31 citations · 284 across the 20 of their papers we have counts for
20 papers
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…
The JWST View of Cygnus A: Jet-Driven Coronal Outflow with a Twist
Patrick M. Ogle, B. Sebastian, A. Aravindan +29
We present first results from James Webb Space Telescope (JWST) Near-Infrared Spectrograph (NIRSpec), Mid-Infrared Instrument (MIRI), and Keck Cosmic Webb Imager (KCWI) integral fi…
AGN Feedback Through Multiple Jet Cycles in the Seyfert Galaxy NGC 2639
Vaishnav V. Rao, Preeti Kharb, Rubinur K. +7
The Seyfert galaxy NGC 2639 was known to exhibit three episodes of AGN jet/lobe activity. We present here the upgraded Giant Metrewave Radio Telescope (uGMRT) 735 MHz image of NGC…
The structure at the centre of the giant radio galaxy GRS J0844+4627: a compact symmetric object?
A. Marecki, B. Sebastian, C. H. Ishwara-Chandra
We observed the core region of the giant radio galaxy GRS J0844+4627 with e-MERLIN at 1.52 and 5.07 GHz. These observations revealed that the apparent single feature at the centre…
Investigating the origin of X-ray jets: A case study of four hybrid morphology MOJAVE blazars
Biny Sebastian, Preeti Kharb, Matthew L. Lister +3
We have carried out Chandra, HST, and VLA observations of four MOJAVE blazars that have been previously classified as 'hybrid' (FR I/II) blazars in terms of radio morphology but no…
The contribution of non-central radio galaxies to AGN feedback in rich galaxy clusters
Ruchika Seth, Ewan O'Sullivan, Biny Sebastian +3
We present a combined radio/X-ray study of six massive galaxy clusters, aimed at determining the potential for heating of the intra-cluster medium (ICM) by non-central radio galaxi…
A Polarization Study of 3 Blazars using the uGMRT at ~600 MHz
Janhavi Baghel, Silpa S., P. Kharb +2
We present results from our radio polarimetric study with the upgraded Giant Metrewave Radio Telescope (uGMRT) at Band 4 (550-850 MHz) of 3 blazars: radio-loud quasars 3C390.3, 4C7…
AGN Jets and Winds in Polarised Light: The Case of Mrk 231
Silpa S., P. Kharb, C. P. O' Dea +4
We present the results of a multi-frequency, multi-scale radio polarimetric study with the Very Large Array (VLA) of the Seyfert 1 galaxy and BALQSO, Mrk 231. We detect complex tot…
Outflows in the Radio-Intermediate Quasar III Zw 2: A Polarization Study with the EVLA & uGMRT
Silpa S., P. Kharb, C. M. Harrison +4
We present results from a polarization study of the radio-intermediate quasar, III Zw 2, at a redshift of 0.089, with the upgraded Giant Metrewave Radio Telescope (uGMRT) at 685 MH…
A detailed study of X-ray cavities in the intracluster environment of the cool core cluster Abell 3017
M. B. Pandge, Biny Sebastian, Ruchika Seth +1
We present a detailed analysis of a cool-core galaxy cluster Abell 3017, at a redshift of z=0.219, which has been identified to be merging with its companion cluster Abell 3016. Th…
Double-peaked Lines, Dual VLBI Components, and Precessing Jets in J1328+2751
S. Nandi, A. Caproni, P. Kharb +2
In this work, we report a radio galaxy with precessing jets, double-peaked emission lines and the presence of two compact radio components with a projected separation of ~6 parsec…
A Radio Polarimetric Study to Disentangle AGN Activity and Star-Formation in Seyfert Galaxies
Biny Sebastian, P. Kharb, C. P. O' Dea +2
To understand the origin of radio emission in radio-quiet AGN and differentiate between the contributions from star formation, AGN accretion, and jets, we have observed a nearby sa…
Understanding the Origin of Radio Outflows in Seyfert Galaxies using Radio Polarimetry
Biny Sebastian, P. Kharb, C. P. O' Dea +3
The role of starburst winds versus active galactic nuclei (AGN) jets/winds in the formation of the kiloparsec scale radio emission seen in Seyferts is not yet well understood. In o…
The Discovery of Secondary Lobes in the Seyfert Galaxy NGC 2639
Biny Sebastian, P. Kharb, C. P. O`Dea +2
We report the discovery of a secondary pair of radio lobes in the Seyfert galaxy NGC 2639 with polarization-sensitive observations with the Karl G. Jansky Very Large Array (VLA). T…
Radio continuum emission from local analogs of high-z faint LAEs: Blueberry galaxies
Biny Sebastian, Omkar Bait
We present a radio continuum study of a population of extremely young and starburst galaxies, termed as blueberries at 1 GHz using the upgraded Giant Metrewave Radio Teles…
The filamentary radio lobes of the Seyfert-Starburst composite galaxy NGC3079
Biny Sebastian, Preeti Kharb, C. P. O Dea +2
We present results from multi-frequency polarization-sensitive Very Large Array observations of the Seyfert-starburst composite galaxy NGC3079. Our sensitive radio observations rev…
GMRT Low-frequency Imaging of an Extended Sample of X-shaped Radio Galaxies
Dharam V. Lal, Biny Sebastian, C. C. Cheung +1
We present a low-frequency imaging study of an extended sample of X-shaped radio sources using the Giant Metrewave radio telescope (GMRT) at two frequencies (610 and 240 MHz). The…
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…
Discovery of a new, 2.2 Mpc Giant Radio Galaxy at a redshift of 0.57
Biny Sebastian, C. H. Ishwara-Chandra, Ravi Joshi +1
We report the discovery of one of the largest and most distant Giant Radio Galaxy (GRG) in the Lynx field which was discovered using deep Giant Metre-wave Radio Telescope (GMRT) 15…
Giant Metrewave Radio Telescope Observations of Head-Tail Radio Galaxies
Biny Sebastian, Dharam V. Lal, A. Pramesh Rao
We present results from a study of seven large known head-tail radio galaxies based on observations using the Giant Metrewave Radio Telescope at 240 and 610 MHz. These observations…