55 citations · 234 across the 25 of their papers we have counts for
24 papers
Radio and X-ray flux rebrightening six years after outburst in a partially-obscured extreme changing-look AGN
Tianyao Zhou, Xinwen Shu, Lei Yang +14
SDSS J1548+2208 is a unique partially-obscured nuclear transient that exhibits multiwavelength outbursts in mid-infrared, X-ray and radio. We present the results from multiwaveleng…
Tracing Cold Gas in Absorption Across Cosmic Time with the SKA
Elizabeth K. Mahony, Neeraj Gupta, Sergei A. Balashev +12
Observing the 21-cm HI line in absorption provides a powerful means of tracing the cold neutral gas in normal and active galaxies across cosmic time. The frequency coverage and sen…
Dust-obscured radio-emitting tidal disruption event coincident with a high-energy neutrino event
Tianyao Zhou, Xinwen Shu, Guobin Mou +14
Despite the growing number of high-energy neutrinos (TeV-PeV) detected by IceCube, their astrophysical origins remain largely unidentified. Recent observations have linked a few ti…
Investigating the Impacts of AGN Activities on Dwarf Galaxies with FAST HI Observations
Hong-Ying Chen, Chao-Wei Tsai, Pei Zuo +9
We present the results of Hi line observations towards 26 Active Galactic Nuclei (AGN)-hosting and one star-forming dwarf galaxies (Mstar < 10^9.5 Msun) with the 19-beam spectral l…
MeerKAT HI observations of Low Surface Brightness/Ultradiffuse Galaxy Candidates Projected around Two Southern Loose Groups
Chandreyee Sengupta, Tom C. Scott, Hao Chen +9
A large catalogue of low surface brightness galaxies (LSBGs) from the Dark Energy Survey showed significant clustering around nearby galaxy groups and clusters. Using the HIPASS su…
Discovery of a years-delayed radio flare from an unusually slow-evolved tidal disruption event
Zhumao Zhang, Xinwen Shu, Lei Yang +19
SDSS J1115+0544 is a unique low-ionization nuclear emission-line region (LINER) galaxy with energetic ultraviolet (UV), optical and mid-infrared outbursts occurring in its nucleus.…
FAST H I 21 cm study of blueberry galaxies
Yogesh Chandola, Chao-Wei Tsai, D. J. Saikia +3
Green Peas (GPs) and blueberry galaxies (BBs) are thought to be local analogs (0.1) of high redshift Ly emitters. H I study of these can help us understand the star formatio…
Deep extragalactic HI survey of the COSMOS field with FAST
Hengxing Pan, Matt J. Jarvis, Ming Zhu +9
We present a deep HI survey at L-band conducted with the Five-hundred-meter Aperture Spherical radio Telescope (FAST) over the COSMOS field. This survey is strategically designed t…
FAST survey of H I and OH absorption towards extragalactic radio sources
Yogesh Chandola, D. J. Saikia, Yin-Zhe Ma +5
Neutral atomic hydrogen and molecular gas in the host galaxies of radio active galactic nuclei (AGN) can be traced using H I 21-cm and OH-1667 MHz absorption lines to understand th…
H I content of selected mid-infrared bright, starburst blue compact dwarf galaxies
Yogesh Chandola, Di Li, Chao-Wei Tsai +10
We report measurements of H I content in 11 nearby, actively star-forming, blue compact dwarf galaxies (BCDs) from 21 cm observations with the Arecibo telescope. These BCDs, select…
GMRT H I mapping of mid-infrared bright Blue Compact Dwarf Galaxies W1016+3754 & W2326+0608
Yogesh Chandola, Chao-Wei Tsai, Di Li +3
We present the results from deep 21 cm H I mapping of two nearby blue compact dwarf galaxies (BCDGs), W1016+3754 and W2326+0608, using the Giant Metrewave Radio Telescope (GMRT). T…
Does a radio jet drive the massive multi-phase outflow in the ultra-luminous infrared galaxy IRAS 10565+2448?
Renzhi Su, Elizabeth K. Mahony, Minfeng Gu +14
We present new upgraded Giant Metrewave Radio Telescope (uGMRT) HI 21-cm observations of the ultra-luminous infrared galaxy IRAS 10565+2448, previously reported to show blueshifted…
Constraints on dark matter annihilation from the FAST observation of the Coma Berenices dwarf galaxy
Wen-Qing Guo, Yichao Li, Xiaoyuan Huang +4
The Galactic center -ray excess, detected by the Fermi-LAT, is a very attractive tentative signal from dark matter annihilation. Searching for associated synchrotron emissions c…
Searching for axion dark matter with MeerKAT Radio Telescope
Yun-Fan Zhou, Nick Houston, Gyula I. G. Jozsa +11
Axions provide a natural and well-motivated dark matter candidate, with the capability to convert directly to photons in the presence of an electromagnetic field. A particularly co…
HIPASS study of southern ultradiffuse galaxies and low surface brightness galaxies
Yun-Fan Zhou, Chandreyee Sengupta, Yogesh Chandola +4
We present results from an HI counterpart search using the HI Parkes All Sky Survey (HIPASS) for a sample of low surface brightness galaxies (LSBGs) and ultradiffuse galaxies (UDGs…
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…
uGMRT detection of associated HI 21 cm absorption at
J. N. H. S. Aditya, Regina Jorgenson, Vishal Joshi +3
We report a uGMRT detection of HI 21-cm absorption associated with the radio source 8C 0604+728, at . The source is at the highest redshift at which associated HI 21-c…
H I absorption towards radio Active Galactic Nuclei of different accretion modes
Yogesh Chandola, D. J. Saikia, Di Li
We present results of H I absorption experiment done using the Giant Metrewave Radio Telescope (GMRT) towards 27 low- and intermediate-luminosity ( 10…
HI absorption towards low luminosity radio-loud AGNs of different accretion modes and WISE colours
Yogesh Chandola, D. J. Saikia
H{\sc i} absorption studies of active galaxies enable us to probe their circumnuclear regions and the general interstellar medium, and study the supply of gas which may trigger the…
Associated 21-cm absorption towards the cores of radio galaxies
Yogesh Chandola, Neeraj Gupta, D. J. Saikia
We present the results of Giant Metrewave Radio Telescope (GMRT) observations to detect H{\sc i} in absorption towards the cores of a sample of radio galaxies. From observations of…
Associated H{\sc i} absorption towards the core of the radio galaxy 3C 321
Yogesh Chandola, S. K. Sirothia, D. J. Saikia +1
We report the results of Giant Metrewave Radio Telescope (GMRT) observations of H{\sc i} absorption towards the FRII radio galaxy 3C321 (J1531+2404), which is associated with an ac…
HI absorption towards nearby compact radio sources
Yogesh Chandola, S. K. Sirothia, D. J. Saikia
We present the results of HI absorption measurements towards a sample of nearby Compact Steep-Spectrum (CSS) and Giga-Hertz Peaked Spectrum (GPS) radio sources, the CORALZ sample,…
The Discovery of Host Galaxy HI Absorption in CTA 21
C. J. Salter, D. J. Saikia, R. Minchin +2
We report the discovery of HI 21-cm absorption towards the well-studied GHz Peaked-Spectrum source CTA 21 (4C 16.09) using the Arecibo Telescope on 2009 September 20 and 21. Recent…
HI gas in the rejuvenated radio galaxy 4C29.30
Yogesh Chandola, D. J. Saikia, Neeraj Gupta
We report the results of our observations of HI absorption towards the central region of the rejuvenated radio galaxy 4C29.30 (J0840+2949) with the Giant Metrewave Radio Telescope…