IHEP OpenIR  > 粒子天体物理中心
ON THE RELAXATION BEHAVIORS OF SLOW AND CLASSICAL GLITCHES: OBSERVATIONAL BIASES AND THEIR OPPOSITE RECOVERY TRENDS
Xie, Y; Zhang SN(张双南); Zhang, SN
2013
发表期刊ASTROPHYSICAL JOURNAL
卷号778期号:1页码:31
摘要We study the pulsar timing properties and the data analysis methods of glitch recoveries. In some cases one first fits the times of arrival (TOAs) to obtain the "time-averaged" frequency. and its first derivative.., and then fits models to them. However, our simulations show that. and. obtained in this way are systematically biased unless the time intervals between the nearby data points of TOAs are smaller than about 10(4) s, which is much shorter than typical observation intervals. Alternatively, glitch parameters can be obtained by fitting the phases directly with relatively smaller biases, but the initial recovery time scale is usually chosen by eye, which may introduce a strong bias. We also construct a phenomenological model by assuming a pulsar spin-down law of (nu) over dot nu(-3) = -H(0)G(t) with G(t) = 1 + kappa e(-t/iota) for a glitch recovery, where H-0 is a constant and. and t are the glitch parameters to be found. This model can reproduce the observed data of slow glitches from B1822-09 and the giant classical glitch of B2334+61, with kappa < 0 or kappa > 0, respectively. We then use this model to simulate TOA data and test several fitting procedures for a glitch recovery. The best procedure is (1) to use a very high order polynomial (e. g., to 50th order) to precisely describe the phase, (2) obtain.(t) and..(t) from the polynomial, then (3) obtain the glitch parameters from nu(t) or (nu) over dot (t). Finally, the uncertainty in the starting time t(0) of a classical glitch causes uncertainties in some glitch parameters, but less so for a slow glitch, t(0), of which can be determined from data.
关键词magnetic fields pulsars: general pulsars: individual (B1822-09, B2334+61) stars: neutron
学科领域Astronomy & Astrophysics
DOI10.1088/0004-637X/778/1/31
收录类别SCI
WOS记录号WOS:000327131700031
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224390
专题粒子天体物理中心
推荐引用方式
GB/T 7714
Xie, Y,Zhang SN,Zhang, SN. ON THE RELAXATION BEHAVIORS OF SLOW AND CLASSICAL GLITCHES: OBSERVATIONAL BIASES AND THEIR OPPOSITE RECOVERY TRENDS[J]. ASTROPHYSICAL JOURNAL,2013,778(1):31.
APA Xie, Y,张双南,&Zhang, SN.(2013).ON THE RELAXATION BEHAVIORS OF SLOW AND CLASSICAL GLITCHES: OBSERVATIONAL BIASES AND THEIR OPPOSITE RECOVERY TRENDS.ASTROPHYSICAL JOURNAL,778(1),31.
MLA Xie, Y,et al."ON THE RELAXATION BEHAVIORS OF SLOW AND CLASSICAL GLITCHES: OBSERVATIONAL BIASES AND THEIR OPPOSITE RECOVERY TRENDS".ASTROPHYSICAL JOURNAL 778.1(2013):31.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
8130.pdf(1669KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Xie, Y]的文章
[张双南]的文章
[Zhang, SN]的文章
百度学术
百度学术中相似的文章
[Xie, Y]的文章
[张双南]的文章
[Zhang, SN]的文章
必应学术
必应学术中相似的文章
[Xie, Y]的文章
[张双南]的文章
[Zhang, SN]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。