211 citations · 973 across the 34 of their papers we have counts for
35 papers
Multiple H I 21-cm absorbers towards blazar PKS 1158+007
Abhisek Mohapatra, R. Srianand, R. Dutta
We report an interesting line of sight towards the blazar PKS 1158+007 (J1201+0028) ( = 1.369), revealing the rare detection of two intervening HI 21-cm absorption syst…
Cosmic Chance Superpositions: Largest Catalog of Quasar-Galaxy Pairs at a Projected Separation of kpc
Labanya Kumar Guha, Raghunathan Srianand, Rajeshwari Dutta
We present the largest catalogue to date of Galaxies On Top Of Quasars (GOTOQs), systems where the sightline to a background quasar passes directly through or very close to a foreg…
HI 21-cm Absorption Associated with Foreground Galaxies on Top of Quasars
Labanya Kumar Guha, Raghunathan Srianand, Rajeshwari Dutta
A systematic search for HI 21-cm absorption in Quasar-Galaxy Pairs (QGPs) provides a powerful means to map the distribution of cold gas around high-redshift star-forming galaxies.…
Probing coherence in metal absorption towards multiple images of strong gravitationally lensed quasars
Rajeshwari Dutta, Ana Acebron, Michele Fumagalli +3
We present a tomographic analysis of metal absorption lines arising from the circumgalactic medium (CGM) of galaxies at z~0.5-2, using Multi Unit Spectroscopic Explorer (MUSE) obse…
Quasar Sightline and Galaxy Evolution (QSAGE) -- III. The mass-metallicity and fundamental metallicity relation of 2.2 galaxies
H. M. O. Stephenson, J. P. Stott, F. Cullen +8
We present analysis of the mass-metallicity relation (MZR) for a sample of 67 [OIII]-selected star-forming galaxies at a redshift range of ()…
Metal line emission from galaxy haloes at z~1
Rajeshwari Dutta, Matteo Fossati, Michele Fumagalli +12
We present a study of the metal-enriched halo gas, traced using MgII and [OII] emission lines, in two large, blind galaxy surveys - the MUSE (Multi Unit Spectroscopic Explorer) Ana…
The MUSE Ultra Deep Field (MUDF). III. Hubble Space Telescope WFC3 Grism Spectroscopy and Imaging
Mitchell Revalski, Marc Rafelski, Michele Fumagalli +18
We present extremely deep Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) observations of the MUSE Ultra Deep Field (MUDF). This unique region of the sky contains two quasa…
MUSE Analysis of Gas around Galaxies (MAGG) -- V: Linking ionized gas traced by CIV and SiIV absorbers to Ly emitting galaxies at
Marta Galbiati, Michele Fumagalli, Matteo Fossati +5
We use 28 quasar fields with high-resolution (HIRES and UVES) spectroscopy from the MUSE Analysis of Gas Around Galaxies survey to study the connection between Ly emitters (LAEs…
The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation
Shoko Jin, Scott C. Trager, Gavin B. Dalton +212
WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, will see first light in late 2022. WEAVE comprises a new 2-degree…
MUSE Analysis of Gas around Galaxies (MAGG) -- IV: The gaseous environment of 3-4 Lyman-alpha emitting galaxies
Emma K. Lofthouse, Michele Fumagalli, Matteo Fossati +9
We study the link between galaxies and HI-selected absorption systems at z~3-4 in the MUSE Analysis of Gas around Galaxies (MAGG) survey, an ESO large programme consisting of integ…
Probing galaxy evolution through HI 21-cm emission and absorption: current status and prospects with the Square Kilometre Array
Rajeshwari Dutta, Sushma Kurapati, J. N. H. S. Aditya +8
One of the major science goals of the Square Kilometre Array (SKA) is to understand the role played by atomic hydrogen (HI) gas in the evolution of galaxies throughout cosmic time.…
HI 21-cm absorption in radio-loud AGN with double-peaked [OIII] emission
Rajeshwari Dutta, Raghunathan Srianand
