Zobrazeno 1 - 10
of 361
pro vyhledávání: '"Zhou, D. J."'
Autor:
Jiang, J. C., Xu, J. W., Niu, J. R., Lee, K. J., Zhu, W. W., Zhang, B., Qu, Y., Xu, H., Zhou, D. J., Cao, S. S., Wang, W. Y., Wang, B. J., Cao, S., Zhang, Y. K., Zhang, C. F., Gan, H. Q., Han, J. L., Hao, L. F., Huang, Y. X., Jiang, P., Li, D. Z., Li, H., Li, Y., Li, Z. X., Luo, R., Men, Y. P., Qian, L., Sun, J. H., Wang, L., Xu, Y. H., Xu, R. X., Yang, Y. P., Yao, R., Yue, Y. L., Yu, D. J., Yuan, J. P., Zhu, Y.
Fast radio bursts (FRBs) are extra-galactic sources with unknown physical mechanisms. They emit millisecond-duration radio pulses with isotropic equivalent energy of $10^{36}\sim10^{41}$ ergs. This corresponds to a brightness temperature of FRB emiss
Externí odkaz:
http://arxiv.org/abs/2408.03313
Autor:
Niu, J. R., Wang, W. Y., Jiang, J. C., Qu, Y., Zhou, D. J., Zhu, W. W., Lee, K. J., Han, J. L., Zhang, B., Li, D., Cao, S., Fang, Z. Y., Feng, Y., Fu, Q. Y., Jiang, P., Jing, W. C., Li, J., Li, Y., Luo, R., Meng, L. Q., Miao, C. C., Miao, X. L., Niu, C. H., Pan, Y. C., Wang, B. J., Wang, F. Y., Wang, H. Z., Wang, P., Wu, Q., Wu, Z. W., Xu, H., Xu, J. W., Xu, L., Xue, M. Y., Yang, Y. P., Yuan, M., Yue, Y. L., Zhao, D., Zhang, C. F., Zhang, D. D., Zhang, J. S., Zhang, S. B., Zhang, Y. K., Zhu, Y. H.
We report the first detection of polarization angle (PA) orthogonal jumps, a phenomenon previously only observed from radio pulsars, from a fast radio burst (FRB) source FRB 20201124A. We find three cases of orthogonal jumps in over two thousand burs
Externí odkaz:
http://arxiv.org/abs/2407.10540
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 530, Issue 2, May 2024, Pages 2433-2441
Polarized radio emission of RRAT J1854+0306 is investigated with single pulses using Five-hundred-meter-Aperture Spherical Telescope. Its emission is characterized by nulls, narrow and weak pulses, and occasional wide and intense bursts with a nullin
Externí odkaz:
http://arxiv.org/abs/2404.09418
Autor:
Su, W. Q., Han, J. L., Yang, Z. L., Wang, P. F., Yuan, J. P., Wang, C., Zhou, D. J., Wang, T., Yan, Y., Jing, W. C., Cai, N. N., Xie, L., Xu, J., Wang, H. G., Xu, R. X., You, X. P.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 530, Issue 2, May 2024, Pages 1506-1511
Double neutron star (DNS) systems offer excellent opportunities to test gravity theories. We report the timing results of PSR J1901+0658, the first pulsar discovered in the FAST Galactic Plane Pulsar Snapshot (GPPS) Survey. Based on timing observatio
Externí odkaz:
http://arxiv.org/abs/2403.11635
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:
Zhou, D. J., Han, J. L., Jing, W. C., Wang, P. F., Wang, C., Wang, T., Wang, W. -Y., Luo, R., Xu, J., Xu, R. X., Wang, H. G.
We report five new fast radio bursts (FRBs) discovered from the Galactic Plane Pulsar Snapshot (GPPS) survey by the Five-hundred-meter Aperture Spherical radio Telescope (FAST): FRB\,20210126, FRB\,20210208, FRB\,20210705, FRB\,20211005 and FRB\,2022
Externí odkaz:
http://arxiv.org/abs/2309.04826
Autor:
Wang, P. F., Han, J. L., Xu, J., Wang, C., Yan, Y., Jing, W. C., Su, W. Q., Zhou, D. J., Wang, T.
Pulsar polarization profiles are very basic database for understanding the emission processes in pulsar magnetosphere. After careful polarization calibration of the 19-beam L-band receiver and verification of beam-offset observation results, we obtai
Externí odkaz:
http://arxiv.org/abs/2307.10340
Autor:
Chen, X., Yan, Y., Han, J. L., Wang, C., Wang, P. F., Jing, W. C., Lee, K. J., Zhang, B., Xu, R. X., Wang, T., Yang, Z. L., Su, W. Q., Cai, N. N., Wang, W. Y., Qiao, G. J., Xu, J., Zhou, D. J.
Publikováno v:
Published online by nature astronomy: 17 August 2023
Pulsars radiate radio signals when they rotate. However, some old pulsars often stop radiating for some periods. The underlying mechanism remains unknown, while the magnetosphere during nulling phases is hard to probe due to the absence of emission m
Externí odkaz:
http://arxiv.org/abs/2306.12017
Autor:
Jing, W. C., Han, J. L., Hong, Tao, Wang, Chen, Gao, X. Y., Hou, L. G., Zhou, D. J., Xu, J., Yang, Z. L.
The pulsar B0458+46 was previously believed to have a distance of about 1.3$~$kpc and to be associated with a nearby supernova remnant, SNR HB9 (G160.9+2.6). We observe the neutral hydrogen (HI) absorption spectrum of PSR B0458+46 by using the Five-h
Externí odkaz:
http://arxiv.org/abs/2306.01246
Autor:
Su, W. Q., Han, J. L., Wang, P. F., Yuan, J. P., Wang, Chen, Zhou, D. J., Wang, Tao, Yan, Yi, Jing, W. C., Yang, Z. L., Cai, N. N., Chen, Xue, Xu, Jun, Xie, Lang, Wang, H. G., Xu, R. X., You, X. P.
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 526, Issue 2, December 2023, Pages 2645-2656
Timing observations are crucial for determining the basic parameters of newly discovered pulsars. Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) with the L-band 19-beam receiver covering the frequency range of 1.0--1.5 GHz, th
Externí odkaz:
http://arxiv.org/abs/2305.16754