247 citations · 415 across the 8 of their papers we have counts for
8 papers
Enhanced global signal of neutral hydrogen due to excess radiation at cosmic dawn
Chang Feng, Gilbert Holder
We revisit the global 21cm signal calculation incorporating a possible radio background at early times, and find that the global 21cm signal shows a much stronger absorption featur…
Detecting Electron Density Fluctuations from Cosmic Microwave Background Polarization using a Bispectrum Approach
Chang Feng, Gilbert Holder
Recent progress in high sensitivity Cosmic Microwave Background (CMB) polarization experiments opens up a window on large scale structure (LSS), as CMB polarization fluctuations on…
Current and Future Constraints on Primordial Magnetic Fields
Dylan R. Sutton, Chang Feng, Christian L. Reichardt
We present new limits on the amplitude of potential primordial magnetic fields (PMFs) using temperature and polarization measurements of the cosmic microwave background (CMB) from…
A Halo Model Approach to the and Cross-correlation
Chang Feng, Asantha Cooray, Brian Keating
We present a halo-model-based approach to calculate the cross-correlation between HI intensity fluctuations and emitters (LAE) during the epoch of reioniza…
Probing the Intergalactic Medium with Ly and 21 cm Fluctuations
Caroline Heneka, Asantha Cooray, Chang Feng
We study 21cm and Ly fluctuations, as well as H, while distinguishing between Ly emission of galactic, diffuse, and scattered intergalactic medium (IG…
Planck Lensing and Cosmic Infrared Background Cross-Correlation with Fermi-LAT: Tracing Dark Matter Signals in the Gamma-Ray Background
Chang Feng, Asantha Cooray, Brian Keating
The extragalactic -ray background and its spatial anisotropy could potentially contain a signature of dark matter (DM) annihilation or particle decay. Astrophysical foregrounds,…
Modeling atmospheric emission for CMB ground-based observations
J. Errard, P. A. R. Ade, Y. Akiba +72
Atmosphere is one of the most important noise sources for ground-based cosmic microwave background (CMB) experiments. By increasing optical loading on the detectors, it amplifies t…
Reconstruction of Gravitational Lensing Using WMAP 7-Year Data
Chang Feng, Brian Keating, Hans P. Paar +1
Gravitational lensing by large scale structure introduces non-Gaussianity into the Cosmic Microwave Background and imprints a new observable, which can be used as a cosmological pr…