Results 31 to 40 of about 427 (123)
X-Ray Observation of the 2017 November Glitch in the Crab Pulsar
The Astrophysical Journal, 2018 Abstract We have observed a glitch in the Crab pulsar (PSR B0531+21) in the 0.5–10 keV X-ray band with the X-Ray Pulsar Navigation-I (XPNAV-1) satellite. This glitch occurred around 2017 November 8. Observations at radio frequency by the Jodrell Bank observatory and the Lovell telescope have confirmed it to be the largest ever observed ...
Xinyuan Zhang +4 more
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The Astrophysical JournalIt was previously believed that the long-term persistent increase in the spin-down rate of the Crab pulsar following a glitch is direct evidence of a starquake-induced glitch or at least related to a starquake.
Xiao-Ping Zheng +4 more
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Braking index of the frequently glitching PSR J0537−6910★
Astronomy & AstrophysicsContext. The pulsar J0537−6910 undergoes spin-up glitches more frequently than any other known pulsar, at a rate of roughly thrice per year. Its glitches are typically large and accompanied by abrupt changes in the spin-down rate ( ν˙ ν ˙ $ \dot{\nu}
Gügercinoğlu Erbil +4 more
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Are Fast Radio Bursts Produced By Large Glitches Of Anomalous X-ray Pulsars?
, 2020 Star quakes and internal phase transitions within anomalous x-ray pulsars (AXPs) and soft $ $-ray repeaters (SGRs) can produce mini contractions and pulsar glitches. Shocks break out from their surface following such contractions produce thermal x/$ $-ray bursts.
Dado, Shlomo, Dar, Arnon
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Radio Pulsars as Progenitors of Anomalous X-Ray Pulsars and Soft Gamma-Ray Repeaters: Magnetic Field Evolution through Pulsar Glitches [PDF]
The Astrophysical Journal, 2004 Glitches are common phenomena in pulsars. After each glitch, there is often a permanent increase in the pulsar's spin-down rate. Therefore, a pulsar's present spin-down rate may be much higher than its initial value and the characteristic age of a pulsar based on its present spin-down rate and period may be shorter than its true age.
J. R. Lin, S. N. Zhang
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Long-term Timing Evolution of Four Anomalous X-Ray Pulsars
The Astrophysical JournalAnomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are believed to be manifestations of magnetars. Typically, AXPs exhibit higher X-ray luminosities, whereas SGRs are generally fainter and display significantly high signal-to-noise ratios
Han-Long Peng +11 more
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Discovery of Evolution of the Temporal Features of X-Ray Bursts from SGR J1935+2154
The Astrophysical JournalSGR J1935+2154 has undergone eight active episodes since its discovery in 2014. In this study, our focus is on the evolution of the temporal characteristics including burst duration, minimum variation timescale (MVT), and waiting time across these active
Shuo Xiao +9 more
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Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT A short X-ray burst was observed from the radio-loud magnetar 1E 1547.0–5408 in 2022 April. Unusually however, the source stopped showing radio pulsations $\gtrsim 3\,$ weeks prior to the burst. After recovery, radio timing revealed that the object had also undergone a modest glitch.
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Probing Neutron Star Interiors and the Properties of Cold Ultra-dense Matter with the SKA
The Open Journal of AstrophysicsMatter inside neutron stars is compressed to densities several times greater than nuclear saturation density, while maintaining low temperatures and large asymmetries between neutrons and protons. Neutron stars, therefore, provide a unique laboratory for
Avishek Basu +21 more
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A Major SGR-like Outburst and Rotation Glitch in the No-Longer-So-Anomalous X-ray Pulsar 1E 2259+586
The Astrophysical Journal, 2003 Accepted for publication in ApJ Letters. 12 pages, 2 figures. Corrected peak burst flux values.
Kaspi, V. M. +5 more
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