51 citations · 495 across the 30 of their papers we have counts for
24 papers · 1 filter
SuperMIGHTEE : Spectral Ages of Remnant Radio Galaxy Candidates in the XMM-LSS Field
Sushant Dutta, Veeresh Singh, C. H. Ishwara Chandra +8
Remnant radio galaxies, whose lobes are no longer replenished by jets from the active galactic nucleus (AGN), offer key constraints on AGN duty cycles and the timescales of radio j…
Tracing AGN-Galaxy Co-Evolution with UV Line-Selected Obscured AGN
Luigi Barchiesi, Lucia Marchetti, Mattia Vaccari +11
Understanding black hole-galaxy co-evolution and the role of AGN feedback requires complete AGN samples, including heavily obscured systems. In this work, we present the first UV l…
Intra-night optical variability and radio characteristics of extremely radio-loud narrow-line Seyfert 1 galaxies
Veeresh Singh, Parveen Kumar, Avik Kumar Das +1
Narrow-line Seyfert 1 galaxies (NLS1s) are generally known to be radio-quiet Active Galactic Nuclei (AGN), but a tiny subset of them are found to be extremely radio-loud with radio…
X-ray spectral properties of dust-obscured galaxies in the XMM-SERVS coverage of the XMM-LSS field
Abhijit Kayal, Veeresh Singh
With an aim to unveil the population of obscured AGN hosted in high- dust-obscured galaxies (DOGs), we performed X-ray spectral study of DOGs ( $4.6…
Intra-night optical variability of peculiar narrow-line Seyfert 1 galaxies with enigmatic jet behavior
Vineet Ojha, Veeresh Singh, M. Berton +1
Variability studies of active galactic nuclei are a powerful diagnostic tool in understanding the physical processes occurring in disk-jet regions, unresolved by direct imaging wit…
Multi-epoch hard X-ray view of Compton-thick AGN Circinus Galaxy
Abhijit Kayal, Veeresh Singh, Claudio Ricci +4
The circumnuclear material around Active Galactic Nuclei (AGN) is one of the essential components of the obscuration-based unification model. However, our understanding of the circ…
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…
Search and characterization of remnant radio galaxies in the XMMLSS deep field
Sushant Dutta, Veeresh Singh, C. H. Ishwara Chandra +3
The remnant phase of a radio galaxy is characterized by the cessation of AGN activity resulting in the stoppage of jets supplying plasma to radio lobes. In this paper, we present t…
Characteristics of remnant radio galaxies detected in the deep radio continuum observations from the SKA pathfinders
Sushant Dutta, Veeresh Singh, C. H. Ishwara Chandra +2
The cessation of AGN activity in radio galaxies leads to a remnant phase during which jets are no longer sustained, but lobes can be detected for a period of time before they fade…
Detection of radio-AGN in dust-obscured galaxies using deep uGMRT radio continuum observations
Abhijit Kayal, Veeresh Singh, C. H. Ishwara Chandra +2
Radio observations being insensitive to the dust-obscuration, have been exploited to unveil the population of Active Galactic Nuclei (AGN) residing in galaxies with large dust cont…
Remnant radio galaxy candidates of small angular sizes
Veeresh Singh, Sushant Dutta, Yogesh Wadadekar +1
Remnant radio galaxies (RRGs), characterized by the cessation of AGN activity, represent a short-lived last phase of radio galaxy's life-cycle. Hitherto, searches for RRGs, mainly…
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…
Kpc-scale radio-jets in narrow-line Seyfert 1 galaxies
Veeresh Singh, Hum Chand, C. H. Ishwara-Chandra +1
Narrow-Line Seyfert 1 galaxies (NLS1s) are generally believed to be radio-quiet Active Galactic Nuclei (AGN) with relatively less-massive (1010~M) Super-Ma…
Investigating kpc-scale radio emission properties of narrow-line Seyfert 1 galaxies
Veeresh Singh, Hum Chand
In recent years, several Radio-Loud Narrow-Line Seyfert 1 galaxies (RL-NLS1) possessing relativistic jets have come into attention with their detections in Very Large Baseline Arra…
On the nature of infrared-faint radio sources in the SXDF and VLA-VVDS fields
Veeresh Singh, Yogesh Wadadekar, C. H. Ishwara-Chandra +4
Infrared-Faint Radio Sources (IFRSs) are an unusual class of objects that are relatively bright at radio wavelengths but have faint or undetected infrared counterparts even in deep…
J1216+0709 : A radio galaxy with three episodes of AGN jet activity
Veeresh Singh, C. H. Ishwara-Chandra, Preeti Kharb +2
We report the discovery of a `Triple-Double Radio Galaxy (TDRG)' J1216+0709 detected in deep low-frequency Giant Metrewave Radio Telescope (GMRT) observations. J1216+0709 is only t…
A GMRT Study of Seyfert Galaxies NGC4235 & NGC4594: Evidence of Episodic Activity ?
P. Kharb, S. Srivastava, V. Singh +3
Low frequency observations at 325 and 610 MHz have been carried out for two "radio-loud" Seyfert galaxies, NGC4235 and NGC4594 (Sombrero galaxy), using the Giant Meterwave Radio Te…
Discovery of rare double-lobe radio galaxies hosted in spiral galaxies
Veeresh Singh, C. H. Ishwara-Chandra, Jonathan Sievers +3
Double-lobe radio galaxies in the local Universe have traditionally been found to be hosted in elliptical or lenticular galaxies. We report the discovery of four spiral-host double…
J021659-044920: a relic giant radio galaxy at z ~ 1.3
Prathamesh Tamhane, Yogesh Wadadekar, Aritra Basu +4
We report the discovery of a relic Giant Radio Galaxy (GRG) J021659-044920 at redshift that exhibits large-scale extended, nearly co-spatial, radio and X-ray emission…
Radio--Far infrared correlation in "blue cloud" galaxies with 0<z<1.2
Aritra Basu, Yogesh Wadadekar, Alexandre Beelen +4
We study the radio--far infrared (FIR) correlation in "blue cloud" galaxies chosen from the PRism MUltiobject Survey (PRIMUS) up to redshift () of 1.2 in the XMM-LSS field. We u…
Kiloparsec-scale radio emission in Seyfert and LINER galaxies
Veeresh Singh, C. H. Ishwara-Chandra, Yogesh Wadadekar +2
Seyfert and LINER galaxies are known to exhibit compact radio emission on 10 to 100 parsec scales, but larger Kiloparsec-Scale Radio structures (KSRs) often remain undetecte…
Multiwavelength characterization of faint Ultra Steep Spectrum radio sources : A search for high-redshift radio galaxies
Veeresh Singh, Alexandre Beelen, Yogesh Wadadekar +9
Ultra Steep Spectrum (USS) radio sources are one of the efficient tracers of powerful High-z Radio Galaxies (HzRGs). In contrast to searches for powerful HzRGs from radio surveys o…
Probing obscured, high redshift galaxies using deep P-band continuum imaging with GMRT
Yogesh Wadadekar, Sandeep Sirothia, C. H. Ishwara-Chandra +3
We have carried out a deep (150 micro Jy rms) P-band, continuum imaging survey of about 40 square degrees of sky in the XMM-LSS, Lockman Hole and ELAIS-N1 fields with the GMRT. Our…
Unveiling the population of high-redshift radio galaxies using centimeter GMRT survey
Veeresh Singh, Alexandre Beelen, Yogesh Wadadekar +5
Ultra Steep Spectrum (USS) radio sources are one of the efficient tracers of High Redshift Radio Galaxies (HzRGs). To search for HzRGs candidates, we investigate properties of a la…