期刊
ASTROPHYSICAL JOURNAL
卷 877, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/ab1849
关键词
pulsars: individual (PSR J1926-0652)
资金
- National Key R&D Program of China [2017YFA0402600]
- State Key Development Program for Basic Research [2015CB857100]
- National Natural Science Foundation of China [U1731238, 11725313, 11690024, 11743002, 11873067, U1731218, 11565010, 11603046, U1531246]
- CAS Strategic Priority Research Program [XDB23000000]
- CAS International Partnership Program [114A11KYSB20160008]
- Chinese Academy of Science Pioneer Hundred Talents Program
- Science and Technology Fund of Guizhou Province [(2015) 4015, (2016)-4008]
- European Research Council [610058]
- FAST FELLOWSHIP
- MPG-CAS Joint Project Low-Frequency Gravitational Wave Astronomy and Gravitational Physics in Space
- Australian Government
- UK Science and Technology Facilities Council (STFC)
- STFC [1963541, ST/P000649/1] Funding Source: UKRI
We describe PSR J1926-0652, a pulsar recently discovered with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Using sensitive single-pulse detections from FAST and long-term timing observations from the Parkes 64 m radio telescope, we probed phenomena on both long and short timescales. The FAST observations covered a wide frequency range from 270 to 800 MHz, enabling individual pulses to be studied in detail. The pulsar exhibits at least four profile components, short-term nulling lasting from 4 to 450 pulses, complex subpulse drifting behaviors and intermittency on scales of tens of minutes. While the average band spacing P-3 is relatively constant across different bursts and components, significant variations in the separation of adjacent bands are seen, especially near the beginning and end of a burst. Band shapes and slopes are quite variable, especially for the trailing components and for the shorter bursts. We show that for each burst the last detectable pulse prior to emission ceasing has different properties compared to other pulses. These complexities pose challenges for the classic carousel-type models.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据