsars. Expand
Spin-up and recovery in the 1989 glitch of the Crab pulsar
• Physics
• Nature
• 1992
THE rotation of the Crab pulsar, as measured by pulsed radio and optical emission, has been monitored almost continuously since its discovery in 1968. A steady decrease in the rotation rate has beenExpand
23 years of Crab pulsar rotational history
• Physics
• 1993
Between glitches, the rotational slowdown of the Crab pulsar is well described by a power law with braking index 2.51±0.01. Six glitches occurred during the period from 1969 to 1993; the largest, inExpand
Statistical studies of pulsar glitches
• Physics
• 2000
Shemar & Lyne have previously presented observations and an analysis of 32 glitches and their subsequent relaxations observed in a total of 15 pulsars. These data are brought together in this paperExpand
PSR1737–30 and period discontinuities in young pulsars
• Physics
• Nature
• 1990
THE rotation rate of pulsars decreases as kinetic energy is lost by the emission of electromagnetic radiation and particles. This gradual spin-down is sometimes interrupted, however, by abruptExpand
A Glitch in an Anomalous X-ray Pulsar
• Physics
• 2000
We report the detection of a sudden spin-up of the 11 s anomalous X-ray pulsar 1RXS J170849.0-400910 in regular timing observations made with the Rossi X-Ray Timing Explorer. The event, whichExpand
A Plasma Prism Model for an Anomalous Dispersion Event in the Crab Pulsar
• Physics
• 2000
In 1997 October, daily monitoring observations of the Crab pulsar at 327 MHz and 610 MHz with an 85 ft telescope in Green Bank, WV, showed a jump in the dispersion measure by 0.1 cm-3 pc. Pulses wereExpand
Timing of the Crab pulsar III. The slowing down and the nature of the random process
The Crab pulsar arrival times are analyzed. The data are found to be consistent with a smooth slowing down with a braking index of 2.515+-0.005. Superposed on the smooth slowdown is a random processExpand
JPL pulsar timing observations. V. Macro and microjumps in the Vela pulsar 0833-45
• Physics
• 1988
In this paper, 14.5 yr of JPL timing data are analyzed to study the spindown of the Vela pulsar. Discontinuities in the spin frequency and its derivatives have bimodal amplitude distributions.Expand