Zobrazeno 1 - 10
of 1 382
pro vyhledávání: '"Lei, Y J"'
We analyze the relation between the emission radii of twin kilohertz quasi-periodic oscillations (kHz QPOs) and the co-rotation radii of the 12 neutron star low mass X-ray binaries (NS-LMXBs) which are simultaneously detected with the twin kHz QPOs a
Externí odkaz:
http://arxiv.org/abs/1701.02067
Autor:
Ai, Y. L., Wu, Xue-Bing, Yang, Jinyi, Yang, Qian, Wang, Feige, Guo, Rui, Zuo, Wenwen, Dong, Xiaoyi, Zhang, Y. -X., Yuan, H. -L., Song, Y. -H., Wang, Jianguo, Dong, Xiaobo, Yang, M., Wu, H., Shen, S. -Y., Shi, J. -R., He, B. -L., Lei, Y. -J., Li, Y. -B., Luo, A. -L., Zhao, Y. -H., Zhang, Hao-Tong
We present preliminary results of the quasar survey in Large Sky Area Multi- Object Fiber Spectroscopic Telescope (LAMOST) first data release (DR1), which includes pilot survey and the first year regular survey. There are 3921 quasars identified with
Externí odkaz:
http://arxiv.org/abs/1511.01647
We infer the emission positions of twin kilohertz quasi-periodic oscillations (kHz QPOs) in neutron star low mass X-ray binaries (NS-LMXBs) based on the Alfven wave oscillation model (AWOM). For most sources, the emission radii of kHz QPOs cluster ar
Externí odkaz:
http://arxiv.org/abs/1508.07394
Autor:
Luo, A. -L., Zhao, Y. -H., Zhao, G., Deng, L. -C., Liu, X. -W., Jing, Y. -P., Wang, G., Zhang, H. -T, Shi, J. -R., Cui, X. -Q., Chu, Y. -Q., Li, G. -P., Bai, Z. -R., Cai, Y., Cao, S. -Y., Cao, Z. -H, Carlin, J. L., Chen, H. Y., Chen, J. -J., Chen, K. -X., Chen, L., Chen, X. -L., Chen, X. -Y., Chen, Y., Christlieb, N., Chu, J. -R., Cui, C. -Z., Dong, Y. -Q., Du, B., Fan, D. -W., Feng, L., Fu, J. -N, Gao, P., Gong, X. -F., Gu, B. -Z., Guo, Y. -X., Han, Z. -W., He, B. -L., Hou, J. -L., Hou, Y. -H., Hou, W., Hu, H. -Z., Hu, N. -S., Hu, Z. -W., Huo, Z. -Y., Jia, L., Jiang, F. -H., Jiang, X., Jiang, Z. -B., Jin, G., Kong, X., Lei, Y. -J., Li, A. -H., Li, C. -H., Li, G. -W., Li, H. -N., Li, J., Li, Q., Li, S., Li, S. -S., Li, X. -N., Li, Y., Li, Y. -B., Li, Y. -P., Liang, Y., Lin, C. -C., Liu, C., Liu, G. -R., Liu, G. -Q., Liu, Z. -G., Lu, W. -Z., Luo, Y., Mao, Y. -D., Newberg, H., Ni, J. -J., Qi, Z. -X., Qi, Y. -J., Shen, S. -Y., Shi, H. -M., Song, J., Song, Y. -H., Su, D. -Q., Su, H. -J., Tang, Z. -H., Tao, Q. -S., Tian, Y., Wang, D., Wang, D. -Q., Wang, F. -F., Wang, G. -M., Wang, H., Wang, H. -C., Wang, J., Wang, J. -N., Wang, J. -L., Wang, J. -P., Wang, J. -X., Wang, L., Wang, M. -X., Wang, S. -G., Wang, S. -Q., Wang, X., Wang, Y. -N., Wang, Y., Wang, Y. -F., Wei, P., Wei, M. -Z., Wu, H., Wu, K. -F., Wu, X. -B., Wu, Y., Wu, Y. Z., Xing, X. -Z., Xu, L. -Z., Xu, X. -Q., Xu, Y., Yan, T. -S., Yang, D. -H., Yang, H. -F., Yang, H. -Q., Yang, M., Yao, Z. -Q., Yu, Y., Yuan, H., Yuan, H. -B., Yuan, H. -L., Yuan, W. -M., Zhai, C., Zhang, E. -P., Zhang, H. W., Zhang, J. -N., Zhang, L. -P., Zhang, W., Zhang, Y., Zhang, Y. -X., Zhang, Z. -C., Zhao, M., Zhou, F., Zhou, X., Zhu, J., Zhu, Y. -T., Zou, S. -C., Zuo, F.
The Large sky Area Multi-Object Spectroscopic Telescope (LAMOST) General Survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra of stars, galaxies and QSOs. Objects both i
Externí odkaz:
http://arxiv.org/abs/1505.01570
Publikováno v:
2013, MNRAS, 435, 3494
We test the relativistic precession model (RPM) and the MHD Alfven wave oscillation model (AWOM) for the kHz QPOs by the sources with measured NS masses and twin kHz QPO frequencies. For RPM, the derived NS mass of Cyg X-2 (SAX J1808.4-3658 and 4U 18
Externí odkaz:
http://arxiv.org/abs/1310.4037
Publikováno v:
Astronomische Nachrichten 335 (2014) 168-177
We collect the data of twin kilohertz quasi-periodic oscillations (kHz QPOs) published before 2012 from 26 neutron star (NS) low-mass X-ray binary (LMXB) sources, then we analyze the centroid frequency (\nu) distribution of twin kHz QPOs (lower frequ
Externí odkaz:
http://arxiv.org/abs/1301.5478
In this paper, the rms-flux (root mean square-flux) relation along the Z-track of the bright Z-Source Cyg X-2 is analyzed using the observational data of Rossi X-ray Timing Explorer (RXTE). Three types of rms-flux relations, i.e. positive, negative,
Externí odkaz:
http://arxiv.org/abs/1204.1849
Autor:
Zhang, C. M., Wei, Y. C., Yin, H. X., Zhao, Y. H., Lei, Y. J., Song, L. M., Zhang, F., Yan, Y.
Publikováno v:
Sci.China G53:114-116,2010
Based the Alfven wave oscillation model (AWOM) and relativistic precession model (RPM) for twin kHz QPOs, we estimate the emission positions of most detected kHz QPOs to be at r=18+-3 km (R/15km) except Cir X-1 at r = 30\+-5 km (R/15km). For the prop
Externí odkaz:
http://arxiv.org/abs/0912.0768
Autor:
Lei, Y. J., Qu, J. L., Song, L. M., Zhang, C. M., Zhang, S., Zhang, F., Wang, J. M., Li, Z. B., Zhang, G. B.
We report the detections of the anti-correlated soft and hard X-rays, and the time lags of $\sim$ hecto-second from the neutron star low-mass X-ray binary Cyg X-2, a well-known Z-type luminous source. Both the anti-correlation and the positive correl
Externí odkaz:
http://arxiv.org/abs/0801.3329
Publikováno v:
Astrophys.SpaceSci.310:307-315,2007
The rms (root mean square) variability is the parameter for understanding the emission temporal properties of X-ray binaries (XRBs) and active galactic nuclei (AGN). The rms-flux relation with Rossi X-ray Timing Explorer (RXTE) data for the dips and
Externí odkaz:
http://arxiv.org/abs/0706.0092