354 citations · 776 across the 32 of their papers we have counts for
33 papers
Anomalously high deuterium fractionation in a galactic translucent cloud: a challenge to chemical models
Gan Luo, Zhi-Yu Zhang, Thomas G. Bisbas +8
Deuterated (D-) species have long been proposed to diagnose the physical conditions and chemical evolution of cold dense molecular clouds. While deuterium fractionation has been ex…
A HINSA view of cosmic-ray ionization in IC 348 and NGC 1333: evidence for a strong low-energy cosmic-ray disparity
Gan Luo, Marco Padovani, Daniele Galli +5
The cosmic-ray ionization rate (CRIR) is one of the fundamental parameters influencing the chemical and dynamical evolution of molecular clouds. Although observations in recent yea…
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…
Insights into the Physical Nature of Polar Ring Galaxies from H I Observations
Niankun Yu, Han Zheng, Chao-Wei Tsai +10
Polar ring galaxies (PRGs) host an outer ring of gas and stars oriented nearly perpendicular to the main stellar body. They represent extreme examples of misaligned systems and pro…
A stringent constraint on the fractional change of proton g-factor
Renzhi Su, Stephen J. Curran, Jeremy Darling +5
We report a constraint on the cosmological variation of the proton g-factor, . By comparing the measured redshifts between \mbox{H\,{\sc i}} 21 cm and OH 18 cm lines observed…
The evolution of CH in Planck Galactic Cold Clumps
Gan Luo, Arshia M. Jacob, Marco Padovani +6
Methylidyne (CH) has long been considered a reliable tracer of molecular gas in the low-to-intermediate extinction range. Although extended CH 3.3 GHz emission is commonly observed…
Physical Properties and HI-to-H2 Transition Across Taurus Linear Edge
Ningyu Tang, Feihang Miao, Gan Luo +5
Studying the atomic-to-molecular transition is essential for understanding the evolution of interstellar medium. The linear edge of Taurus molecular cloud, clearly identified in th…
Tiny-Scale Properties within the Interstellar Medium towards PSR J16444559: I. Observational Evidence of Turbulence-induced Tiny Scale Atomic Structures
Mengting Liu, Di Li, J. R. Dawson +21
We investigated HI absorption toward a single pulsar, PSR J16444559, and its variability over timescales from days to years, using Murriyang, CSIRO's Parkes Radio Telescope. Our…
First Search for Pulsed CH Maser Emission Stimulated by a Pulsar
Mengting Liu, Di Li, J. R. Dawson +6
We present the first search for pulsed CH maser emission potentially stimulated by PSR J16444559, conducted using the ultra-wide-bandwidth low-frequency receiver on Murriyang, C…
A new measurement of the Galactic C/C gradient from sensitive HCO absorption observations
Gan Luo, Laura Colzi, Tie Liu +4
We present a new constraint on the Galactic C/C gradient with sensitive HCO absorption observations against strong continuum sources. The new measurements suffer…
The CO-dark molecular gas in the cold HI arc
Gan Luo, Di Li, Zhi-yu Zhang +6
The CO-dark molecular gas (DMG), which refers to the molecular gas not traced by CO emission, is crucial for the evolution of the interstellar medium (ISM). While the gas propertie…
Opacities of dense gas tracers in galactic massive star-forming regions
Shu Liu, Junzhi Wang, Fei Li +5
Optical depths of dense molecular gas are commonly used in Galactic and extragalactic studies to constrain the dense gas mass of the clouds or galaxies. The optical depths are ofte…
FAST discovery of a fast neutral hydrogen outflow
Renzhi Su, Minfeng Gu, S. J. Curran +9
In this letter, we report the discovery of a fast neutral hydrogen outflow in SDSS J145239.38+062738.0, a merging radio galaxy containing an optical type I active galactic nuclei (…
Abundance ratios of OH/CO and HCO+/CO as probes of the cosmic ray ionization rate in diffuse clouds
Gan Luo, Zhiyu Zhang, Thomas G. Bisbas +6
The cosmic-ray ionization rate (CRIR, ) is one of the key parameters controlling the formation and destruction of various molecules in molecular clouds. However, the current m…
Dependence of Chemical Abundance on the Cosmic Ray Ionization Rate in IC 348
Gan Luo, Zhi-Yu Zhang, Thomas G. Bisbas +8
Ions (e.g., H, HO) have been used extensively to quantify the cosmic-ray ionization rate (CRIR) in diffuse sightlines. However, measurements of CRIR in low-to-interme…
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…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- VIII. A search for hot cores by using CHCN, CHOCHO and CHOH lines
Sheng-Li Qin, Tie Liu, Xunchuan Liu +29
Hot cores characterized by rich lines of complex organic molecules are considered as ideal sites for investigating the physical and chemical environments of massive star formation.…
A FAST Survey of HINSA in PGCCs Guided by HC3N
Xunchuan Liu, Yuefang Wu, Chao Zhang +11
Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we search for HI narrow-line self-absorption (HINSA) features in twelve Planck Galactic cold clumps (PGCCs),…
Precise Measurements of CH Maser Emission and Its Abundance in Translucent Clouds
Ningyu Tang, Di Li, Gan Luo +5
We present high-sensitivity CH 9 cm ON/OFF observations toward 18 extra-galactic continuum sources that have been detected with OH 18 cm absorption in the Millennium survey with th…
OH Evolution in Molecular Clouds
Ningyu Tang, Di Li, Nannan Yue +7
We have conducted OH 18 cm survey toward 141 molecular clouds in various environments, including 33 optical dark clouds, 98 Planck Galactic cold clumps (PGCCs) and 10 Spitzer dark…
A pilot search for extragalactic OH absorption with FAST
Zheng Zheng, Di Li, Elaine M. Sadler +2
OH absorption is currently the only viable way to detect OH molecules in non-masing galaxies at cosmological distances. There have been only 6 such detections at z>0.05 to date and…
A Fast Radio Burst discovered in FAST drift scan survey
Weiwei Zhu, Di Li, Rui Luo +67
We report the discovery of a highly dispersed fast radio burst, FRB~181123, from an analysis of 1500~hr of drift-scan survey data taken using the Five-hundred-meter Aperture…
The Fundamental Performance of FAST with 19-beam Receiver at L Band
Peng Jiang, Ning-Yu Tang, Li-Gang Hou +18
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) passed national acceptance and is taking pilot cycle of 'Shared-Risk' observations. The 19-beam receiver covering 1…
Revealing The CO X-factor In Dark Molecular Gas through Sensitive ALMA Absorption Observations
Gan Luo, Di Li, Ningyu Tang +11
Carbon-bearing molecules, particularly CO, have been widely used as tracers of molecular gas in the interstellar medium (ISM). In this work, we aim to study the properties of molec…