论文标题
大故障的返回：PSR J0537-6910的更好的时机和故障
Return of the Big Glitcher: NICER timing and glitches of PSR J0537-6910
论文作者
论文摘要
PSR J0537-6910，也称为大故障者，是最多产的小故障脉冲星，其自旋诱导的脉动仅在X射线中可检测到。我们从2017年8月至2020年4月分析了2。7年来分析2。7年的时间。我们获得了整个时间板的旋转相连接的时序模型，该模型与Ligo/pirgo的第三次观察到的运行重叠，从而实现了最敏感的引力波搜索这种潜在强烈的引力发射脉冲星。我们发现，自上述故障以来，小故障之间的短期制动指数在更长的时间内降低了7或更低的值。通过组合更好和RXTE数据，我们测量了长期制动指数n = -1.25 +/- 0.01。我们的分析揭示了8个新的故障，这是自2011年以来第一次检测到的RXTE末端，总和RXTE的毛刺活动为8.88x10^-7 yr^-1。新的故障遵循看似独特的时间到接头glitch的---先前使用RXTE数据建立的故障大小相关性，坡度为5 d microhz^-1。对于一个杂乱无章的小故障，在两边都可以观察到两天的时间，我们搜索但看不到可能与小故障相关的光谱变化的明确证据。
PSR J0537-6910, also known as the Big Glitcher, is the most prolific glitching pulsar known, and its spin-induced pulsations are only detectable in X-ray. We present results from analysis of 2.7 years of NICER timing observations, from 2017 August to 2020 April. We obtain a rotation phase-connected timing model for the entire timespan, which overlaps with the third observing run of LIGO/Virgo, thus enabling the most sensitive gravitational wave searches of this potentially strong gravitational wave-emitting pulsar. We find that the short-term braking index between glitches decreases towards a value of 7 or lower at longer times since the preceding glitch. By combining NICER and RXTE data, we measure a long-term braking index n=-1.25+/-0.01. Our analysis reveals 8 new glitches, the first detected since 2011, near the end of RXTE, with a total NICER and RXTE glitch activity of 8.88x10^-7 yr^-1. The new glitches follow the seemingly unique time-to-next-glitch---glitch-size correlation established previously using RXTE data, with a slope of 5 d microHz^-1. For one glitch around which NICER observes two days on either side, we search for but do not see clear evidence of spectral nor pulse profile changes that may be associated with the glitch.
