Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Kou, F. F."'
How pulsars radiate is a long-standing problem. Detailed polarization measurements of individual pulses shed light on currently unknown emission processes. Recently, based on supersensitive observations, dwarf pulses have been recognized as weak narr
Externí odkaz:
http://arxiv.org/abs/2403.01084
Autor:
Wang, S. Q., Wang, J. B., Wang, N., Yao, J. M., Hobbs, G., Dai, S., Kou, F. F., Miao, C. C., Li, D., Feng, Y., Dang, S. J., Wang, D. H., Wang, P., Yuan, J. P., Zhang, C. M., Zhang, L., Zhang, S. B., Zhu, W. W.
We report on an {unusually} bright observation of PSR J1720$-$0533 using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The pulsar is in a black widow system that {was discovered by the Commensal Radio Astronomy FAST Survey (CRAFTS
Externí odkaz:
http://arxiv.org/abs/2111.02690
Autor:
Kou, F. F., Yan, W. M., Peng, B., Lu, J. G., Liu, K., Zhang, C. M., Strom, R. G., Wang, L., Yuan, J. P., Yuen, Rai, Yu, Y. Z., Yao, J. M., Liu, B., Yan, J., Jiang, P., Jin, C. J., Li, D., Qian, L., Yue, Y. L., Zhu, Y.
We present a detailed single-pulse analysis for PSR B1929+10 based on observations with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The main pulse and interpulse are found to be modulated with a periodicity of $\sim12$ times the
Externí odkaz:
http://arxiv.org/abs/2012.10156
Autor:
Dang, S. J., Yuan, J. P., Manchester, R. N., Li, L., Wang, N., Wang, J. B., Hobbs, G., Liu, Z. Y., Kou, F. F.
We have used the Nanshan 25-m Radio Telescope at Xinjiang Astronomical Observatory to obtain timing observations of 87 pulsars from 2002 July to 2014 March. Using the "Cholesky" timing analysis method we have determined positions and proper motions f
Externí odkaz:
http://arxiv.org/abs/2005.02200
We apply theoretical spin-down models of magnetospheric evolution and magnetic field decay to simulate the possible evolution of PSR J0250+5854, which is the slowest-spinning radio pulsar detected to date. Considering the alignment of inclination ang
Externí odkaz:
http://arxiv.org/abs/1901.00300
We presented timing results of PSR B2035+36 using ~9-yr observations with the Nanshan 25-m radio telescope. PSR B2035+36 was reported to exhibit significant changes in pulse profile correlated with spin-down state variations. We found that the pulsar
Externí odkaz:
http://arxiv.org/abs/1801.01248
Akademický článek
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Autor:
Tong, H., Kou, F. F.
The coupled evolution of pulsar rotation and inclination angle in the wind braking model is calculated. The oblique pulsar tends to align. The pulsar alignment will affect its spin-down behavior. As a pulsar evolves from the magneto-dipole radiation
Externí odkaz:
http://arxiv.org/abs/1604.01231
Eight pulsars have low braking indices, which challenge the magnetic dipole braking of pulsars. 222 pulsars and 15 magnetars have abnormal distribution of frequency second derivatives, which also make contradiction with classical understanding. How n
Externí odkaz:
http://arxiv.org/abs/1512.01679
PSR B0540-69 has braking index measurement in its persistent state: n=2.129 \pm 0.012. Recently, it is reported to have spin-down state changes: a suddenly 36 % increase in the spin-down rate. Combining the persistent state braking index measurement
Externí odkaz:
http://arxiv.org/abs/1507.00643