Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Zhe-geng Chen"'
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 277 (2024)
Radio spectral shape of quasars can provide insight into the ages of quasars. We have compiled data for 1804 quasars with z ≲ 1 from the Sloan Digital Sky Survey (SDSS). Additionally, these quasars were also mapped by the Low-Frequency Array at 144
Externí odkaz:
https://doaj.org/article/6b21445620b447dbb1e51f4e89f1a031
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 62 (2024)
Gamma-ray bursts (GRBs) as the most energetic explosions in the modern universe have been studied for over half a century, but the physics of the particle acceleration and radiation responsible for their observed spectral behaviors are still not well
Externí odkaz:
https://doaj.org/article/fc09a2a9014e4adba3c6d38db3a8e069
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 264, Iss 2, p 52 (2023)
This paper provides the compilations of properties of the quasars newly obtained by the Sloan Digital Sky Survey (SDSS) during the fourth stage (SDSS-IV). The catalog is available on the journal's website. We have measured the main properties of emis
Externí odkaz:
https://doaj.org/article/62c05a1cf64d4e4098058ec73b8b3c38
Autor:
Zhi-Fu Chen, Huan-Chang Qin, Jin-Ting Cai, Yu-Tao Zhou, Zhe-Geng Chen, Ting-Ting Pang, Zhi-Wen Wang, Kang-Fa Cheng
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 265, Iss 2, p 46 (2023)
We have collected 10,025 foreground–background quasar pairs with projected distances d _p < 500 kpc from the large quasar catalog of the Sloan Digital Sky Survey DR16Q. We investigate the properties of the Mg ii absorption lines with W _r > 0.15 Å
Externí odkaz:
https://doaj.org/article/ccda1f36f4d349ecb9181be364281fc0
Autor:
Zhi-Fu Chen, Huan-Chang Qin, Jin-Ting Cai, Yu-Tao Zhou, Zhe-Geng Chen, Ting-Ting Pang, Zhi-Wen Wang, Kang-Fa Cheng
We have collected 10025 foreground-background quasar pairs with projected distances $d_p0.15$ Å around foreground quasars, including both the LOS (line-of-sights of foreground quasars) and transverse (TRA, perpendicular to the LOS) absorptions. Both
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b46de784615183936338b5266f348a2
Publikováno v:
Research in Astronomy and Astrophysics. 21:083
Making use of quasar spectra from LAMOST, in the spectral data around the Mg ii emission lines, research described in this paper has detected 217 Mg ii narrow absorption lines (NALs) with W r λ 2796 ≥ 3 σ w and W r λ 2803 ≥ 2 σ w in a redshif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c79858f7c8f89f7b594442e9438758e9
https://doi.org/10.1088/1674-4527/21/4/83
https://doi.org/10.1088/1674-4527/21/4/83
Autor:
Huan-Chang Qin, Xiao-Hua Mo, Shuang-Xi Yi, Yan-Chun Gao, Ting-Ting Pang, Run-Jin Gui, Zhi-Fu Chen, Zhe-Geng Chen
Publikováno v:
The Astrophysical Journal Supplement Series. 250:3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee831df8c34efb828070d3dd37f3b1a3
https://doi.org/10.3847/1538-4365/aba520
https://doi.org/10.3847/1538-4365/aba520
Publikováno v:
The Astrophysical Journal. 893:25
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42b0729fd98376bfb78eafa7d845e92d
https://doi.org/10.3847/1538-4357/ab7896
https://doi.org/10.3847/1538-4357/ab7896
Autor:
Ze-lin, Dai, Xiang-dong, Xu, Yu, Gu, Rui-jiao, Zou, Shou-sheng, Han, Yong, Peng, Yu-xiang, Lian, Fu, Wang, Xin-rong, Li, Zhe-geng, Chen, Ming-hui, Sun, Ya-dong, Jiang
Publikováno v:
Guang pu xue yu guang pu fen xi = Guang pu. 37(3)
In this work, regenerated cellulose films were prepared with an iced dissolution method, while the physical morphologies and crystal types of the products were systematically characterized with scanning electron microscope (SEM), Fourier transform in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::7507804263441208454253f4b500ddff
https://pubmed.ncbi.nlm.nih.gov/30148547
https://pubmed.ncbi.nlm.nih.gov/30148547
Autor:
Zhi-Fu Chen, Run-Jin Gui, Shuang-Xi Yi, Xiao-Hua Mo, Zhe-Geng Chen, Ting-Feng Yi, Zhi-Wen Wang, Ting-Ting Pang
Publikováno v:
The Astrophysical Journal Supplement Series. 244:36
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df0d5300ad09b985bf546f2c2a8d7957
https://doi.org/10.3847/1538-4365/ab41fe
https://doi.org/10.3847/1538-4365/ab41fe