output
20082026
most citedExtreme Coronal Line Emitters: Tidal Disruption of Stars by Massive Black Holes in Galactic Nuclei?

129 citations

112 papers

astro-ph.GA2026

First Submillimeter Lights from Dome A: Tracing the Carbon Cycle in the Feedback of Massive Stars

Yan Gong, Jiaqiang Zhong, Yuan Ren +38

The cycling of carbon between its ionized, atomic, and molecular phases shapes the chemical compositions and physical conditions of the interstellar medium (ISM). However, ground-b…

cs.LG2025★ 10 cited

Seasonal Forecasting of Pan-Arctic Sea Ice with State Space Model

Wei Wang, Weidong Yang, Lei Wang +2

The rapid decline of Arctic sea ice resulting from anthropogenic climate change poses significant risks to indigenous communities, ecosystems, and the global climate system. This s…

astro-ph.HE2024★ 21 cited

Einstein Probe discovery of EP240408a: a peculiar X-ray transient with an intermediate timescale

Wenda Zhang, Weimin Yuan, Zhixing Ling +136

We report the discovery of a peculiar X-ray transient, EP240408a, by Einstein Probe (EP) and follow-up studies made with EP, Swift, NICER, GROND, ATCA and other ground-based multi-…

astro-ph.GA2024★ 1 cited

A comparative study of ultraluminous infrared galaxies in the IRAS and SDSS Surveys

Shaohua Zhang, Zhijian Luo, Xiheng Shi +3

We present a comprehensive study of Ultraluminous Infrared Galaxies (ULIRGs), leveraging data from the IRAS Faint Source Catalogue (FSC) and the spectroscopic catalog in the Sloan…

astro-ph.HE2023★ 23 cited

Intra-night optical flux and polarization variability of BL~Lacertae during its 2020 2021 high state

Rumen Bachev, Tushar Tripathi, Alok C. Gupta +15

In this work, we report the presence of rapid intra-night optical variations in both -- flux and polarization of the blazar BL Lacertae during its unprecedented 2020--2021 high sta…

astro-ph.SR2023★ 5 cited

Data Release of the AST3-2 Automatic Survey from Dome A, Antarctica

Xu Yang, Yi Hu, Zhaohui Shang +18

AST3-2 is the second of the three Antarctic Survey Telescopes, aimed at wide-field time-domain optical astronomy. It is located at Dome A, Antarctica, which is by many measures the…

astro-ph.HE2022★ 11 cited

Optical flux and spectral variability of BL Lacertae during its historical high outburst in 2020

Nibedita Kalita, Yuhai Yuan, Minfeng Gu +9

BL Lacertae had undergone a series of historical high flux activity over a year, from August 2020 in the optical to VHE -rays. In this paper, we report on optical flux and spect…

astro-ph.GA2022★ 2 cited

On the Origin of the Strong Optical Variability of Emission-line Galaxies

Ruqiu Lin, Zhen-Ya Zheng, Weida Hu +9

Emission-line galaxies (ELGs) are crucial in understanding the formation and evolution of galaxies, while little is known about their variability. Here we report the study on the o…

astro-ph.GA2022★ 5 cited

Compact and variable radio emission from an active galaxy with supersoft X-ray emission

Lei Yang, Xinwen Shu, Fabao Zhang +15

RX J1301.9+2747 is a unique active galaxy with supersoft X-ray spectrum that lacks significant emission at energies above 2 keV. In addition, it is one of few galaxies displaying q…

astro-ph.GA2022★ 2 cited

Broad Emission and Absorption Line Outflows in the Quasar SDSS J163345.22+512748.4

Bo Liu, Hongyan Zhou, Xinwen Shu +4

We present a detailed study of the optical and NIR emission and absorption line spectrum of the quasar SDSS J163345.22+512748.4. We discovered on the newly acquired NIR spectrum a…

astro-ph.GA2022★ 4 cited

The 2175 Å~ Bump Features in FeLoBAL Quasars: One Indicator of MW-like Dust in the Nuclear Region of Quasar

Shaohua Zhang, Jian Ge, Tuo Ji +8

To investigate the properties of dust in the nuclear region of quasars, we explored the extinction curves of the iron low-ionization broad absorption line (FeLoBAL) quasar SDSS J16…

astro-ph.GA2022★ 21 cited

Feeding the Accretion Disk from the Dusty Torus in a Reddened Quasar

Ge Li, Xiheng Shi, Qiguo Tian +4

We present here a detailed analysis of an unusual absorption line system in the quasar SDSS J122826.79+100532.2. The absorption lines in the system have a common redshifted velocit…

astro-ph.GA2021★ 29 cited

Mid-InfraRed Outbursts in Nearby Galaxies (MIRONG). II. Optical Spectroscopic Follow-up

