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71 papers
Cosmology with HI
Hamsa Padmanabhan
Hydrogen, the most abundant element in the Universe, has traditionally been used to investigate astrophysical processes within and around our own Galaxy. In its chemically neutral,…
An Independent Measure of the Kinematic Dipole from SDSS
Prabhakar Tiwari, Dominik J. Schwarz, Gong-Bo Zhao +3
We utilize the Sloan Digital Sky Survey (SDSS) extended Baryon Oscillation Spectroscopic Survey (eBOSS) and Baryon Oscillation Spectroscopic Survey (BOSS) catalogs with precise spe…
Intensity mapping of Loeb-Rybicki haloes from scattering of galactic Lyman- emission by the diffuse intergalactic medium before reionization
Hamsa Padmanabhan, Abraham Loeb
We use the inferred evolution of Lyman- luminosities of galaxies in the redshift range of from the James Webb Space Telescope (JWST) data to predict the power spec…
Intergalactic Lyman- haloes before reionization are detectable with JWST
Hamsa Padmanabhan, Abraham Loeb
The recently reported a large population of UV luminous galaxies at high redshifts, , as well as Lyman- emitting (LAE) galax…
Constraints on Supermassive Black Hole Binaries from JWST and NANOGrav
Hamsa Padmanabhan, Abraham Loeb
We use the recent statistics of dual active galactic nuclei (AGN) in the (JWST) data at to address two aspects of the feedback and e…
Constraining the AGN luminosity function from JWST with the X-ray Background
Hamsa Padmanabhan, Abraham Loeb
We predict the X-ray background (XRB) expected from the population of quasars detected by the JWST spectroscopic surveys over the redshift range . We find that the meas…