81 citations · 324 across the 18 of their papers we have counts for
18 papers
Exploration of the origin of 2020 X-ray outburst in OJ 287
Shifeng Huang, Shaoming Hu, Hongxing Yin +3
Research into OJ 287 has been ongoing for many years. In 2020 April-June, this source underwent the second highest X-ray outburst (second only to the 2016-2017 outburst) and the me…
Rapid X-ray Variability in Mkn 421 during a Multiwavelength Campaign
Alex G. Markowitz, Krzysztof Nalewajko, Gopal Bhatta +47
The study of short-term variability properties in AGN jets has the potential to shed light on their particle acceleration and emission mechanisms. We report results from a four-day…
The X-ray outburst of PG 1553+113: A precession effect of two jets in the supermassive black hole binary system
Shifeng Huang, Hongxing Yin, Shaoming Hu +4
Blazar PG 1553+113 is thought to be a host of supermassive black hole binary (SMBHB) system. A 2.2-year quasi-periodicity in the -ray light curve was detected, possibly result o…
Two contact binaries with mass ratios close to the minimum mass ratio
Kai Li, Qi-Qi Xia, Chun-Hwey Kim +5
The cut-off mass ratio is under debate for contact binaries. In this paper, we present the investigation of two contact binaries with mass ratios close to the low mass ratio limit.…
Gaia17biu/SN 2017egm in NGC 3191: The closest hydrogen-poor superluminous supernova to date is in a "normal", massive, metal-rich spiral galaxy
Subhash Bose, Subo Dong, A. Pastorello +55
Hydrogen-poor superluminous supernovae (SLSNe-I) have been predominantly found in low-metallicity, star-forming dwarf galaxies. Here we identify Gaia17biu/SN 2017egm as an SLSN-I o…
A possible giant planet orbiting the cataclysmic variable LX Ser
K. Li, S. -M. Hu, J. -L. Zhou +6
LX Ser is a deeply eclipsing cataclysmic variable with an orbital period of . Sixty two new eclipse times were determined by our observations and the AAVSO Internatio…
WES - Weihai Echelle Spectrograph
Dong-Yang Gao, Hang-Xin Ji, Chen Cao +7
The Weihai Echelle Spectrograph (WES) is the first fiber-fed echelle spectrograph for astronomical observation in China. It is primarily used for chemical abundance and asteroseism…
The active W UMa type binary star V781 Tau revisited
Kai Li, Dongyang Gao, Shaoming Hu +3
In this paper, new determined BVR_cI_c light curves and radial velocities of V781 Tau are presented. By analyzing the light curves and radial velocities simultaneously, we found th…
The Weihai Observatory search for close-in planets orbiting giant stars
Robert A. Wittenmyer, Dongyang Gao, Shao Ming Hu +3
Planets are known to orbit giant stars, yet there is a shortage of planets orbiting within ~0.5 AU (P<100 days). First-ascent giants have not expanded enough to engulf such planets…
GRB Spectra in the complex of synchrotron and Compton processes
Yunguo Jiang, Shao-Ming Hu, Xu Chen +6
Under the steady state condition, the spectrum of electrons is investigated by solving the continuity equation under the complex radiation of both the synchrotron and Compton proce…
Discovery of a deep, low mass ratio overcontact binary GSC 03517-00663
D. -F. Guo, K. Li, S. -M. Hu +3
When observing the blazars, we identified a new eclipsing binary GSC 03517-00663. The light curves of GSC 03517-00663 are typical EW-type light curves. Based on the observation usi…
Discovery of a W UMa type binary GSC 03553-00845
D. -F. Guo, K. Li, S. -M. Hu +3
When observing the transiting extrasolar planets, we discovered a new W UMa type binary GSC 03553-00845. Following observation was carried out using the 1m telescope at Weihai Obse…
Sky Brightness at Weihai Observatory of Shandong University
Di-Fu Guo, Shao-Ming Hu, Xu Chen +2
In this paper, a total of about 28000 images in and band obtained on 161 nights using the one-meter optical telescope at Weihai Observatory (WHO) of Shandong University sin…
Optical Monitoring of OT 546 in 2009
Difu Guo, Shaoming Hu, Xu chen
We reported the monitoring results of OT 546 in V, R and I bands, observed on 22 nights from February 16 to July 1 in 2009 at Weihai Observatory of Shandong University. During our…
Optical Monitoring of the Seyfert Galaxy NGC 4151 and Possible Periodicities in the Historical Light Curve
Di-Fu Guo, Shao-Ming Hu, Jun Tao +3
We report B, V, and R band CCD photometry of the Seyfert galaxy NGC 4151 obtained with the 1.0-m telescope at Weihai Observatory of Shandong University and the 1.56-m telescope at…
The photometric system of the One-meter Telescope at Weihai Observatory of Shandong University
Shao-Ming Hu, Sheng-Hao Han, Di-Fu Guo +1
The one-meter telescope at Weihai Observatory of Shandong University is an f/8 Cassegrain telescope. Three sets of filters, including Johnson--Cousins UBVRI, Sloan Digital Sky Surv…
Microvariability Detection of Mrk 421
Xu Chen, ShaoMing Hu, DiFu Guo
The BL Lac object Mrk 421 was observed in optical bands from 2009 April to 2012 May with the 1.0 m telescope at Weihai Observatory of Shandong University. Microvariability was anal…
Variability of OI 090.4
Shao Ming Hu, Xu Chen, Di Fu Guo
OI 090.4 was monitored on 21 nights from 2006 to 2012 for studying the variability. Strong variations occurred during the past 6 years. The long-term variability amplitude is consi…