5.4k citations
- Tata Institute of Fundamental ResearchIN697 papers
- Inter-University Centre for Astronomy and AstrophysicsIN178 papers
- National Radio Astronomy ObservatoryUS154 papers
- Commonwealth Scientific and Industrial Research OrganisationAU147 papers
- Raman Research InstituteIN128 papers
- International Centre for Radio Astronomy ResearchAU122 papers
- Netherlands Institute for Radio AstronomyNL115 papers
- Center for Astrophysics Harvard & SmithsonianUS111 papers
- Curtin UniversityAU109 papers
- Max Planck Institute for Radio AstronomyDE107 papers
- Centre National de la Recherche ScientifiqueFR105 papers
- University of ManchesterGB100 papers
12 papers · 2 filters
Constraints on changes in the proton-electron mass ratio using methanol lines
N. Kanekar, W. Ubachs, K. M. Menten +6
We report Karl G. Jansky Very Large Array (VLA) absorption spectroscopy in four methanol (CHOH) lines in the gravitational lens towards PKS1830-211. Three of the…
Lyman-alpha emitters gone missing: evidence for late reionization?
Tirthankar Roy Choudhury, Ewald Puchwein, Martin G. Haehnelt +1
We combine high resolution hydrodynamical simulations with an intermediate resolution, dark matter only simulation and an analytical model for the growth of ionized regions to esti…
Reionization constraints on primordial magnetic fields
Kanhaiya L. Pandey, T. Roy Choudhury, Shiv K. Sethi +1
We study the impact of the extra density fluctuations induced by primordial magnetic fields on the reionization history in the redshift range: . We perform a comprehens…
Theoretical and observational constraints on the HI intensity power spectrum
Hamsa Padmanabhan, T. Roy Choudhury, Alexandre Refregier
Mapping of the neutral hydrogen (HI) 21-cm intensity fluctuations across redshifts promises a novel and powerful probe of cosmology. The neutral hydrogen gas mass density, $Ω_{\rm…
21 cm signal from cosmic dawn: Imprints of spin temperature fluctuations and peculiar velocities
Raghunath Ghara, T. Roy Choudhury, Kanan K. Datta
The 21 cm brightness temperature fluctuations from reionization promise to provide information on the physical processes during that epoch. We present a formalism for…
A distant radio mini-halo in the Phoenix galaxy cluster
R. J. van Weeren, H. T. Intema, D. V. Lal +9
We report the discovery of extended radio emission in the Phoenix cluster (SPT-CL J2344-4243, z=0.596) with the GMRT at 610 MHz. The diffuse emission extends over a region of at le…