Yibo Wang, Ning Jiang, Tinggui Wang +8

Infrared echo has proven to be an effective means to discover transient accretion events of supermassive black holes (SMBHs), such as tidal disruption events (TDEs) and changing-lo…

astro-ph.GA2021★ 54 cited

Evidence of a tidal disruption event in GSN 069 from the abnormal carbon and nitrogen abundance ratio

Zhenfeng Sheng, Tinggui Wang, Gary Ferland +4

GSN 069 is an ultra-soft X-ray active galactic nucleus that previously exhibited a huge X-ray outburst and a subsequent long-term decay. It has recently presented X-ray quasi-perio…

physics.space-ph2021★ 16 cited

MMS direct observations of kinetic-scale shock self-reformation

Zhongwei Yang, Ying D. Liu, Andreas Johlander +6

Studies of shocks have long suggested that a shock can undergo cyclically self-reformation in a time scale of ion cyclotron period. This process has been proposed as a primary mech…

astro-ph.GA2021★ 4 cited

B2 0003+38A: a classical flat-spectrum radio quasar hosted by a rotation-dominated galaxy with a peculiar massive outflow

Qinyuan Zhao, Luming Sun, Lu Shen +3

We present a detailed analysis of the single-slit optical spectrum of the Flat-Spectrum Radio Quasar (FSRQ) B2 0003+38A, taken by the Echellette Spectrograph and Imager (ESI) on th…

astro-ph.GA2021★ 13 cited

Mrk 1239: a Type-2 Counterpart of Narrow-line Seyfert-1?

Xiang Pan, Hongyan Zhou, Chenwei Yang +10

We present new spectrophotometric and spectropolarimetric observations of Mrk 1239, one of the 8 prototypes that defines type-1 narrow-line Seyfert galaxies (NLS1s). Unlike the oth…

astro-ph.GA2020★ 80 cited

Mid-InfraRed Outburst in Nearby Galaxies (MIRONG) I: Sample Selection and Characterization

Ning Jiang, Tinggui Wang, Liming Dou +9

The optical time-domain astronomy has grown rapidly in the past decade but the dynamic infrared sky is rarely explored. Aiming to construct a sample of mid-infrared outburst in nea…

astro-ph.GA2020★ 3 cited

A Broad Absorption Line Outflow Associated with the Broad Emission Line Region in the Quasar SDSS J075133.35+134548.3

Bo Liu, Hongyan Zhou, Xinwen Shu +4

We report the discovery of unusual broad absorption lines (BALs) in the bright quasar SDSS J075133.35+134548.3 at z~1, and present a detailed study of BAL and emission lines using…

astro-ph.IM2020★ 93 cited

Night-time measurements of astronomical seeing at Dome A in Antarctica

Bin Ma, Zhaohui Shang, Yi Hu +6

Seeing, the angular size of stellar images blurred by atmospheric turbulence, is a critical parameter used to assess the quality of astronomical sites. Median values at the best mi…

astro-ph.GA2020★ 11 cited

A Mid-infrared Flare in the Active Galaxy MCG-02-04-026: Dust Echo of a Nuclear Transient Event

Luming Sun, Ning Jiang, Tinggui Wang +8

We report the discovery of a mid-infrared (MIR) flare using WISE data in the center of the nearby Seyfert 1.9 galaxy MCG-02-04-026. The MIR flare began in the first half of 2014, p…

astro-ph.HE2020★ 11 cited

Compact Radio Emission from Nearby Galaxies with Mid-infrared Nuclear Outbursts

B. B. Dai, X. W. Shu, N. Jiang +5

We present 5.5 GHz observations with the VLA of a sample of nearby galaxies with energetic nuclear outbursts at mid-infrared (MIR) bands. These observations reach a uniform depth d…

astro-ph.GA2020★ 2 cited

Ultradense Gases beyond Dusty Torus in a Partially Obscured Quasar

Zhenzhen Li, Hongyan Zhou, Lei Hao +1

The co-evolution between black holes and galaxies suggests that feedback of active galactic nuclei influence host galaxies through ejecting radiative and kinetic energies to surrou…

astro-ph.HE2020★ 19 cited

Multiwavelength Study of an X-ray Tidal Disruption Event Candidate in NGC 5092

Dongyue Li, R. D. Saxton, Weimin Yuan +7

We present multiwavelength studies of a transient X-ray source, XMMSL1 J131952.3+225958, associated with the galaxy NGC 5092 at detected in the XMM-Newton SLew survey (XM…