Publications (12)
JWST resolves jet-driven H2 and ionized outflows in radio galaxy 3C305
B. Sebastian, P. M. Ogle, P. Guillard +17
We present JWST MIRI MRS, NIRSpec, NIRCam, and MIRI imaging observations of 3C 305, a radio galaxy with a compact jet that is confined within the galaxy. We use the H2 0-0 S(1)-S(7…
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…
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…
Rotation and flipping invariant self-organizing maps with astronomical images: A cookbook and application to the VLA Sky Survey QuickLook images
A. N. Vantyghem, T. J. Galvin, B. Sebastian +12
Modern wide field radio surveys typically detect millions of objects. Techniques based on machine learning are proving to be useful for classifying large numbers of objects. The se…
Magnetic field in the Lobes of the Seyfert Galaxy NGC3516: Suggestions of a Helical field
Salmoli Ghosh, P. Kharb, E. Sajjanhar +2
We present polarization images from the Karl G. Jansky Very Large Array (VLA) and the Giant {Metrewave} Radio Telescope (GMRT) at 5.5, 10 GHz and 663 MHz of the changing-look (CL)…
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…
Shocked, Heated, and Now Resolved: H excitation in the low-luminosity AGN at M58 core with JWST
I. E. López, E. Bertola, V. Reynaldi +11
We present JWST NIRSpec and MIRI MRS observations of the central kiloparsec of M58 (NGC 4579), a nearby LINER galaxy hosting a low-luminosity AGN (LLAGN; $L_\mathrm{bol} \sim 10^{4…
Magnetic Field Structures In and Around Seyfert Galaxy Outflows
Salmoli Ghosh, P. Kharb, B. Sebastian +5
We present radio polarimetric images of 12 Seyfert and Low-Ionization Nuclear Emission-line Region (LINER) galaxies belonging to the Centre for Astrophysics (CfA)+12 micron sample…
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…
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…
Non-thermal emission from massive star forming regions: A possible SNR candidate G351.7-1.2?
V. S. Veena, S. Vig, B. Sebastian +3
We present low frequency wide band observations (300-500 MHz) of the star forming complex G351.7-1.2 using upgraded Giant Metrewave Radio Telescope (uGMRT), India. Combining this w…