140 citations · 3.7k across the 109 of their papers we have counts for
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Do the fundamental constants change with time ?
Nissim Kanekar
Comparisons between the redshifts of spectral lines from cosmologically-distant galaxies can be used to probe temporal changes in low-energy fundamental constants like the fine str…
A search for damped Lyman-alpha systems towards radio-loud quasars I: The optical survey
Sara L. Ellison, Brian A. York, Max Pettini +1
We present the results from the optical component of a survey for damped Lyman-alpha systems (DLAs) towards radio-loud quasars. Our quasar sample is drawn from the Texas radio surv…
Outflowing atomic and molecular gas at towards 1504+377
Nissim Kanekar, Jayaram N. Chengalur
We report the detection of OH 1667 MHz and wide HI 21cm absorption at towards the red quasar 1504+377, with the Green Bank Telescope and the Giant Metrewave Radio Tel…
Discovery of 21cm absorption in a DLA towards TXS 0311+430: The first low spin temperature absorber at z > 1
Brian A. York, Nissim Kanekar, Sara L. Ellison +1
We report the detection of HI 21 cm absorption from the damped Lyman- system (DLA) towards TXS 0311+430, with the Green Bank Telescope. The 21 cm absorption has a velo…
HI 21cm absorption at towards PKS 0201+113
N. Kanekar, J. N. Chengalur, W. M. Lane
We report the GMRT detection of HI 21cm absorption from the damped Lyman- absorber (DLA) towards PKS 0201+113, the highest redshift at which 21cm absorption has be…
Properties of the thinnest cold HI clouds in the diffuse interstellar medium
Snezana Stanimirovic, Carl Heiles, Nissim Kanekar
We have obtained deep HI observations in the direction of 22 continuum sources without previously detected cold neutral medium (CNM). 18 CNM clouds were detected with the typical H…