supported by the Guangxi Natural Science Foundation(No.2021GXNSFBA220044);the National Natural Science Foundation of China(No.11903002);the Research Project of Baise University(No.2019KN04)。
We investigate the relationship between the variability of broad absorption lines(BALs)or narrow absorption lines(NALs)and that of continuum using a data set of two-epoch SDSS spectra containing 134 C IV NAL-BAL pairs...
financial supports from the Science Foundation of Department of Education of Yunnan Province (2024J0935)。
A possible quasi-periodic oscillation(QPO) at frequency 7.045 × 10^(-5) Hz is found in the narrow-line Seyfert 1galaxy Mrk 142 in the data of XMM-Newton collected on 2020 April 11.We find that the QPO signal is stati...
J.S.W.acknowledges the support from the Alexander von Humboldt Foundation;X.L.is supported by NSERC,funding reference#CITA 490888–16;the Jeffrey L.Bishop Fellowship;Research at Perimeter Institute is supported in part by the Government of Canada through the Department of Innovation,Science and Economic Development Canada;the Province of Ontario through the Ministry of Colleges and Universities;Z.G.D.is supported by the National Key Research and Development Program of China(Grant No.2017YFA0402600);the National SKA Program of China(Grant No.2020SKA0120300);the National Natural Science Foundation of China(Grant No.11833003);X.F.W.is supported by the National Natural Science Foundation of China(Grant Nos.11725314,12041306);the National SKA Program of China(2022SKA0130101)。
Quasi-periodic oscillation(QPO)signals are discovered in some fast radio bursts(FRBs)such as FRB 20191221A,as well as in the X-ray burst associated with the galactic FRB from SGR 1935+2154.We revisit the intermediatef...
supported from the research project of Qujing Normal University (Grant No. 2105098001/094);supported by the youth of Yunnan Provincial Science and Technology Department (Grant Nos. 202101AU070146 and 2103010006);supported by the National Natural Science Foundation of China (NSFC, Grant Nos.11733001, 11733002 and 11773013);supported by the National Key Research and Development Program of China (Grant No. 2017YFA0402703);financial support from the National Natural Science Foundation of China (NSFC, Grant No. 12103022);the Special Basic Cooperative Research Programs of Yunnan Provincial Undergraduate Universities Association (No.202101BA070001-043)。
We use a large sample of gamma-ray narrow-line Seyfert 1 galaxies(γ-NLS1 s) to study the jet formation mechanisms. We find that the jet power of γ-NLS1 s is lower than the maximum jet power of the Blandford–Payne(B...
the kind support of Starting Research Fund of Nanjing Normal University;the kind support of NSFC-12173020;the kind support of Da Chuang project of Nanjing Normal University for undergraduate students。
In this paper,we discuss properties of SDSS J1042-0018 which is a broad line active galactic nucleus(AGN)but misclassified as an H II galaxy in the BPT diagram(SDSS J1042-0018 is called a misclassified broad line AGN)...
funded by the the Fundamental Research Funds for the Universities in Hebei Province (No:JYQ202003)。
By means of the data sets from the Pan-STARRS1 survey, we have systematically examined the relationship between the variability characteristics and the physical parameters of the largest NLS1 galaxy sample up to now.T...
funded by ESA Member States and NASA;support from the China Scholarship Council (CSC, Grant 2016GXZR89);supported by the Chinese Academy of Sciences (CAS) President’s International Fellowship Initiative (PIFI, Grant 2016VMB073);supported by the National Natural Science Foundation of China (Grant Nos. 11873073, 11473054 and U1531245);by the Science and Technology Commission of Shanghai Municipality (14ZR 1447100)
We present and analyze the variability of three Seyfert galaxies on intra-day timescales. We have analyzed in a uniform manner the 38 longest(> 30 ks) observations made for NGC 4051, MCG-06–30–15 and NGC 4151 by XMM...
provided by the National Key Program for Science and Technology Research and Development (Grant 2016YFA0400701);the Key Research Program of the CAS (Grant No. KJZD-EW-M06);the National Natural Science Foundation of China (NSFC, Grant Nos. 11133006, 11433004 and 11303085);the Western Light Youth Project;support from Chinese Western Young Scholars Program;‘Light of West China’ Program provided by CAS
1H 0323+342 is a γ-ray-loud narrow-line Seyfert 1 galaxy(NLS1). The variability mechanism of γ-ray-loud NLS1 s remains unclear. We have observed 1H 0323+342 photometrically from 2006 to2010 with a total of 41 ni...
financial support from CSIR, New Delhi;financial support from DST, New Delhi through the INSPIRE Scheme
We performed time resolved spectroscopy of 1H0707-495 and IRAS 13224-3809 using long XMM-Newton observations. These are strongly variable narrow line Seyfert 1 galaxies and show broad features around 1 keV that have b...
supported by the National Basic Research Program of China (973 Program) (grant 2014CB845800);the National Natural Science Foundation of China (grants 11573034, 11533003, 11373036 and 11133002);the Strategic Priority Research Program “The Emergence of Cosmological Structures” of the Chinese Academy of Sciences (grant XDB09000000);the Guangxi Science Foundation (2013GXNSFFA019001)
By modeling the broadband spectral energy distributions (SEDs) of a typical flat spectrum radio quasar (FSRQ, 3C 279) and two GeV narrow-line Seyfert 1 galaxies (NLSls, PMN J0948+0022 and 1H 0323+342) in diffe...