Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Zhang, Haotong"'
Autor:
Yuan, Hailong, Li, Zhenwei, Bai, Zhongrui, Dong, Yiqiao, Cheng, Yao, Chen, Xuefei, Zhixiang, Zhang, Wang, Mengxin, Yang, Mingkuan, Huang, Xin, He, Yuji, Zhang, Liyun, Wang, Junfeng, Zhao, Yongheng, Chu, Yaoquan, Zhang, Haotong
Double white dwarf systems are of great astrophysical importance in the field of gravitational wave and Type Ia supernova. While the binary fraction of CO core white dwarf is about a few percents, the extremely low mass white dwarfs are all thought t
Externí odkaz:
http://arxiv.org/abs/2310.04108
Autor:
Yuan, Hailong, Wang, Song, Bai, Zhongrui, Wang, Yue, Dong, Yiqiao, Wang, Mengxin, Yu, Sicheng, Zhao, Yongheng, Chu, Yaoquan, Liu, Jifeng, Zhang, Haotong
Publikováno v:
ApJ, 940(2), 2022, 165
We report the discovery of one possible neutron star binary ($P_{\rm orb} =$ 0.8666 day) by using the LAMOST low-resolution spectroscopic data. The visible companion is a late A-type dwarf ($T_{\rm eff} = 7900 \pm 200$ K; log$g$ $=$ 4.3$\pm$0.2; $M =
Externí odkaz:
http://arxiv.org/abs/2210.09987
Autor:
Zheng, Ling-Lin, Sun, Mouyuan, Gu, Wei-Min, Yi, Tuan, Zhang, Zhi-Xiang, Wang, Pei, Wang, Junfeng, Wu, Jianfeng, Wang, Song, Zhang, Jia, Li, Chun-Qian, Shi, Jian-Rong, Shao, Yong, Li, Xiang-Dong, Fu, Jin-Bo, Yang, Fan, Bai, Zhongrui, Bai, Yu, Zhang, Haotong, Liu, Jifeng
Recent studies have revealed the global deposition on Earth of radioactive elements (e.g., $^{60}$Fe) resulting from the metal-enriched ejecta of nearby (within $\sim 100$ pc) supernova explosions. The majority of neutron stars in our Solar neighborh
Externí odkaz:
http://arxiv.org/abs/2210.04685
Autor:
Yi, Tuan, Gu, Wei-Min, Zhang, Zhi-Xiang, Zheng, Ling-Lin, Sun, Mouyuan, Wang, Junfeng, Bai, Zhongrui, Wang, Pei, Wu, Jianfeng, Bai, Yu, Wang, Song, Zhang, Haotong, Dong, Yize, Shao, Yong, Li, Xiang-Dong, Zhang, Jia, Huang, Yang, Yang, Fan, Yu, Qingzheng, Mu, Hui-Jun, Fu, Jin-Bo, Qi, Senyu, Guo, Jing, Fang, Xuan, Zheng, Chuanjie, Li, Chun-Qian, Shi, Jian-Rong, Chen, Huanyang, Liu, Jifeng
Optical time-domain surveys can unveil and characterize exciting but less-explored non-accreting and/or non-beaming neutron stars (NS) in binaries. Here we report the discovery of such a NS candidate using the LAMOST spectroscopic survey. The candida
Externí odkaz:
http://arxiv.org/abs/2209.12141
Autor:
Mazeh, Tsevi, Faigler, Simchon, Bashi, Dolev, Shahaf, Sahar, Davidson, Niv, Green, Matthew, Gomel, Roy, Maoz, Dan, Sussholz, Amitay, Dong, Subo, Zhang, Haotong, Liu, Jifeng, Wang, Song, Luo, Ali, Zheng, Zheng, Hallakoun, Na'ama, Perdelwitz, Volker, Latham, David W., Ribas, Ignasi, Baroch, David, Morales, Juan Carlos, Nagel, Evangelos, Santos, Nuno C., Ciardi, David R., Christiansen, Jessie L., Lund, Michael B., Winn, Joshua N.
We have identified 2XMM J125556.57+565846.4, at a distance of 600 pc, as a binary system consisting of a normal star and a probable dormant neutron star. Optical spectra exhibit a slightly evolved F-type single star, displaying periodic Doppler shift
Externí odkaz:
http://arxiv.org/abs/2206.11270
Autor:
Yan, Hongliang, Li, Haining, Wang, Song, Zong, Weikai, Yuan, Haibo, Xiang, Maosheng, Huang, Yang, Xie, Jiwei, Dong, Subo, Yuan, Hailong, Bi, Shaolan, Chu, Yaoquan, Cui, Xiangqun, Deng, Licai, Fu, Jianning, Han, Zhanwen, Hou, Jinliang, Li, Guoping, Liu, Chao, Liu, Jifeng, Liu, Xiaowei, Luo, Ali, Shi, Jianrong, Wu, Xuebing, Zhang, Haotong, Zhao, Gang, Zhao, Yongheng
Publikováno v:
The Innovation. 3(2),100224 (2022)
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), also known as the Guoshoujing Telescope, is a major national scientific facility for astronomical research located in Xinglong, China. Beginning with a pilot survey in 2011, LAMO
Externí odkaz:
http://arxiv.org/abs/2203.14300
Autor:
Wiktorowicz, Grzegorz, Lu, Youjun, Wyrzykowski, Łukasz, Zhang, Haotong, Liu, Jifeng, Justham, Stephen, Belczynski, Krzysztof
Publikováno v:
2020 ApJ 905 134
Until recently, black holes (BHs) could be discovered only through accretion from other stars in X-ray binaries, or in merging double compact objects. Improvements in astrometric and spectroscopic measurements have made it possible to detect BHs also
Externí odkaz:
http://arxiv.org/abs/2006.08317
Autor:
Liu, Jifeng, Zhang, Haotong, Howard, Andrew W., Bai, Zhongrui, Lu, Youjun, Soria, Roberto, Justham, Stephen, Li, Xiangdong, Zheng, Zheng, Wang, Tinggui, Belczynski, Krzysztof, Casares, Jorge, Zhang, Wei, Yuan, Hailong, Dong, Yiqiao, Lei, Yajuan, Isaacson, Howard, Wang, Song, Bai, Yu, Shao, Yong, Gao, Qing, Wang, Yilun, Niu, Zexi, Cui, Kaiming, Zheng, Chuanjie, Mu, Xiaoyong, Zhang, Lan, Wang, Wei, Heger, Alexander, Qi, Zhaoxiang, Liao, Shilong, Lattanzi, Mario, Gu, Wei-Min, Wang, Junfeng, Wu, Jianfeng, Shao, Lijing, Shen, Rongfeng, Wang, Xiaofeng, Bregman, Joel, Di Stefano, Rosanne, Liu, Qingzhong, Han, Zhanwen, Zhang, Tianmeng, Wang, Huijuan, Ren, Juanjuan, Zhang, Junbo, Zhang, Jujia, Wang, Xiaoli, Cabrera-Lavers, Antonio, Corradi, Romano, Rebolo, Rafael, Zhao, Yongheng, Zhao, Gang, Chu, Yaoquan, Cui, Xiangqun
Publikováno v:
Nature, 575, 618-621 (2019)
All stellar mass black holes have hitherto been identified by X-rays emitted by gas that is accreting onto the black hole from a companion star. These systems are all binaries with black holes below 30 M$_{\odot}$$^{1-4}$. Theory predicts, however, t
Externí odkaz:
http://arxiv.org/abs/1911.11989