11 papers
Possible High-Energy Neutrino Emission from Dark Matter Annihilation in the Disrupting Dwarf Galaxy Boötes~III
Shunhao Ji, Zhongxiang Wang
We report the first search for high-energy neutrino emissions from dark matter (DM) annihilation in stellar-stream cores. Motivated by a recent gamma-ray study that proposed these…
High-energy neutrino emission from the Type~IIn supernova SN~2017hcd
Shunhao Ji, Zhongxiang Wang, Litao Zhu +1
Neutrino astronomy provides another window to exploring the Universe, exemplified by the detection of a megaelectronvolt neutrino burst from the core-collapse supernova (CCSN) SN~1…
An extragalactic gamma-ray binary formed in supernova 2022jli
Pengfei Zhang, Zhongxiang Wang, Shunhao Ji
On May 5 2022, a type Ic supernova (SN) explosion SN~2022jli was discovered. This SN showed additional optical emissions, which were found to exhibit 12.4-day periodic undulations…
AT2022sxl: A Candidate Repeating Tidal Disruption Event in Possible Association with Two High-Energy Neutrino Events
Shunhao Ji, Zhongxiang Wang, Litao Zhu +2
We report a candidate repeating tidal disruption event (TDE), AT2022sxl, found from large-field optical survey data. Two flares with a separation time of 7.2\,yr between the…
Possible Neutrino Emission from the Pulsar Wind Nebula G63.7+1.1
Shunhao Ji, Zhongxiang Wang, Dong Zheng +1
We report on our finding of an excess of neutrinos at the location of the pulsar wind nebula (PWN) G63.7+1.1. By analyzing the IceCube track-like neutrino data for…
Testing Colour-magnitude Pattern as A Method in the Search for Changing-Look AGNs
Li-tao Zhu, Zhongxiang Wang, P. U. Devanand +6
We develop a simple method to search for changing-look (CL) active galactic nucleus (AGN) candidates, and conduct a test run. In this method, optical variations of AGNs are monitor…
PKS~2332017 and PMN J19161519: Candidate Blazar Counterparts to Two High-energy Neutrino Events
Shunhao Ji, Zhongxiang Wang, Dong Zheng
We report our counterpart identification study for two high-energy neutrino events IC-130127A and IC-131204A listed in the IceCube Event Catalog of Alert Tracks. These two events b…
PKS 2254+074: A Blazar in Likely Association with the Neutrino Event IceCube-190619A
Shunhao Ji, Zhongxiang Wang
We report our study of the field of a 0.2 PeV neutrino event IC-190619A. This neutrino belongs to Gold events, which more likely have an astrophysical origin. Among the two…
Fermi Blazars in the Zwicky Transient Facility Survey: Properties of Large Optical Variations
Si-Si Sun, Zhongxiang Wang, Shun-hao Ji
We analyze the optical light-curve data, obtained with the Zwicky Transient Facility (ZTF) survey, for 47 gamma-ray blazars monitored by the Large Area Telescope onboard {\it the F…
Identifying Three New AGNs Among Fermi Unidentified Gigaelectronvolt Sources
Shunhao Ji, Zhongxiang Wang, Qiangmeng Huang +1
We report our identification of three gigaelectronvolt -ray sources, 4FGL J0502.6+0036, 4FGL J1055.9+6507, and 4FGL J1708.2+5519, as Active Galactic Nuclei (AGNs). They are list…
Dissecting the gamma-ray emissions of the nearby galaxies NGC 1068 and NGC 253
Shunhao Ji, Zhongxiang Wang, Yi Xing +2
Intrigued by recent high-energy study results for nearby galaxies with gamma-ray emission and in particular NGC~1068 that has been detected as a neutrino-emitting source by the Ice…