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arXiv 2009.12043astro-ph.HE
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PSR B1534 +12的两种发射态

The two emission states of PSR B1534+12

S. Q. Wang, G. Hobbs, J. B. Wang, R. Manchester, N. Wang, S. B. Zhang, Y. Feng, W. -Y. Wang, D. Li, S. Dai, K. J. Lee, S. J. Dang, L. Zhang

摘要:

利用500米口径球面射电望远镜(FAST)观测到了一颗有中子星伴星的脉冲星PSR~B1534+12(J1537+1155)。我们发现,这颗脉冲星显示出两种不同的发射状态:一种是具有宽脉冲轮廓的弱态,一种是具有窄脉冲轮廓的爆发态。弱势国家总是存在的。根据我们目前的数据,我们不能确定弱态的脉冲能量是服从正态分布还是对数正态分布。爆发态能量分布遵循幂律。在爆发状态下的单脉冲发射的幅度变化显着,最亮的脉冲的峰值通量强度是平均脉冲的334倍强。我们还检查了仅使用亮脉冲可实现的计时精度,由于脉冲抖动,没有显示出明显的改善,因此量化了该脉冲星的抖动噪声水平。

英文摘要:

We have observed PSR~B1534+12 (J1537+1155), a pulsar with a neutron star companion, using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). We found that this pulsar shows two distinct emission states: a weak state with a wide pulse profile and a burst state with a narrow pulse profile. The weak state is always present. We cannot, with our current data, determine whether the pulse energy of the weak state follows a normal or a log-normal distribution. The burst state energy distribution follows a power-law. The amplitude of the single pulse emission in the burst state varies significantly; the peak flux intensity of the brightest pulse is 334 times stronger than that of the average pulse. We also examined the timing precision achievable using only bright pulses, which showed no demonstrable improvement because of pulse jitter and therefore quantified the jitter noise level for this pulsar.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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