30 citations · 203 across the 32 of their papers we have counts for
27 papers · 1 filter
Citizen Science Research with the Square Kilometre Array Observatory (SKAO)
Ananda Hota, Pratik Dabhade, M. J. Hardcastle +8
Over the past two decades, internet-enabled citizen science research (CSR) has contributed to significant discoveries while involving millions of people in the research process. Ou…
RAD@home discovery of a bow-and-arrow radio galaxy tracing a ~560 kpc bow-shock structure in a multi-halo environment
Ananda Hota, Pratik Dabhade, Shubhrangshu Ghosh +9
We report the RAD@home citizen science discovery of a unique bow-and-arrow-shaped radio galaxy (BAARG; RAD J104501.6+352852, z = 0.159) identified in LoTSS DR2. The source exhibits…
Wiggling Through the ICM: Multi-Resolution Radio Imaging of a Tailed Radio Galaxy in MACS J1354.6+7715
Abdul Gani, Roland Timmerman, Leah K. Morabito +4
Tailed radio galaxies are powerful tracers of interactions between active galactic nuclei (AGN) and the intracluster medium (ICM), providing unique insights into cluster dynamics.…
Investigating quenching in Recently Quenched Elliptical galaxies with HI studies
Deepak K. Deo, Daniel H. McIntosh, Sravani Vaddi +4
Recently Quenched Elliptical galaxies (RQEs) represent a critical phase in the transition from star-forming to quiescent galaxies. However, the mechanisms driving their quenching r…
Two Epochs of VLBI Observations of 8 KISSR Seyfert & LINER Galaxies: Suggestions of Fast and Filamentary Outflows
Preeti Kharb, Anderson Caproni, Salmoli Ghosh +4
We present here the results from a second epoch of phase-referenced VLBA observations of 8 Seyfert and LINER galaxies from the KISSR sample. These sources were chosen based on the…
A Deep Chandra View of Abell 2597: Bubbles, Shocks, Cold Fueling, and a Plasma Depletion Layer
Osase Omoruyi, Grant Tremblay, Stefi A. Baum +14
To examine how AGN feedback shapes the intracluster medium (ICM) and fuels black hole accretion in the cool-core galaxy cluster Abell 2597, we present deep (600 ks) Chandra X…
Jet-mode feedback in NGC 5972: insights from resolved MUSE, GMRT and VLA observations
Arshi Ali, Biny Sebastian, Darshan Kakkad +10
NGC 5972, a Voorwerp galaxy, features a helical-shaped extended emission-line region (EELR) with a radius > 10 kpc and a S-shaped radio structure spanning about 470 kpc. We use VLT…
Ten years of searching for relics of AGN jet feedback through RAD@home citizen science
Ananda Hota, Pratik Dabhade, Prasun Machado +15
Understanding the evolution of galaxies cannot exclude the important role played by the central supermassive black hole and the circumgalactic medium (CGM). Simulations have strong…
HI Imaging of a Blueberry Galaxy Suggests a Merger Origin
Saili Dutta, Apurba Bera, Omkar Bait +3
Blueberry galaxies (BBs) are fainter, less massive, and lower redshift counterparts of the Green pea galaxies. They are thought to be the nearest analogues of the high redshift Lym…
Relativistic Jet Motion in the Radio-quiet LINER Galaxy KISSR872
Preeti Kharb, Eric G. Blackman, Eric Clausen-Brown +5
We report superluminal jet motion with an apparent speed of in the radio-quiet (RQ) low ionisation nuclear emission line region (LINER) galaxy, KISSR87…
"Beads on a String" Star Formation Tied to one of the most Powerful AGN Outbursts Observed in a Cool Core Galaxy Cluster
Osase Omoruyi, Grant R. Tremblay, Francoise Combes +19
With two central galaxies engaged in a major merger and a remarkable chain of 19 young stellar superclusters wound around them in projection, the galaxy cluster SDSS J1531+3414 ($z…
The Close AGN Reference Survey (CARS): An interplay between radio jets and AGN radiation in the radio-quiet AGN HE 0040-1105
M. Singha, N. Winkel, S. Vaddi +14
