5 papers
AT2019ijn: a fast-rising, slow-decaying blue optical transient with exceptionally bright radio emission
Hucheng Ding, Xinwen Shu, Luming Sun +9
We report the discovery of a peculiar optical transient, AT2019ijn, occurred in the nuclear region of a dwarf galaxy at z=0.273. It rises rapidly to peak at a luminosity of Mg=-21.…
Double tidal disruption events or repeating partial tidal disruption events in AT 2020vdq
Zhang XueGuang
AT 2020vdq has been known as a candidate of repeating partial tidal disruption events (pTDEs), due to its two flares with a time interval of 1000 days. Here, a simplified met…
Different dependence of narrow H line luminosity on optical continuum luminosity between starforming galaxies and Type-2 AGN: globally negative AGN feedback in local Type-2 AGN?
XueGuang Zhang
In this manuscript, clues are provided to support globally negative AGN feedback on star formation in the host galaxies of the local low-redshift SDSS Type-2 AGN, based on the diff…
Delayed and fast rising radio flares from an optical and X-ray detected tidal disruption event in the center of a dwarf galaxy
Fabao Zhang, Xinwen Shu, Lei Yang +7
AT2018cqh is a unique tidal disruption event (TDE) candidate discovered in a dwarf galaxy. Both the light curve fitting and galaxy scaling relationships suggest a central black hol…
Are there higher electron densities in narrow emission line regions of Type-1 AGN than Type-2 AGN?
Zhang XueGuang
In the manuscript, we check properties of electron densities traced by flux ratio of [S~{\sc ii}]Å~ to [S~{\sc ii}]Å~ in narrow emission l…