Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Zuo, Wenwen"'
Based on the magnetization, an accretion disk with large-scale magnetic field can be separated into either standard and normal evolution (SANE) or magnetically arrested disk (MAD), which are difficult to identify from observations. It is still unclea
Externí odkaz:
http://arxiv.org/abs/2408.00321
Autor:
Chen, Ying, Luo, Bin, Brandt, W. N., Zuo, Wenwen, Dix, Cooper, Ha, Trung, Matthews, Brandon, Paul, Jeremiah D., Plotkin, Richard M., Shemmer, Ohad
We present near-infrared spectroscopy of ten weak emission-line quasars (WLQs) at redshifts of $z\sim2$, obtained with the Palomar 200-inch Hale Telescope. WLQs are an exceptional population of type 1 quasars that exhibit weak or no broad emission li
Externí odkaz:
http://arxiv.org/abs/2407.03422
Autor:
Zuo, Wenwen, Guo, Hengxiao, Sun, Jingbo, Yuan, Qi, Lira, Paulina, Gu, Minfeng, Edwards, Philip G., Gupta, Alok C., Kishore, Shubham, Stevens, Jamie, An, Tao, Cai, Zhen-Yi, Feng, Haicheng, Ho, Luis C., Ilić, Dragana, Kovačević, Andjelka B., Li, ShaSha, Mezcua, Mar, Popović, Luka Č., Sun, Mouyuan, Tripathi, Tushar, U., Vivian, Vince, Oliver, Wang, Jianguo, Wang, Junxian, Wang, Shu, Wu, Xuebing, Zheng, Zhenya
To investigate the short-term variability and determine the size of the optical continuum emitting size of intermediate-mass black holes (IMBHs), we carried out high-cadence, multi-band photometric monitoring of a Seyfert 1 galaxy J0249-0815 across t
Externí odkaz:
http://arxiv.org/abs/2405.11750
Autor:
Zuo, Wenwen, Wu, Xue-Bing, Fan, Xiaohui, Green, Richard, Yi, Weiming, Schulze, Andreas, Wang, Ran, Bian, Fuyan
Using a high luminosity ($L_{\rm bol} \sim 10^{47.5} - 10^{48.3}$ erg s$^{-1}$), high redshift ($3.2 < z < 3.8$) quasar sample of 19 quasars with optical and near-infrared spectroscopy, we investigate the reliability of the CIV-based black hole mass
Externí odkaz:
http://arxiv.org/abs/2005.04002
Akademický článek
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Autor:
Yi, Weimin, Zuo, Wenwen, Yang, Jinyi, Wang, Feige, Timlin, John, Grier, Catherine, Wu, Xue-Bing, Fan, Xiaohui, Bai, Jin-Ming
We present an observational study of 22 broad absorption line quasars (BAL QSOs) at $3\lesssim z \lesssim5$ based on optical/near-IR spectroscopy, aiming to investigate quasar winds and their effects. The near-IR spectroscopy covers the \hb\ and/or \
Externí odkaz:
http://arxiv.org/abs/1904.05531
We study the relation between the metallicity of quasar broad line region (BLR) and black hole (BH) mass ($10^{7.5}M_{\odot} \sim 10^{10}M_{\odot}$) and quasar bolometric luminosity ($10^{44.6}erg/s \sim 10^{48} erg/s$) using a sample of $\sim$130,00
Externí odkaz:
http://arxiv.org/abs/1807.01978
Autor:
Yang, Qian, Wu, Xue-Bing, Fan, Xiaohui, Jiang, Linhua, McGreer, Ian, Green, Richard, Yang, Jinyi, Schindler, Jan-Torge, Wang, Feige, Zuo, Wenwen, Fu, Yuming
We present a new algorithm to estimate quasar photometric redshifts (photo-$z$s), by considering the asymmetries in the relative flux distributions of quasars. The relative flux models are built with multivariate Skew-t distributions in the multi-dim
Externí odkaz:
http://arxiv.org/abs/1710.09155
We present the discovery of strong Balmer line absorption in H$\alpha$ to H$\gamma$ in two luminous low-ionization broad absorption line quasars (LoBAL QSOs) at z~1.5, with black hole masses around $10^{10}$ $M_\odot$ from near-IR spectroscopy. There
Externí odkaz:
http://arxiv.org/abs/1710.08563
Autor:
Schulze, Andreas, Schramm, Malte, Zuo, Wenwen, Wu, Xue-Bing, Urrutia, Tanya, Kotilainen, Jari, Reynolds, Thomas, Terao, Koki, Nagao, Tohru, Izumiura, Hideyuki
We present near-IR spectroscopy of 22 luminous low-ionization broad absorption line quasars (LoBAL QSOs) at redshift 1.3
Externí odkaz:
http://arxiv.org/abs/1709.06335