We present a case study of HE 0040-1105, an unobscured radio-quiet AGN at a high accretion rate (Eddington ratio = 0.19+/-0.04). This particular AGN hosts an ionized gas outflow wi…
RAD@home discovery of a one-sided radio jet hitting the companion galaxy
Ananda Hota, Pratik Dabhade, Sravani Vaddi
Minkowski's Object and 'Death Star galaxy' are two of the famous cases of rare instances when a radio jet has been observed to directly hit a neighbouring galaxy. RAD12, the RAD@ho…
RAD@home citizen science discovery of an AGN spewing a large unipolar radio bubble onto its merging companion galaxy
Ananda Hota, Pratik Dabhade, Sravani Vaddi +8
AGN feedback during galaxy merger has been the most favoured model to explain black hole-galaxy co-evolution. However, how the AGN-driven jet/wind/radiation is coupled with the gas…
The Complete Local Volume Groups Sample -- IV. Star formation and gas content in group-dominant galaxies
Konstantinos Kolokythas, Sravani Vaddi, Ewan O'Sullivan +5
Using multi-band data we examine the star formation activity of the nearby group-dominant early-type galaxies of the Complete Local-volume Groups Sample (CLoGS), and the relation b…
Long-term meter wavelength variability study of Blazar J1415+1320 using the Ooty Radio Telescope
Sravani Vaddi, P. K. Manoharan, Anish Roshi
J1415+1320 is a well-studied blazar that exhibits strong flux density variability at a wide range of radio frequencies (2.4 230~GHz). In this letter, we present a variability s…
The Nature of Jets in Double-Peaked Emission Line AGN in the KISSR Sample
P. Kharb, S. Subramanian, M. Das +2
Double-peaked emission line AGN (DPAGN) have been regarded as binary black hole candidates. We present here results from parsec-scale radio observations with the Very Long Baseline…
The Sharpest Ultraviolet view of the star formation in an extreme environment of the nearest Jellyfish Galaxy IC 3418
Ananda Hota, Ashish Devaraj, Ananta C. Pradhan +11
We present the far ultraviolet (FUV) imaging of the nearest Jellyfish or Fireball galaxy IC3418/VCC 1217, in the Virgo cluster of galaxies, using Ultraviolet Imaging Telescope (UVI…
A Multi-wavelength Study of the Dual Nuclei in Mrk 212
K. Rubinur, P. Kharb, M. Das +5
We present radio observations of the galaxy merger remnant Mrk 212 with the Karl G. Jansky Very Large Array (VLA) and the upgraded Giant Meter Radio Telescope (uGMRT). Mrk 212 has…
The Intriguing Parsec-Scale Radio Structure in the "Offset AGN" KISSR 102
P. Kharb, D. Lena, Z. Paragi +4
We report the detection of an intriguing parsec-scale radio source in the "offset AGN" candidate, KISSR 102. The elliptical host galaxy includes two optical nuclei at a projected s…
A VLA-GMRT Look at 11 Powerful FR II Quasars
S. Vaddi, P. Kharb, R. A. Daly +5
We present results from 1.4 and 5 GHz observations at matched resolution with the Karl G. Jansky Very Large Array (VLA) of 11 powerful 3C FR II quasars. We examine the 11 quasars a…
A Curved 150 Parsec Long Jet in the Double-Peaked Emission-Line AGN KISSR 434
Preeti Kharb, Sravani Vaddi, Biny Sebastian +3
Double-peaked emission lines in the narrow- and/or broad-line spectra of AGN have been suggested to arise due to disky broad/narrow line regions, jet-medium interaction, or the pre…
Double-Peaked Emission Lines due to A Radio Outflow in KISSR1219
P. Kharb, S. Subramanian, S. Vaddi +2
We present the results from 1.5 and 5 GHz phase-referenced VLBA and 1.5 GHz Karl G. Jansky Very Large Array (VLA) observations of the Seyfert 2 galaxy KISSR1219, which exhibits dou…
Tracking galaxy evolution through low frequency radio continuum observations using SKA and Citizen-science Research using Multi-wavelength data
Ananda Hota, Chiranjib Konar, C. S. Stalin +6
We present a review on galaxy black hole co-evolution through merger, star formation and AGN-jet feedback. We highlight results on transitional galaxies (e.g. NGC1482, NGC6764, NGC…