230 citations · 1.2k across the 28 of their papers we have counts for
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The HI column density distribution function in faint dwarf galaxies
Narendra Nath Patra, Jayaram N. Chengalur, Ayesha Begum
We present the HI column density distribution function,\fnh, as measured from dwarf galaxies observed as part of the Faint Irregular Galaxy GMRT (FIGGS) survey. We find that the sh…
Discovery of an extremely gas-rich dwarf triplet near the center of the Lynx-Cancer void
Jayaram N. Chengalur, S. A. Pustilnik
Giant Metrewave Radio Telescope (GMRT) HI observations, done as part of an ongoing study of dwarf galaxies in the Lynx-Cancer void, resulted in the discovery of a triplet of extrem…
Pre-existing dwarfs, tidal knots and a tidal dwarf galaxy: an unbiased HI study of the gas-rich interacting galaxy group NGC 3166/9
Karen Lee-Waddell, Kristine Spekkens, Martha P. Haynes +4
We present Arecibo Legacy Fast ALFA (ALFALFA) and follow-up Giant Metrewave Radio Telescope (GMRT) HI observations of the gas-rich interacting group NGC 3166/9. The sensitive ALFAL…
Probing interstellar turbulence in spiral galaxies using HI power spectrum analysis
Prasun Dutta, Ayesha Begum, Somnath Bharadwaj +1
We estimate the \HI intensity fluctuation power spectrum for a sample of 18 spiral galaxies chosen from THINGS. Our analysis spans a large range of length-scales from $\sim 300 {\r…
Characterizing Foreground for redshifted 21-cm radiation: 150 MHz GMRT observations
Abhik Ghosh, Jayanti Prasad, Somnath Bharadwaj +2
Foreground removal is a major challenge for detecting the redshifted 21-cm neutral hydrogen (HI) signal from the Epoch of Reionization (EoR). We have used 150 MHz GMRT observations…