45 citations · 173 across the 18 of their papers we have counts for
18 papers
Unveiling the Multifaceted GRB 200613A: Prompt Emission Dynamics, Afterglow Evolution, and the Host Galaxy's Properties
Shao-Yu Fu, Dong Xu, Wei-Hua Lei +17
We present our optical observations and multi-wavelength analysis of the GRB\,200613A detected by \texttt{Fermi} satellite. Time-resolved spectral analysis of the prompt -ray em…
The white-light superflares from cool stars in GWAC triggers
Guang-Wei Li, Liang Wang, Hai-Long Yuan +16
M-type stars are the ones that flare most frequently, but how big their maximum flare energy can reach is still unknown. We present 163 flares from 162 individual M2 through L1-typ…
SN 2019tua : A Type IIb Supernova with Multiple Bumps in the Light Curves
Xin-Bo Huang, Xiang-Gao Wang, Long Li +9
We present photometric and spectroscopic observations and analysis of the type IIb supernova (SN) SN 2019tua, which exhibits multiple bumps in its declining light curves between 40…
White-light superflare and long-term activity of the nearby M7 type binary EI~Cnc observed with GWAC system
Hua-Li Li, Jing Wang, Li-Ping Xin +14
Stellar white-light flares are believed to play an essential role on the physical and chemical properties of the atmosphere of the surrounding exoplanets. Here we report an optical…
A huge-amplitude white-light superflare on a L0 brown dwarf discovered by GWAC survey
Li-Ping Xin, Hua-li Li, Jing Wang +21
White-light superflares from ultra cool stars are thought to be resulted from magnetic reconnection, but the magnetic dynamics in a fully convective star is not clear yet. In this…
Magnetic activities and parameters of 43 flare stars in the GWAC archive
Guang-Wei Li, Chao Wu, Gui-Ping Zhou +19
In the archive of the Ground Wide Angle Camera (GWAC), we found 43 white light flares from 43 stars, among which, three are sympathetic or homologous flares, and one of them also h…
Suspended and restored activities of A Nearby Super Massive Black Hole
J. Wang, D. W. Xu, S. S. Sun +4
The discovery of spectral type transition of active galactic nuclei (AGNs), the so-called changing-look(CL) phenomenon, challenges the widely accepted AGN paradigm, not only in the…
A Pilot Study of Catching High- GRBs and Exploring Circumburst Environment in the Forthcoming SVOM Era
J. Wang, Y. L. Qiu, J. Y. Wei
Rapid spectroscopy of GRB afterglows is an important and hard task. Based on the archival XS-GRB spectral database, we here perform a pilot study on the afterglow's spectroscopy in…
Photometric and spectroscopic Studies of Superoutbursts of Three Dwarf Novae Independently Identified by The SVOM/GWAC System in 2018
J. Wang, H. L. Li, L. P. Xin +27
We report our photometric and spectroscopic follow-up observations of the superoutbursts of three dwarf novae (GWAC\,180415A, GWAC\,181017A and GWAC\,181211A) identified independen…
Two New "Turn-off" Changing-look Active Galactic nuclei and Implication on "Partially Obscured" AGNs
J. Wang, D. W. Xu, Y. Wang +3
We here report a spectroscopic identification of two new changing-look AGNs (CL-AGNs): SDSS\,J104705.16+544405.8 and SDSS\,J120447.91+170256.8 both with a "turn-off" type transitio…
Learning Transient Universe in Near-Ultraviolet By Wide-angle Cameras
J. Wang, E. W. Liang, J. Y. Wei
We perform a detailed analysis and simulations on the transient detection capability in the near-ultraviolet (NUV) band by focusing on some major local transient events. These even…
Powerful Radio Emission From Low-mass Supermassive Black Holes Favors Disk-like Bulges
J. Wang, Y. Xu, D. W. Xu +1
The origin of spin of low-mass supermassive black hole (SMBH) is still a puzzle at present. We here report a study on the host galaxies of a sample of radio-selected nearby ($z<0.0…
18-Months Operation of Lunar-based Ultraviolet Telescope: A Highly Stable Photometric Performance
J. Wang, X. M. Meng, X. H. Han +7
We here report the photometric performance of Lunar-based Ultraviolet telescope (LUT), the first robotic telescope working on the Moon, for its 18-months operation. In total, 17 IU…
A Correlated Study of Optical and X-ray Afterglows of GRBs
Liang Li, Xue-Feng Wu, Yong-Feng Huang +10
We study an extensive sample of 87 GRBs for which there are well sampled and simultaneous optical and X-ray light-curves. We extract the cleanest possible signal of the afterglow c…
An Unprecedented Constraint on Water Content in the Sunlit Lunar Exosphere Seen by Lunar-Based Ultraviolet Telescope of Chang'e-3 Mission
J. Wang, C. Wu, Y. L. Qiu +6
The content of molecules in the tenuous exosphere of the Moon is still an open issue at present. We here report an unprecedented upper limit of the content of th…
Spectroscopic and Photometric Observations of Unidentified Ultraviolate Variable Objects in GUVV-2 Catalog
Y. Li, J. Wang, J. Y. Wei +1
An NUV-optical diagram made for sources from the secend Galaxy Evolution Explorer (GALEX) Ultraviolet Variability (GUVV-2) Catalog provide us a method to tentatively classify the u…
No Enough Evidence In Support Of Correlation Between Gamma-ray Bursts And Foreground Galaxiy Clusters In the Swift Era
J. Wang, J. Y. Wei
The correlation between distant Gamma-Ray Bursts (GRBs) and foreground galaxy clusters is re-examined by using the well localized (with an accuracy down to a few arcseconds) Swift/…
A GRB Follow-up System at the Xinglong Observatory and Detection of the High-Redshift GRB 060927
W. Zheng, J. Deng, M. Zhai +6
A gamma-ray burst (GRB) optical photometric follow-up system at the Xinglong Observatory of National Astronomical Observatories of China (NAOC) has been constructed. It uses the 0.…