Different physical processes in galaxy evolution, such as galaxy mergers that lead to coalescence of dual Active Galactic Nuclei (AGN) and outflows emanating from the narrow line r…
Constraining the Size of the Circumgalactic Medium Using the Transverse Autocorrelation Function of C IV Absorbers in Paired Quasar Spectra
Abby Mintz, Marc Rafelski, Regina A. Jorgenson +6
The circumgalactic medium (CGM) plays a vital role in the formation and evolution of galaxies, acting as a lifeline between galaxies and the surrounding intergalactic medium (IGM).…
Host Galaxies of Ultra Strong Mg II absorbers at z 0.5
Labanya Kumar Guha, Raghunathan Srianand, Rajeshwari Dutta +3
From a sample of 109 candidate Ultra-Strong Mg II (USMgII; having rest equivalent width of Mg II absorption, Angstrom) systems at z=0.4-0.6, we confirm 27 and identi…
Metal-enriched halo gas across galaxy overdensities over the last 10 billion years
Rajeshwari Dutta, Michele Fumagalli, Matteo Fossati +15
We present a study of metal-enriched halo gas traced by MgII and CIV absorption at z<2 in the MUSE Analysis of Gas around Galaxies survey and the Quasar Sightline and Galaxy Evolut…
MALS SALT-NOT survey of MIR-selected powerful radio-bright AGN at 0<z<3.5
N. Gupta, G. Shukla, R. Srianand +20
We present results of an optical spectroscopic survey using SALT and NOT to build a WISE mid-infrared color-based, dust-unbiased sample of powerful radio-bright (200 mJy at 1.4…
MUSE Analysis of Gas around Galaxies (MAGG) -- III: The gas and galaxy environment of z = 3-4.5 quasars
Matteo Fossati, Michele Fumagalli, Emma K. Lofthouse +9
We present a study of the environment of 27 z=3-4.5 bright quasars from the MUSE Analysis of Gas around Galaxies (MAGG) survey. With medium-depth MUSE observations (4 hours on targ…
Evolution of cold gas at 2<z<5: a blind search for HI and OH absorption lines towards mid-infrared color selected radio-loud AGNs
N. Gupta, R. Srianand, G. Shukla +9
We present results from a spectroscopically blind search for associated and intervening HI 21-cm and OH 18-cm absorption lines towards 88 AGNs at using the upgraded Gi…
PKS1830-211: OH and HI at z=0.89 and the first MeerKAT UHF spectrum
F. Combes, N. Gupta, S. Muller +20
The Large Survey Project (LSP) "MeerKAT Absorption Line Survey" (MALS) is a blind HI 21-cm and OH 18-cm absorption line survey in the L- and UHF-bands, with the primary goal to bet…
MUSE Analysis of Gas around Galaxies (MAGG) -- II: Metal-enriched halo gas around z~1 galaxies
Rajeshwari Dutta, Michele Fumagalli, Matteo Fossati +8
We present a study of the metal-enriched cool halo gas traced by MgII absorption around 228 galaxies at z~0.8-1.5 within 28 quasar fields from the MUSE Analysis of Gas around Galax…
Blind HI and OH absorption line search: first results with MALS and uGMRT processed using ARTIP
N. Gupta, P. Jagannathan, R. Srianand +32
We present details of the Automated Radio Telescope Imaging Pipeline (ARTIP) and results of a sensitive blind search for HI and OH absorbers at and , respectively. A…
ALMACAL VII: First Interferometric Number Counts at 650 m
A. Klitsch, M. A. Zwaan, Ian Smail +10
Measurements of the cosmic far-infrared background (CIB) indicate that emission from many extragalactic phenomena, including star formation and black hole accretion, in the Univers…
uGMRT search for cold gas at z~1-1.4 towards red quasars
Rajeshwari Dutta, Raghunathan Srianand, Neeraj Gupta +1
We present results from our search for HI 21-cm and OH 18-cm absorption at z~1-1.4 towards red quasars showing strong MgII absorption using uGMRT. The quasars J1501+1822 and J1521+…
Cold neutral hydrogen gas in galaxies
Rajeshwari Dutta
This review summarizes recent studies of the cold neutral hydrogen gas associated with galaxies probed via the HI 21-cm absorption line. HI 21-cm absorption against background radi…