15 papers
Spatially resolved thermal dust emission in the L1157 outflow reveals grain-driven molecular enrichment
Siyi Feng, Hauyu Baobab Liu, Yang Lu +11
Protostellar outflow shocks reshape local dust properties and molecular chemistry. The L1157 outflow is an archetypal chemically rich shocked region, but the thermal dust associate…
Star Formation Drives Production of Low Energy Cosmic Rays
Ningyu Tang, Jiahao Liu, Di Li +18
For over a century, the origin of low-energy cosmic rays (LECRs), the dominant heaters and ionizers of dense interstellar gas, remains elusive owing to solar modulation and uncerta…
Constraining the nature of active galactic nuclei through circumgalactic Lya emission at z=2-3
Shiwu Zhang, Zheng Cai, Fabrizio Arrigoni Battaia +8
We present a comprehensive analysis of circumgalactic Lya nebulae around 59 unobscured and 26 obscured quasars at z=2-3, observed with the Keck Cosmic Web Imager (KCWI), to constra…
SwinYNet: A Transformer-based Multi-Task Model for Accurate and Efficient FRB Search
Yunchuan Chen, Shulei Ni, Chan Li +11
In this study, we present a transformer-based multi-task model for Fast Radio Burst (FRB) detection, signal segmentation, and parameter estimation directly from time-frequency data…
Large scale mapping of [CI] and the [CI]-to-CO transition in Ophiuchus molecular cloud
Jifeng Xia, Ningyu Tang, Thomas G. Bisbas +10
Atomic carbon ([CI]) is a key species in the carbon chemistry of the interstellar medium (ISM). Using the Submillimeter Wave Astronomy Satellite (SWAS), we conducted a [CI](P$_…
Testing the AGN unified model with simulated emission lines from the circumgalactic medium (CGM)
Shiwu Zhang, Zheng Cai, Aura Obreja +5
The CGM around unobscured AGN has received much attention in recent years. Comparatively, nebulae associated with obscured AGN are less studied. Here, we simulate the Ly, H…